Journal articles: 'Slurry mortar'

1

Megna, Bartolomeo, Dionisio Badagliacco, Carmelo Sanfilippo, and Antonino Valenza. "Physical and Mechanical Properties of Sustainable Hydraulic Mortar Based on Marble Slurry with Waste Glass." Recycling 6, no. 2 (June 9, 2021): 37. http://dx.doi.org/10.3390/recycling6020037.

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This paper aims to propose and characterize a sustainable hydraulic mortar entirely obtained by the reuse of waste materials, with marble slurry coming from quarries in the north-western Sicily and glass powder coming from a waste collection plant in Marsala (Province of Trapani). The first was used as raw material to produce the mortar binder by a kilning and slaking process, while the second was used as a pozzolanic additive. The chemical and morphological characterization of the marble slurry was done by XRD, FTIR, STA and SEM analyses. Glass powder was analyzed through particle size distribution measurements, XRD and standard pozzolanic tests. Hydraulic mortars constituted by slaked lime from kilned marble slurry and waste glass powder (LGS) were prepared beside commercial Natural Hydraulic Lime (NHL) based mortars (NGS) and air-hardening lime (LSS)-based mortars. Mechanical and absorption properties of the mortars were investigated as a function of the grain size of the glass powder by means of three-point bending and compressive strength tests, capillary uptake, helium pycnometry and simultaneous thermal analysis. The results demonstrated that the formulation LGS exhibits significantly improved mechanical and absorption properties compared to air-hardening mortars (LSS). It confirms the possibility of producing a more sustainable hydraulic mortar exclusively from waste materials for civil engineering.

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Mirza, J., S. Turenne, and J. Masounave. "Influence of structural parameters on abrasion-erosion resistance of various repairing mortars." Canadian Journal of Civil Engineering 17, no. 1 (February 1, 1990): 12–18. http://dx.doi.org/10.1139/l90-003.

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Slurry erosion tests were performed on various types of repairing mortars in order to determine the factors influencing the abrasion-erosion resistance of some mortars. An in-house built apparatus was used, which produced a slurry jet that impinged the surface of mortar specimens with an incidence angle of 45° and a velocity of 18.5 m/s. The results showed that the epoxy mortars were the most erosion resistant compared with cementitious grouts and polymer-modified cement-based mortars. The erosion of mortars is controlled by the wear of the binder (epoxy or cement paste), and a strong relation exists between the erosion resistance of the mortar and the absence of microporosity in the binder. The results also suggest that to minimize the exposed areas of the binder, well-graded, i.e., small- and large-size, sand particles should be used. Key words: abrasion, erosion, repair mortars, cementitious grouts, polymer-modified cement-based mortars, epoxy mortars, hydraulic structures.

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Geng, Hai Ning, Na An, Rui Fang, and Qiu Li. "The Restoration of Compressive Strength of Self-Healing Mortar." Key Engineering Materials 726 (January 2017): 500–504. http://dx.doi.org/10.4028/www.scientific.net/kem.726.500.

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Self-healing mortar with various healing agent was prepared by sealing the healing agent in glass capsules. Waterglass, metakaolin slurry, and metakaolin slurry and waterglass were used as healing agent. The restoration of compressive strength of self-healing mortar was characterized by damaging the mortar at 7 and 28 days and curing for another 1, 7 and 28 days. The compressive strength of mortar with healing agent of waterglass was restored after curing for another 7 days under the condition of damaging at 7 or 28 days, and developed with a similar trend to that of the control specimen when damaged at 7 days but was not fully restored in the long term when damaged at 28 days. The compressive strength of mortar with healing agent of metakaolin or metakaolin and waterglass was restored after curing for another 7 days when damaged at 7 or 28 days, and developed with a similar trend to that of the control specimen in the long term under the condition of damaging at 7 or 28 days. Metakaolin slurry can restore the compressive strength of mortar at both early and later age damage. The combination of metakaolin and waterglass restored and further improved the compressive strength of self-healing mortar.

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Li, Zi Hong, Jia Jian Chen, Yong Xia, and An Min Ma. "Effect of Polishing Brick Powder on Mortar Sorptivity and its Mechanism." Materials Science Forum 984 (April 2020): 219–23. http://dx.doi.org/10.4028/www.scientific.net/msf.984.219.

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In this study, the effect of polishing brick powder replacement cement slurry method on water absorption of motar is discussed. A series of mortar samples are prepared for testing water penetration amount at unit surface area with square of time and permeable porosity. The results show that the replacement of cement slurry with polished brick powder will increase the permeable pore of mortar and increase the sorptivity per unit area, thus effectively reducing the sorptivity of mortar at the same water cement ratio or strength.

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Li, Yue, and Ping Wang. "Effect of Emulsified Asphalt Content on Mechanical Property of Cement and Emulsified Asphalt Mortar." Applied Mechanics and Materials 587-589 (July 2014): 1132–36. http://dx.doi.org/10.4028/www.scientific.net/amm.587-589.1132.

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Uniaxial compression and bending test of CA mortar, which have six different dosage of emulsified asphalt and the same dry material, is carried out with a electronic universal test machine. It turns out that: when the dosage of emulsified asphalt is lacked, the CA mortar cannot be uniform and stable slurry system; within the range of 300~680 mL emulsified asphalt, slurry state of mortar is good, no separation, and have good liquidity, in this range, with the increasing dosage of emulsified asphalt, compressive strength, elastic modulus and peak strain are gradually reduced, while ratio of bending strength to compressive strength rise at the beginning, then decline within a narrow range; The 1st and 2nd slurry is not stable, they appear separation and the surfaced asphalt, which have similar appearance and mechanical properties to cement mortar, and the last four groups of test results have great difference from the former two groups.

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Zhang, Jun Hua, Kai Yuan, Zhong He Shui, and Yi Yu Wang. "Effect on Structure and Properties of Cement-Based Materials by Polymer-Modified Metakaolin Slurry." Materials Science Forum 913 (February 2018): 1097–103. http://dx.doi.org/10.4028/www.scientific.net/msf.913.1097.

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It is not easy to disperse metakaolin in the cement concrete uniformly. The reunite phenomenon caused by lamellar structure and fine particles can reduce the properties of concrete. The fluidity of mortar were studied by recombining polyethylene glycol (PEG), sodium methyl-dinaphthalene sulfonate (NNO) and hydroxyethyl cellulose (HEC) with the metakaolin slurry, and then the internal structural properties of the different cement-based materials were analysed. The experimental results showed that when the ratio of MK and H2O was 35 : 65, the metakaolin slurry could reduce the adverse effect of metakaolin on the fluidity of mortar to a certain extent. The slurry prepared by P1N2H2, P2N1H2 and P2N1H1 composite dispersant dispersed more uniformly in the mortar than other groups. The hydration caused by these types of slurry during cement formation consumed Ca(OH)2 crystals sufficiently, which led to generating more dense C-S-H gel structure in the final cement-based materials.

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Al-Akhras, Nabil M., Ayman Ababneh, and Wail A. Alaraji. "Using burnt stone slurry in mortar mixes." Construction and Building Materials 24, no. 12 (December 2010): 2658–63. http://dx.doi.org/10.1016/j.conbuildmat.2010.04.058.

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8

Khan, Mohammad Adeel, Bazid Khan, Khan Shahzada, Sajjad Wali Khan, Nauman Wahab, and Muhammad Imran Ahmad. "Conversion of Waste Marble Powder into a Binding Material." Civil Engineering Journal 6, no. 3 (March 1, 2020): 431–45. http://dx.doi.org/10.28991/cej-2020-03091481.

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In the marble industry, a lot of marble is wasted in the form of odd blocks of various sizes and slurry consisting of water and micro-fine particles. The slurry on drying converts into powder. Both slurry and powder have adverse effects on the environment. This research is focused on the gainful utilization of waste marble powder (WMP) by converting it into a valuable binding material. For this purpose, WMP and clay were collected, and their physical and chemical properties were determined. A mix of WMP and clay was prepared and burnt at a temperature around 1300 oC. The burnt mix was ground to powder form to get marble cement (MC). The MC was then used in mortar. The compressive and flexural strengths of mortar cubes and prisms were determined. Apart from this, X-ray diffraction (XRD) analysis, thermo-gravimetric analysis (TGA) and scanning electron microscopic (SEM) analysis were also carried out. The chemical composition showed that the MC has 52.5% di-calcium silicate (C2S) and 3.5% tri-calcium silicate (C3S).The compressive strength of MC mortar after 28 days curing is 6.03 MPa, which is higher than M1 mortar of building code of Pakistan (5 MPa). The compressive strength of MC mortar after one year is 20.67 MPa, which is only 17% less than OPC mortar.

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9

Jiang, Gui Hui, and Yu Qing Li. "The Experimental Study of Filling Mortar and Stones Construction Technology." Applied Mechanics and Materials 744-746 (March 2015): 665–72. http://dx.doi.org/10.4028/www.scientific.net/amm.744-746.665.

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Filling mortar construction techniques of stone masonry is a innovation and improvement on construction technology. It uses the pressure of water slurry washed sand, relying on the impact and gravity filling the small gap of the mortar and stones. which a has good surface to form the stone body. Test by adjusting the amount of mixing on cement mortar and water, the ratio of water-cement and sand-lime on mortar study compared the performance impact on the mortar, initially identified the ratio on technical requirements of construction which mixing the mortar. On the basis of this test proposed the method using mortar, designed to verifies on using the mortar to fill the small gap, and to determine the optimal mixing on mortar for this new construction technology foundation.

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10

XU, Ganggang, Xiaodong WANG, and Hai WANG. "Experimental Study on Sulfate Attack Resistance of Cement Slurry with UEA Expansive Agent." E3S Web of Conferences 136 (2019): 03012. http://dx.doi.org/10.1051/e3sconf/201913603012.

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Sulfate attack was one of the most important factors affecting the durability of cement slurry in mine corrosive environment. For water stopping and reinforcement projects in wellbore or working face under sulfate erosion environment, mineral admixtures were often used to improve the sulfate resistance of cement slurry. The physical and mechanical properties of cement mortar with 0, 4%, 8%, 12% and 16% UEA expansive agent content under the conditions of 0.6%, 3% and 15% sodium sulfate solution concentration were investigated through the full immersion test for 19 months in the laboratory. The results showed that the strength of mortar specimens decreased with the increase of UEA expansive agent content, but in the sulfate attack environment, the ability to resist sulfate attack could be significantly improved. In order to ensure the early strength of mortar and reduce the cost, the best effect of UEA expansion agent was 4%.

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11

Huang, Da Wei, Ren Juan Sun, Shan Shan Wei, Yi Zhang Hu, Yuan Yuan Wang, and Zhi Ge. "Influence of Additives to Cement Slurry Rheological Property." Applied Mechanics and Materials 651-653 (September 2014): 165–68. http://dx.doi.org/10.4028/www.scientific.net/amm.651-653.165.

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Adding different kinds of additives will change rheological properties of cement slurry, same to the concrete. The relationship between fluid shear stress (Γ) and the shear rate (Ds) called rheological properties. In this paper we studied the influence of different additives (Olyacryamide, polycarboxylate superplasticizer , nanoCaCO3) on the slurry rheological properties and the effects of polyacrylamide on cement mortar liquidity.

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12

Kazimov, Sh P., and K. K. Mehdiyev. "Acid-based cement slurry with controllable properties." SOCAR Proceedings, no. 3 (September 30, 2020): 47–51. http://dx.doi.org/10.5510/ogp20200300444.

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Intensive occurrence of sand related problems in wells diminishes oil flow rate and leads to heavy expenses on production and equipment maintenance. Hard geological factors on field bedding, heterogeneity of reservoir porosity and permeability, strict constraints on physicochemical property of oil and produced water restrict the efficient application of several available methods and technologies for sand control. The increasing densification of sand related problems at late stages of development gives rise to implementation of different type of workover. There exist several backfilling compositions with a number of draw-backs to control sand influx from the reservoir into the well. With the purpose to work out more effective technology to ensure the consolidation of reservoir there was developed a new grouting mortar. This slurry contains cement, hydrated aluminum silicate and 7-8% hydrochloric acid solution. Barrier of grouting mortar has high resistance and adhesive characteristics and penetrates much deeper into pores increasing consolidation efficiency.

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13

D, Elavarasi, Saravana Raja Mohan K, Navatejareddy A, and Sushmitha R. "Effect of Fibre Content on Mechanical Behavior of Slurry Infiltrated Fibrous Concrete." International Journal of Engineering & Technology 7, no. 3.12 (July 20, 2018): 260. http://dx.doi.org/10.14419/ijet.v7i3.12.16037.

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Cement mortar or slurry is an essential material for production of Slurry Infiltrated Fibrous Concrete (SIFCON) structural components. However, there have been limited technical data available for deciding a suitable mix proportions and water cement ratio. For achieving a good quality of mortar mix or slurry with specific strength requirement and satisfactory level of workability for proper infiltration ability of cement slurry fibrebed. The preliminary study was carried out to select suitable mix and W/C from various mixes (1:1, 1:1.5 &1:2) and W/C (0.4, 0.45 & 0.5)on fresh and hardened properties of cement mortar. The optimum mix proportion and water cement ratio were obtained on workability (flow table test) and compressive strength of cement mortar are found to be as 1:1 and 0.40 respectively for fabrication of SIFCON. The main focus of this investigation on the behaviour of SIFCON contains various volume fraction of fibre content with an optimum mix(1:1) and W/C (0.4) under static loading. Hooked end steel fiber length of 30mm and tensile strength of 1050MPais used throughout the entire investigations. Cubes of 100 x 100 x 100mm for compressive strength and cylinders of 100mm diameter and 200mm height for split tensile strength were cast and tested at 3, 7 and 28 days. For flexural strength, three SIFCON beams of length 1200mm and cross section of 100mmx 200mm were cast and tested at 28 days under three point bending. The parameters like fracture energy, load deflection response, split tensile strength and compressive strength were found and compared the results with conventional mix. The test results observed that the strength performances were greatly improved due to addition of fibre by volume fraction in SIFCON matrix. Also developed the regression model from the experimental results to estimate the compressive and split tensile strength and compared the predicted values with the experimental values.

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14

Chaney, RC, KR Demars, A. Ata, and M. O'Neill. "The Physicochemical Interaction Between PHPA Polymer Slurry and Cement Mortar." Geotechnical Testing Journal 23, no. 2 (2000): 225. http://dx.doi.org/10.1520/gtj11047j.

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15

Wei, Hanbo, Bolin Xiao, and Qian Gao. "Flow Properties Analysis and Identification of a Fly Ash-Waste Rock Mixed Backfilling Slurry." Minerals 11, no. 6 (May 28, 2021): 576. http://dx.doi.org/10.3390/min11060576.

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The use of waste rock as an aggregate in mining backfill is environmentally friendly and cost-saving. The backfill slurry flow property varies with the change in aggregate, binder content, solid concentration, and additives. The slurry flow in a pipeline is governed by its properties, which makes it crucial to study the flow properties and their effects. One example is a fly ash-waste rock mixed slurry in Jinchuan Nickel, China. Tests on the slump, slump flow, mortar consistency, layering degree, and bleeding rate are performed to reveal the effects of the slurry concentration, binder content, and fly ash addition on the flow properties. Those relations are analyzed, and two new indices are derived (F1 and F2) using the principal component analysis method. Finally, the application results show that F1 > 0 indicates a nonhomogeneous flow; F1 < 0 and F2 > 0 indicates a high-density slurry flow; F1 < 0 and F2 < 0 indicates a paste slurry flow.

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16

Han, Suqin, Xiuyong Ni, and Ruimin Huang. "Study on Quality Control of Concrete Raw Materials in Road and Bridge Construction." Frontiers Research of Architecture and Engineering 4, no. 1 (May 19, 2021): 22. http://dx.doi.org/10.30564/frae.v4i1.3118.

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The main material of concrete is a construction building material composed of water and mineral mixture and cement and chemical additives in the corresponding proportion and below the standard. In the process of making concrete material, slurry and cement are needed to mix, then cement slurry and sand are mixed into mortar according to the corresponding proportion, and aggregate is added to mortar to form concrete building material. In the process of concrete preparation, the most important construction link is mixing, which needs to be fully stirred to make the performance of concrete meet the construction needs. In the process of concrete construction technology development, both mix ratio and production technology have become more and more mature, but there are still some problems, which have an impact on the quality of concrete. Therefore, this paper discusses the quality control of concrete raw materials according to the construction process of road and bridge.

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17

Li, Wei, Ying Li, and Hai Ying Zhang. "Development of Performance Optimization of Recycled Aggregate." Advanced Materials Research 811 (September 2013): 254–57. http://dx.doi.org/10.4028/www.scientific.net/amr.811.254.

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Recycled aggregate concrete (RAC) differ from natural aggregate concrete in mechanical and durability properties. The poorer qualities of recycled aggregate (RA) limit utilization of RAC in engineering. Cement mortar attached on the surface of recycled aggregate result in higher water absorption rate. Also, interfacial zone between recycled aggregate and new mortar consist of loose and porous hydrates. Investigation is devoted to effects of different approaches on improving performance of RA to compensate the lower quality of RA. The pre-soaking treatment approach reduces the old cement mortar and removes the weaker link in interfacial zone. Moreover, The two-stage mixing approach (TSMA) is adopted, leads to the formation of a thin layer of cement slurry on the surface of RA which permeates into the porous old cement mortar, filling up the old cracks and voids for increasing compressive strength. Correlations in methods have been obtained and discussed.

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SASAOKA, Takashi, Hideki SHIMADA, Shiro KUBOTA, and Kikuo MATSUI. "Properties of Mud Slurry and Mortar Injection in Using Pipe Jacking." Shigen-to-Sozai 117, no. 3 (2001): 195–201. http://dx.doi.org/10.2473/shigentosozai.117.195.

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19

Chouhan, Harshwardhan Singh, Pawan Kalla, and RavindraNagar. "Evaluation of Mechanical Properties of Cement Mortar Containing Kotastone Slurry Waste." Advanced Science, Engineering and Medicine 11, no. 1 (January 1, 2019): 66–68. http://dx.doi.org/10.1166/asem.2019.2315.

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20

Ying, Jingwei, Zewen Han, Luming Shen, and Wengui Li. "Influence of Parent Concrete Properties on Compressive Strength and Chloride Diffusion Coefficient of Concrete with Strengthened Recycled Aggregates." Materials 13, no. 20 (October 16, 2020): 4631. http://dx.doi.org/10.3390/ma13204631.

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Parent concrete coming from a wide range of sources can result in considerable differences in the properties of recycled coarse aggregate (RCA). In this study, the RCAs were obtained by crushing the parent concrete with water-to-cement ratios (W/Cparent) of 0.4, 0.5 and 0.6, respectively, and were strengthened by carbonation and nano-silica slurry wrapping methods. It was found that when W/Cparen was 0.3, 0.4 and 0.5, respectively, compared with the mortar in the untreated RCA, the capillary porosity of the mortar in the carbonated RCA decreased by 19%, 16% and 30%, respectively; the compressive strength of concrete containing the carbonated RCA increased by 13%, 11% and 13%, respectively; the chloride diffusion coefficient of RAC (DRAC) containing the nano-SiO2 slurry-treated RCA decreased by 17%, 16% and 11%; and that of RAC containing the carbonated RCA decreased by 21%, 25% and 26%, respectively. Regardless of being strengthened or not, both DRAC and porosity of old mortar in RCAs increased with increasing W/Cparent. For different types of RCAs, DRAC increased obviously with increasing water absorption of RCA. Finally, a theoretical model of DRAC considering the water absorption of RCA was established and verified by experiments, which can be used to predict the DRAC under the influence of different factors, especially the water absorption of RCA.

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21

Tandon, Raghav, Sanjeev Maharjan, and Suraj Gautam. "Shear and tensile bond strengths of autoclaved aerated concrete (AAC) masonry with different mortar mixtures and thicknesses." Journal of Engineering Issues and Solutions 1, no. 1 (May 1, 2021): 20–31. http://dx.doi.org/10.3126/joeis.v1i1.36814.

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Autoclaved aerated concrete (AAC) blocks are commonly used for masonry walls. In order to understand the strength of AAC masonry, it is essential to assess the tensile and shear bond strengths of the AAC block-mortar interface for various mortar combinations. This research investigates the bond strength of AAC block mortar interface made up of a) polymer modified mortar (PMM) and b) ordinary cement sand mortar of 1:4 or 1:6 ratio with thickness of 10mm, 15mm or 20mm. A thin cement slurry coating was applied on the block surface before placing the cement sand mortar in the masonry. For all types of interface, shear bond strength of masonry was studied using a triplet test, while the tensile bond strength was determined through a cross-couplet test. Among the cement sand mortar used in this study, cement sand mortar of ratio 1:4 and thickness 15mm showed the maximum shear strength of 0.13MPa with the failure of blocks as the predominant failure while the PMM had shear bond strength of 0.12MPa with the failure of blocks as the predominant failure type. However, in case of the tensile bond strength testing, PMM showed the tensile bond strength of 0.19MPa, which was highest among all the test specimens used in this study. Considering both the tensile and shear bond strengths of the AAC masonry and based on the observed failure pattern, among all the combinations used in the experiment, either PMM or cement-sand mortar of ratio 1:4 and thickness of 15mm can be chosen for the AAC masonry.

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Segura, I., E. Sánchez, A. Moragues, and M. G. Hernández. "Assessment of mortar evolution in pig slurry by mechanical and ultrasonic measurements." Construction and Building Materials 24, no. 9 (September 2010): 1572–79. http://dx.doi.org/10.1016/j.conbuildmat.2010.03.001.

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23

Chouhan, Harshwardhan Singh, Pawan Kalla, Ravindra Nagar, Pradeep Kumar Gautam, and Amar Nath Arora. "Investigating use of dimensional limestone slurry waste as fine aggregate in mortar." Environment, Development and Sustainability 22, no. 3 (November 9, 2018): 2223–45. http://dx.doi.org/10.1007/s10668-018-0286-9.

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Kampa, Łukasz, Agnieszka Chowaniec, Aleksandra Królicka, and Łukasz Sadowski. "The Effect of the Addition of Polypropylene Fibers to Primer on the Pull-Off Strength of Epoxy Resin Coatings." Materials 13, no. 20 (October 20, 2020): 4674. http://dx.doi.org/10.3390/ma13204674.

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This article describes the effect of adding polypropylene fibers to primer on the pull-off strength of epoxy resin coatings. Investigated primers were laid on substrates made of cement mortar and cement slurry. The primer was made of epoxy resin modified with the addition of 0.5%, 1%, 1.5% and 2% of polypropylene fibers. One reference sample was made without the addition of fibers. Then, an epoxy resin coating was applied to each substrate. Four pull-off strength tests were performed for each material configuration. For this purpose, an automatic device for measuring the pull-off strength of the coatings was used. The results were compared with the results obtained for the reference sample. The optimum content of polypropylene fibers was found to be in the range of 0.5–1.0 wt. % of the mass of the resin. One percent of fibers was optimum for the epoxy resin laid on the cement slurry, while 0.5 wt. % of fibers was optimum for the mortar substrate. The addition of a higher amount of polypropylene fibers resulted in a lower pull-off strength of coatings than for the reference sample.

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Zhong, Yan Yu, Dai Li Wang, Xian Wang Zhu, Qiang Guo, Ling Peng, Yu Liu, and Hang Min He. "Failure Analysis of Slurry Pump Impeller in Chehe Dressing Plant." Advanced Materials Research 510 (April 2012): 390–94. http://dx.doi.org/10.4028/www.scientific.net/amr.510.390.

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Chemical composition and metallographic organization were analyzed for the failure characteristics and main reasons of the imported slurry pump impeller used by Chehe Dressing Plant China Tin Group. A series of larger long strip form carbides found on the metallographic organization, which improving cut apart trend on matrix seriously, was the main reason of the impeller failure. Proper amount of vanadium, titanium and rare earth complex modifier can refine carbides and improve their morphology. The best mortar proportion was identified in the laboratory analysis conditions through the wear experiments.

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Zhilkina, Tatyana, Stanislav Sychugov, Alexander Gumeniuk, Rimantas Mackevicius, Vadim Turchin, Vladimir Vasilev, Marat Zakirov, and Alexander Ilinsky. "Technology of soil stabilization with cement-sand grouting mortar with optimal aggregate grading." MATEC Web of Conferences 193 (2018): 05046. http://dx.doi.org/10.1051/matecconf/201819305046.

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This article studies technological, physical and technical properties and corrosion resistance of cement-sand slurry. Comparative data of the strength of test samples made on mortars of equal mobility with a composition of 1:1 (C: S) using river sand with fineness moduli (Mf): 1.50; 1.35; 1.25, showed the best results in the latter case. The use of the "Mylonaft M1" plasticizer in the solution in an amount of 0.5 % of the mass of the cementing with sand with Mf = 1.25 allowed to keep the mobility of 200 mm at W/C ratio = 0.6 without loss of the mixture homogeneity. Investigation of the corrosion resistance of sample mortars with the introduction of 1 % Na2SO4 into it during the process of its preparation made it possible to achieve stability in aggressive sulfate media at low (T = 20 °C) and normal temperatures (T = 5 ° C). In order to mechanize the work on strengthening the loess soils with cementing slurry the traditional equipment used in the production (stationary solution station with a compressor and a pump) has been compared with the advanced mobile unit UNB-125 × 50 SO on the basis of KamAZ 363501.

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Tiecher, Tadeu Luis, Carlos Alberto Ceretta, Jucinei José Comin, Eduardo Girotto, Alcione Miotto, Marcel Pires de Moraes, Lucas Benedet, et al. "Forms and accumulation of copper and zinc in a sandy typic hapludalf soil after long-term application of pig slurry and deep litter." Revista Brasileira de Ciência do Solo 37, no. 3 (June 2013): 812–24. http://dx.doi.org/10.1590/s0100-06832013000300028.

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Successive applications of pig slurry and pig deep litter may lead to an accumulation of copper (Cu) and zinc (Zn) fractions in the soil profile. The objective of this study was to evaluate the Cu and Zn forms and accumulation in a Sandy Typic Hapludalf soil after long-term application of pig slurry and deep litter. In March 2010, eight years after initiating an experiment in Braço do Norte, Santa Catarina (SC), Brazil, on a Sandy Typic Hapludalf soil, soil samples were collected from the 0-2.5, 2.5-5.0, 5-10 and 10-15 cm layers in treatments consisting of no manure application (control) and with applications of pig slurry and deep litter at two levels: the single and double rate of N requirement for maize and black oat succession. The soil was dried, ground in an agate mortar and analyzed for Cu and Zn contents by 0.01 mol L-1 EDTA and chemically fractionated to determine Cu and Zn. The applications of Pig deep litter and slurry at doses equivalent to 90 kg ha-1 N increased the contents of available Cu and Zn in the surface soil layer, if the double of this dose was applied in pig deep litter or double this dose in pig slurry, Cu and Zn migrated to a depth of 15 cm. Copper is accumulated mainly in the organic and residual fractions, and zinc preferentially in the fraction linked to clay minerals, especially in the surface soil layers.

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Shi, Caijun, Zemei Wu, Zhijie Cao, Tung Chai Ling, and Jianlan Zheng. "Performance of mortar prepared with recycled concrete aggregate enhanced by CO2 and pozzolan slurry." Cement and Concrete Composites 86 (February 2018): 130–38. http://dx.doi.org/10.1016/j.cemconcomp.2017.10.013.

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Sánchez, E., J. Massana, M. A. Garcimartín, and A. Moragues. "Mechanical strength and microstructure evolution of fly ash cement mortar submerged in pig slurry." Cement and Concrete Research 38, no. 5 (May 2008): 717–24. http://dx.doi.org/10.1016/j.cemconres.2007.09.021.

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Liu, Xin, and Xin Wang. "The Adhesion Experimental Study on the PESB." Applied Mechanics and Materials 477-478 (December 2013): 646–50. http://dx.doi.org/10.4028/www.scientific.net/amm.477-478.646.

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Strength experiment on the members tied by PESB and adhesion experiment on the PESB anchored in mortar specimen and in concrete specimen are done in this paper. Through the adhesion experiment, the adhesion strength between PESB and mortar or concrete is detected, which can provide reference for the research on the PESB anchored construction measure. The research results have been applied in practical engineering, from which some suggestion is promoted for the construction of the similar buildings, including requirements on the material used in foaming sandwich wall and notice in construction, construction measure on the PESB tied members and so on. The suggestion will contribute the extension of the energy saving sandwich wall with the on site foaming thermal insulation slurry, which can effectively solve the problem of the duration of the insulation layer in the energy saving walls and promote the scientific process of energy saving from thermal insulation.

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MORISHIMA, Shintaro, Makoto YAMAGUCHI, Zhicheng ZHANG, and Shinji KANEYASU. "FUNDAMENTAL MECHANICAL PROPERTIES OF SLURRY INFILTRATED FIBER CONCRETE USING HIGH-FLUIDITY GROUT WITH MORTAR MIXTURE." Cement Science and Concrete Technology 72, no. 1 (March 29, 2019): 293–99. http://dx.doi.org/10.14250/cement.72.293.

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Salih, Shakir, Qais Frayyeh, and Manolia Ali. "Fresh and some mechanical properties of sifcon containing silica fume." MATEC Web of Conferences 162 (2018): 02003. http://dx.doi.org/10.1051/matecconf/201816202003.

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Slurry infiltrated fiber concrete (SIFCON) is one of the recently developed construction material. SIFCON could be considered as a special type of fiber concrete with high fiber content. The matrix of SIFCON consists of flowing cement mortar or cement slurry. SIFCON has a very good potential for application in area where resistance to impact and high ductility are needed especially in designing the seismic retrofit, in the structures under impact and explosive effects and repair of structural reinforced concrete element. The main objective of this paper is to determine the effect of steel fiber content and silica fume (SF) cement replacement on the mechanical properties of SIFCON concrete. The percentage of SF replacement was 10% by weight of cement in SIFCON slurry, and three different volume fractions of hooked ended steel fiber (6, 8.5, and 11) % were used. The tested properties of SIFCON were compressive strength and splitting tensile strength which were carried out on standard size of cubes and cylinders respectively at the age of 7and 28 days. It was observed that the mechanical properties of SIFCON were affected in a positive manner by using silica fume as a partial replacement of cement and by adding steel fiber reinforcement in different percentages. The compressive and splitting tensile strength up to 83.7 MPa and 17.3MPa, respectively were obtained at the age of 28 days.

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Chen, Yu, and Ying Li Gao. "Fly Ash-Desulfurization Gypsum Mortar and Concrete Part I: Mix Proportions and Hydration." Advanced Materials Research 250-253 (May 2011): 809–16. http://dx.doi.org/10.4028/www.scientific.net/amr.250-253.809.

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Fly ash (FA) and flue gas desulphurization gypsum (FGD) were blended in proportion into a new composite binder added with cement, lime and some modifiers. In the paper, the mix proportions of composite binder with low-quality FA and FGD were studied. FA-FGD more than 80% with FA:FGD 3:2 was suggested for mortar, plastering and slurry while FA:FGD 2:1 and FA-FGD 30~40% was recommended for middle-strength concrete. Hydration process of typical mixtures of FA-FGD paste was investigated through SEM and XRD tests. The conclusion could be made that FA showed much improved pozzolana activity especially at early ages due to the existence of FGD as an ideal sulfate activator, which also crystallized later to strengthen the hardened paste. The microstructure of hydrated FA-FGD paste was more excellent than that of neat cement stone or one blended with the same percentage of pure FA.

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Yufeng, Song, and Zhang Enqiang. "Summary of research on pretreatment methods of recycled aggregate." E3S Web of Conferences 293 (2021): 01025. http://dx.doi.org/10.1051/e3sconf/202129301025.

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The recycled aggregate obtained by simple crushing and screening of waste concrete has a rough surface and many protruding edges and corners, and most of the aggregate surface is attached with old mortar, when directly used as aggregate in concrete, the water demand is large, the concrete strength and elastic modulus are low, and the durability is poor. Therefore, proper treatment of recycled aggregate is required.This article summarizes the research status of the pretreatment methods of mechanical strengthening, heating grinding, solution impregnation, cement slurry impregnation, carbonization treatment, nano-modification, microbial modification and water cleaning etc., and simply analyzes the advantages and disadvantages of various treatment methods, which provide a reference for the research of recycled aggregate processing methods.

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Shimada, Hideki, Takashi Sasaoka, Saeid Khazaei, Yasuhiro Yoshida, and Kikuo Matsui. "Performance of Mortar and Chemical Grout Injection into Surrounding Soil When Slurry Pipe-jacking Method is Used." Geotechnical and Geological Engineering 24, no. 1 (February 2006): 57–77. http://dx.doi.org/10.1007/s10706-004-1940-6.

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Helal, Rawnaq Abbas, Haider M. Al-Baghdadi, and Nabeel Hasan Ali Al-Salim. "Using Mortar Infiltrated Fiber Concrete as Repairing Materials for Flat Slabs." Civil Engineering Journal 6, no. 10 (October 1, 2020): 1956–73. http://dx.doi.org/10.28991/cej-2020-03091595.

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This search aims to study and test the effect of using a new material (mortar infiltrated fiber concrete) as repair material in crucial regions that need a special type of repair like (deck of bridges, pavements, and defense structures). This work consisted of three stages: the first stage; testing the engineering properties of slurry infiltrated fiber concrete (compressive, splitting tensile, flexural and bond strengths), by using different types of fibers (End hooked steel fiber, Micro steel fiber, Polypropylene fiber, and Synthetic fiber), in five different types of mortar infiltrated fiber concrete mixes (with a volumetric ratio of fiber 6%), and the age of test was 28 days. After studying the behavior of these mixes in these tests, the second stage of this study was concluded casting reference slab with dimensions 900×900×80 mm from normal strength concrete and repairing two sets of damaged slabs (with dimensions 900×900×50 mm, the first set consist of five slabs damaged in the compression zone, and the second set consist of five slabs damaged in tension zone), the two sets repaired with repair layer from mortar infiltrated fiber concrete with thickness 30 mm. The third stage of the study was testing the effect of the repair material (mortar infiltrated fiber concrete) on the flexural behavior of the repaired slab specimens in (flexural strength, deflection characteristics, and ductility), through using a hydraulic jack with a four-point load system. The results of testing slab specimens indicated significant improvement in the flexural behavior of the repaired slab when compared with the reference slab, the slabs repaired in the compression zone recorded increasing in range 2-39% in ultimate load and the slabs that repaired in tension zone recorded 4-71% increasing in ultimate load .also recorded better deflection values through testing the slabs specimens that repaired. The ductility of the repaired slab specimens increased significantly from 25 to 91% compared with the reference slab specimens. These results indicated excellent effect mortar infiltrated fiber concrete as a perfect repair material for slabs that damaged in compression and tension zones.

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Manolia, A. A., A. S. Shakir, and J. F. Qais. "The effect of fiber and mortar type on the freezing and thawing resistance of Slurry Infiltrated Fiber Concrete (SIFCON)." IOP Conference Series: Materials Science and Engineering 454 (December 12, 2018): 012142. http://dx.doi.org/10.1088/1757-899x/454/1/012142.

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Yang, Rongwei, Kefei Li, Linlin Wang, Michel Bornert, Zhiling Zhang, and Tao Hu. "A micro-experimental insight into the mechanical behavior of sticky rice slurry-lime mortar subject to wetting-drying cycles." Journal of Materials Science 51, no. 18 (June 7, 2016): 8422–33. http://dx.doi.org/10.1007/s10853-016-0099-x.

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Li, Lufan, Tung-Chai Ling, Quan Cheng, and Kim Hung Mo. "Synergistic Effect of Pre-carbonated Slurry and Mixing Sequence on the Performance of Self-compacting Recycled Aggregate Modified Mortar." Waste and Biomass Valorization 12, no. 9 (February 5, 2021): 5201–10. http://dx.doi.org/10.1007/s12649-020-01265-1.

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Drzymala, Tomasz, and Michal Reszka. "Analysis of the impact of high temperature on the change in tensile strength of cement mortars with or without polypropylene fibres added." Scientific Journal of the Military University of Land Forces 189, no. 3 (September 30, 2018): 109–26. http://dx.doi.org/10.5604/01.3001.0012.6231.

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When evaluating concrete, its strength is the most important feature from the practical point of view. In compliance with technological requirements, the strength of concrete depends primarily on its composition, mainly on the content and strength of cement slurry. This is because this concrete component is most susceptible to changes in working conditions in a construction, including high temperature impact on concrete during the fire. The paper presents the results of tests performed on the cement mortar with and without the addition of polypropylene fibers. This treatment allowed for the elimination of the effect of the coarse aggregate by reason of the accuracy of the tested strength characteristics. The studies concerned the impact of high temperature on the change in tensile strength of cement mortars modified with the addition of polypropylene fibers. The analysis of available literature shows that one of the main causes of concrete’s thermal spalling is seen in high tensile stresses. The results of many tests prove that the addition of polypropylene fibers can have a positive effect on the behavior of concrete structures at high temperatures and help reduce spalling. The polypropylene fibers present in a composite may also positively influence the increase in tensile strength. This article discusses the purpose and scope of research, research methods, the experiment plan, test benches, and test results as well. The conclusions of the study were formulated in the final part of the article.

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Diao, Ying Lu, Guo Liang Dai, and Wei Ming Gong. "Experimental Research on the Pile-Base Post-Grouting Effects of Piles of Liao River Bridge." Advanced Materials Research 243-249 (May 2011): 2389–94. http://dx.doi.org/10.4028/www.scientific.net/amr.243-249.2389.

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Static load tests were carried out with Osterberg method on 3 bored piles formed in Liao River Bridge. Bearing capacity, base resistance and frictional resistance were obtained before and after base grouting. Based on the test results, the ultimate bearing capacities of piles were increased for 14.74%~43.87%, that of pile bases were increased for 89.57% ~ 163.49% and the frictional resistances were most increased for 31.20%. The pile bearing behavior was improved. Not only base resistances were improved after grouting, but also frictional resistances were improved by bettering the characteristics of soils and interfaces between piles and soils. After grouting, pile base resistance ratio of pile bearing capacity increased, and some frictional piles changed into end-bearing frictional piles. The frictional resistance of lower pile increased more than that of upper pile after grouting. The slurry penetration height of base grouting had a certain range, which was affected by quantity of mortar intrusion, grouting technology, grouting pressure and geological structure.

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Qin, Wei, and Jialin Xu. "Dynamic Secondary Borehole-Sealing Method for Gas Drainage Boreholes along the Coal Seam." Geofluids 2018 (July 17, 2018): 1–11. http://dx.doi.org/10.1155/2018/1723019.

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Under the influence of advanced abutment pressure, the tightness of a borehole is destroyed, so secondary borehole sealing is needed; however, the opportune time for a secondary borehole sealing is unclear. In addition, current borehole-sealing devices do not have a secondary borehole-sealing functionality. In this paper, an opportunity election model of secondary borehole sealing was established, and a dynamic secondary borehole-sealing device was developed. In working face 3908 of the Kaiyuan Coal Mine, an in situ dynamic secondary borehole-sealing test was conducted. The test results show that the tightness of the boreholes sealed with high-water-expansion slurry is obviously better than that of the boreholes sealed with cement mortar and polyurethane. When a borehole is destroyed by the peak of the advanced abutment pressure, the secondary borehole-sealing measures can significantly improve borehole suction pressure, gas concentration, and gas drainage amount in the advanced abutment pressure loading stage.

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Peng, Zimao. "Performance Prediction and Mix Ratio Optimization for Multielement Green High-Performance Fiber-Reinforced Cement Matrix Composite." Annales de Chimie - Science des Matériaux 45, no. 1 (February 28, 2021): 59–67. http://dx.doi.org/10.18280/acsm.450108.

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Green high-performance fiber-reinforced cement (GHPFRC) matrix composite is prepared by mixing matrix composites like slurry, mortar, or concrete with reinforcing materials like metal or inorganic nonmetal fiber, synthetic fiber, or natural organic fiber by a certain method. This composite is more energy-efficient, ductile, low-carbon, economic, and environmentally friendly than ordinary concrete. However, the performance of GHPFRC matrix composite has not been fully studied. The existing research only deals with the seismic performance and fire resistance of the material, failing to systematically discuss the optimal mix ratio. To solve the problem, this paper presents an optimization strategy for multielement GHPFRC matrix composite, and carries out multiple tests on its basic mechanical performance, toughness, impact resistance, shrinkage cracking, dry shrinkage performance, and durability. The test data on various indices verify the superior performance of the prepared multielement GHPFRC matrix composite. Further, the optimal mix ratio of the material was determined as: 60% cement, 30% fly ash, and 10% silica ash, with the water-cement ratio of 0.4, water reducer dosage of 1.5%, and quartz sand dosage of 500g.

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Zhao, Yuan, Zhennan Han, Yali Ma, and Qianqian Zhang. "Establishment and verification of a contact model of flowing fresh concrete." Engineering Computations 35, no. 7 (October 1, 2018): 2589–611. http://dx.doi.org/10.1108/ec-11-2017-0447.

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Purpose The purpose of this paper is to establish a new dynamic coupled discrete-element contact model used for investigating fresh concrete with different grades and different motion states, and demonstrate its correctness and reliability according to the rheological property results of flow fresh concrete in different working states through simulating the slump process and mixing process. Design/methodology/approach To accurately express the motion and force of flowing fresh concrete in different working states from numerical analysis, a dynamic coupled discrete-element contact model is proposed for fresh concrete of varying strength. The fluid-like fresh concrete is modelled as a two-phase fluid consisting of mortar and aggregate. Depending on the contact forms of the aggregate and mortar, the model is of one of the five types, namely, Hertz–Mindlin, pendular LB contact, funicular mucous contact, capillary LB contact or slurry lift/drag contact. Findings To verify the accuracy of this contact model, concrete slump and cross-vane rheometer tests are simulated using the traditional LB model and dynamic coupled contact model, for five concrete strengths. Finally, by comparing the simulation results from the two different contact models with experimental data, it is found that those from the proposed contact model are closer to the experimental data. Practical implications This contact model could be used to address issues such as (a) the mixing, transportation and pumping of fresh concrete, (b) deeper research and discussion on the influence of fresh concrete on the dynamic performance of agitated-transport vehicles, (c) the behaviour of fresh concrete in mixing tanks and (d) the abrasion of concrete pumping pipes. Originality/value To accurately express the motion and force of flowing fresh concrete in different working states from numerical analysis, a dynamic coupled discrete-element contact model is proposed for fresh concrete of varying strength.

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TANAKA, Kyoji, Sang keuh OH, and Michio KOIKE. "DENSIFYING EFFECT OF SILICEOUS SLURRY COATING ON MORTAR SUBSTRATA HAVING CRACKS OR COLD JOINTS : Study on concrete waterproofing system in a damp environment Part 3." Journal of Structural and Construction Engineering (Transactions of AIJ) 435 (1992): 11–18. http://dx.doi.org/10.3130/aijsx.435.0_11.

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46

Elbeih, Ahmed, Mahmoud Abdelhafiz, and Ahmed K. Hussein. "Influence of Different Polymeric Matrices on the Properties of Pentaerythritol Tetranitrate." Defence Science Journal 71, no. 2 (March 10, 2021): 177–84. http://dx.doi.org/10.14429/dsj.71.16132.

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Six different polymeric matrices were fabricated to reduce the sensitivity of PETN (Pentaerythritol tetranitrate). The polymeric matrices used were individually based on Acrylonitrile butadiene rubber (NBR) softened by plasticizer, styrene-butadiene rubber (SBR) softened by oil, polymethyl methacrylate (PMMA) plasticised by dioctyl adipate (DOA), polydimethylsiloxane (PDMS), polyurethane matrix, and Fluorel binder. A computerised plastograph mixer was utilised for producing three polymer-bonded explosives (PETN-NBR, PETN-SBR, and PETN-PDMS) based on the non-aqueous method. A cast-cured method was used to prepare PBX based on polyurethane (PETN-HTPB), while the slurry technique was used to prepare beads of PETN coated by either fluorel binder (PETN-FL) or based on PMMA forming (PETN-PMMA). The heat of combustion and sensitivities were investigated. The velocity of detonation was measured, while the characteristics of the detonation wave were deduced theoretically by the EXPLO 5 (thermodynamic code). The ballistic mortar experiment was performed to determine the explosive strength. By comparing the results, it was found that PDMS has the highest influence on decreasing the impact sensitivity of PETN, while the cast cured PETN-HTPB has the lowest friction sensitivity. On the other side, PETN-FL has the highest detonation parameters with high impact sensitivity. Several relationships were verified and the matching between the measured results with the calculated ones was confirmed.

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Soylu, Nurullah, and Ahmet Ferhat Bingöl. "Research on effect of the quantity and aspect ratio of steel fibers on compressive and flexural strength of SIFCON." Challenge Journal of Structural Mechanics 5, no. 1 (March 12, 2019): 29. http://dx.doi.org/10.20528/cjsmec.2019.01.004.

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SIFCON (Slurry Infiltrated Fiber Reinforced Concrete) is a composite which occur hardening of the matrix phase, consists of cement, water, mineral additives, fine sand, water reducing plasticizer, and reinforced with high volume fiber (5–20%). The main difference from the high strength concrete (HSC) is the ductile behaviour at failure. However, the brittleness increases with the strength increase in HSC, SIFCON has a ductile behaviour because of the high volume fiber content, low permeability, high durability. Despite fiber content is 2-3% in fiber reinforced concrete, fiber content may be ten times more in SIFCON and ductility is gained. This concrete is suggested to be used in military buildings against explosion, industrial grounds, airports, and bridge feet. In this study, in order to investigate the compressive and flexural strengths of SIFCON, the aspect ratio and fiber volume of steel fibers were chosen as variable and the effects of these parameters on compressive and flexural strengths were investigated. In the study, steel fibers with aspect ratio of 40, 55, 65, and 80 were used in 0, 4, 8 and 12% ratios. The water/binder ratio was kept constant at 0.35. Silica fume is used 10% and water-reducing plasticizer is used 1.5% of cement by weight. 7 and 28 days cured samples were subjected to compressive and flexural tests and the results were compared. As a result of the tests carried out, increases in both the compressive and flexural strengths of SIFCON specimens were determined with increasing fiber volume up to 8%. Strength reductions were observed at higher ratios. In cases where the fiber volume is too high, it has been seen that the strengths were decreased. The reason of strength reduction can be explained by the difficulty of passing ability of mortar between the fibers. The highest strengths were obtained from fibers with the aspect ratio of 80. Increase in the aspect ratio as well as increases in compressive and flexural strengths have been found.

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Fu, Hao, Yang Dong Ou, Wei Ting Xu, and Lin Jie Kong. "The Experimental Study of Using Composite Polymer Fiber in Concrete." Advanced Materials Research 785-786 (September 2013): 257–63. http://dx.doi.org/10.4028/www.scientific.net/amr.785-786.257.

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Using the cylinder to take 2L as sample from five equidistant azimuthally and the center point to weight. Wash away the cement slurry in sample thoroughly first. Put the rest into the container full with water and churn. Then, collect the suspended fiber using the square-hole sieve of 75 um aperture. Churn it as more as possible to make sure of collecting whole fiber in samples. Wash clear and dry under 105±5 Celsius degree to constant weight. After cooling to room temperature then weight them respectively and accurate to 0.01g. The dispersion performance will be qualified if the dispersion relative error between arithmetic average value of synthetic fiber content and theoretical calculated value is from -10% to 10%. The concrete test steps is as per “Cement Concrete and Mortar Synthetic Fiber GBT21120-2007”. Slump、slump flow of all the fresh concrete were tested to determine the fresh properties of fiber reinforced concrete. The mixing proportions are listed in Table 1, All the strength tests were carried out following the Chinese standard GB/T 50081-2002. Resistance to chloride ion penetration was measured according to ASTM C1202 (Rapid determination of the Chloride Permeability of Concrete) at the curing age of 7d、28 days using a proportion of the Φ100mm × 50mm cylinders. The early crack resistance test is according to the fiber reinforced concrete testing standards CECS 13-2009. It can be concluded that the working performance of composite fiber concrete are better compared with the single mixed concrete. It is obvious that the spread degree is being larger as the increasing of cellulosic fiber based on the certain adulterate amount. Fiber incorporation has little influence on concrete 7 d 、28 d age compression strength. The 7d and 28d splitting tensile strength、flexural strength were enhanced by incorporation of fibers. The addition of fiber improved the resistance ability of 7d and 28d fiber concrete chloride penetration to a great extent. It improved the ability of corruption resistance from seawater and extended the life of concrete and hence promoting the wide spread usage in marine project. Fiber incorporation delayed the occurrence of early crack and controlled the development of cracks, which made the concrete plastic shrinkage crack width and the maximum crack areas reduced.

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Massana, J., A. Guerrero, R. Antón, M. A. Garcimartín, and E. Sánchez. "The aggressiveness of pig slurry to cement mortars." Biosystems Engineering 114, no. 2 (February 2013): 124–34. http://dx.doi.org/10.1016/j.biosystemseng.2012.11.003.

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Kabeer, K. I. Syed Ahmed, and Ashok Kumar Vyas. "Experimental investigation on utilization of dried marble slurry as fine aggregate in lean masonry mortars." Journal of Building Engineering 23 (May 2019): 185–92. http://dx.doi.org/10.1016/j.jobe.2019.01.034.

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Journal articles on the topic 'Slurry mortar'

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