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Journal articles on the topic 'High Strength Concrete Block'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Bae, Baek-Il, Hyun-Ki Choi, and Chang-Sik Choi. "Flexural Strength Evaluation of Reinforced Concrete Members with Ultra High Performance Concrete." Advances in Materials Science and Engineering 2016 (2016): 1–10. http://dx.doi.org/10.1155/2016/2815247.

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Flexural strength evaluation models for steel fiber reinforced ultra high strength concrete were suggested and evaluated with test results. Suggested flexural strength models were composed of compression stress blocks and tension stress blocks. Rectangular stress block, triangular stress block, and real distribution shape of stress were used on compression side. Under tension, rectangular stress block distributed to whole area of tension side and partial area of tension side was used. The last model for tension side is realistic stress distribution. All these models were verified with test res

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2

Lesovik, V., M. Elistratkin, and A. Sal'nikova. "HIGH STRENGTH CONCRETE FOR LEGO-BLOCKS." Bulletin of Belgorod State Technological University named after. V. G. Shukhov 6, no. 5 (2021): 8–18. http://dx.doi.org/10.34031/2071-7318-2021-6-5-8-18.

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Lego technology is one of the modern construction solutions providing cost reduction, increasing architectural expressiveness and the pace of work. This is the development of groove-ridge positioning systems and connection of small-piece wall elements. Currently, the technology of Lego blocks is implemented on various types of building materials: ceramic and hyper-pressed non-fired bricks, blocks from various types of lightweight concrete, which have not found wide practical application due to an obvious shift in the balance of properties either towards aesthetics – brick, or thermal insulatio

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3

FORTES, E. S., G. A. PARSEKIAN, J. S. CAMACHO, and F. S. FONSECA. "Compressive strength of masonry constructed with high strength concrete blocks." Revista IBRACON de Estruturas e Materiais 10, no. 6 (2017): 1273–319. http://dx.doi.org/10.1590/s1983-41952017000600008.

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Abstract Although the use of high strength concrete blocks for the construction of tall buildings is becoming common in Brazil, their mechanical properties and behavior are not fully understood. The literature shows a gap in experimental studies with the use of high strength concrete blocks, i.e., those with compressive strength greater than 16 MPa. The work presented herein was conducted in order to study the behavior of high strength structural masonry. Therefore, the compressive strength and modulus of elasticity of concrete block walls tested under axial load were assessed. The specimens i

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4

Singh, Brijesh, Vikas Patel, P. N. Ojha, and V. V. Arora. "Analysis of stress block parameters for high strength concrete." Journal of Asian Concrete Federation 6, no. 1 (2020): 1–9. http://dx.doi.org/10.18702/acf.2020.6.6.1.

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Singh, Brijesh, Vikas Patel, P. N. Ojha, and V. V. Arora. "Analysis of stress block parameters for high strength concrete." Journal of Asian Concrete Federation 6, no. 1 (2020): 1–9. http://dx.doi.org/10.18702/acf.2020.6.6.1.1.

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6

Assi, Nizar, Husain Al-Gahtani, and Mohammed A. Al-Osta. "Numerical Investigation of Stress Block for High Strength Concrete Columns." Civil Engineering Journal 6, no. 5 (2020): 974–96. http://dx.doi.org/10.28991/cej-2020-03091522.

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This paper is intended to investigate the stress block for high strength concrete (HSC) using the finite element model (FEM) and analytical approach. New stress block parameters were proposed for HSC including the stress intensity factor (α1) and the depth factor (β1) based on basic equilibrium equations. A (3D) finite element modeling was developed for the columns made of HSC using the comprehensive code ABAQUS. The proposed stress parameters were validated against the experimental data found in the literature and FEM. Thereafter, the proposed stress block for HSC was used to generate interac

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7

Deng, Zhi Yong. "Mechanical Properties Research on Concrete Block Doped Nano-TiO₂ under the Conditions of Common Conservation." Applied Mechanics and Materials 238 (November 2012): 9–12. http://dx.doi.org/10.4028/www.scientific.net/amm.238.9.

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As a new high performance construction material, concrete doped nano-TiO2 greatly expanded its application in engineering with the advantages of high strength and high durability. By compressive test of concrete block doped nano-TiO2 under the conditions of common conservation, this paper respectively studies the regulation of compressive properties of the concrete block affected by the factors such as concrete strength and nano-TiO2 dioxide.

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8

He, Qiang, Jiang Xu, Dong Dong Chen, and Pei Qing Wang. "Experiment Research on Concrete Block by Ultraviolet Irradiation in Tibet Plateau." Applied Mechanics and Materials 744-746 (March 2015): 1402–5. http://dx.doi.org/10.4028/www.scientific.net/amm.744-746.1402.

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According to the characteristics of high altitude and strong ultraviolet radiation in Tibet, this paper do ultraviolet irradiation experiment research to different strength grades of concrete blocks in a closed laboratory, it is found that ultraviolet rays has promoting effect to early strength growth of test block, but the growth became slow along with the time.

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9

Belykh, Svetlana A., Anastasiya M. Daminova, and Vardges E. Margaryan. "A high-strength binder based on liquid glass for cementless polystyrene concrete." Journal «Izvestiya vuzov. Investitsiyi. Stroyitelstvo. Nedvizhimost» 10, no. 3 (2020): 378–87. http://dx.doi.org/10.21285/2227-2917-2020-3-378-387.

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This research set out to obtain a high-strength binder based on low-energy liquid glass using silica fume produced in the Bratsk Ferroalloy Plant. The starting materials used for the development of polystyrene concrete were liquid glass obtained from silica fume using sol-gel technology, fly ash, screening from diabase crushing, ground channel quartz sand and foamed polystyrene granules. Math-ematical processing of the results was performed using the Statistica 10 software package in the mod-ule of planned experiment. According to the conducted analysis, the resulting material corresponds to t

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10

Hunyak, Oleksii, Khrystyna Sobol, Taras Markiv, and Volodymyr Bidos. "The effect of natural pozzolans on properties of vibropressed interlocking concrete blocks in different curing conditions." Production Engineering Archives 22, no. 22 (2019): 3–6. http://dx.doi.org/10.30657/pea.2019.22.01.

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Abstract Concrete block pavements have become an attractive engineering and economical alternative to both flexible and rigid pavements because of it’s high strength and durability. The influence of pozzolanic mineral additions – natural zeolite and expanded perlite powder on the properties of concrete interlocking blocks in different curing conditions has been studied. The use of zeolite as a substitute for cement in the production of concrete blocks increased the water demand but decreased the water absorption of the blocks. Obtained results show, that concrete blocks with 10% substitution o

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11

Mokhtar, M., M. Kaamin, S. Sahat, and N. B. Hamid. "The Utilisation of Shredded PET as Aggregate Replacement for Interlocking Concrete Block." E3S Web of Conferences 34 (2018): 01006. http://dx.doi.org/10.1051/e3sconf/20183401006.

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The consumption of plastic has grown substantially all over the world in recent years and this has created huge quantities of plastic-based waste. Plastic waste is now a serious environmental threat to the modern way of living, although steps were taken to reduce its consumption. This creates substantial garbage every day, which is much unhealthy. Plastic bottles such as Polyethylene terephthalate (PET) was use as the partially component in this making of interlocking blocks concrete. This project investigates the strength and workability of the interlocking block concrete by replacing course

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12

MURAMATSU, Akitsugu, Tsutomu KOMURO, Kazumasa IMAI, Takeyoshi KORENAGA, and Minehiro NISHIYAMA. "AN EVALUATION METHOD OF FLEXURAL STRENGTH OF HIGH STRENGTH CONCRETE COLUMNS USING STRESS BLOCK." Journal of Structural and Construction Engineering (Transactions of AIJ) 71, no. 604 (2006): 127–34. http://dx.doi.org/10.3130/aijs.71.127_2.

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13

NOGUCHI, Takafumi, and Fuminori TOMOSAWA. "EFFECT OF SPHERICAL BEARING BLOCK BEHABIOUR ON MEASURED COMPRESSIVE STRENGTH OF HIGH STRENGTH CONCRETE." Journal of Structural and Construction Engineering (Transactions of AIJ) 60, no. 478 (1995): 9–17. http://dx.doi.org/10.3130/aijs.60.9_6.

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14

Yu, Le Le, Jia Dai Chen, and Yi Wen Wu. "The Performance of the Ceramsite Concrete Block and its Application Research." Applied Mechanics and Materials 744-746 (March 2015): 1543–46. http://dx.doi.org/10.4028/www.scientific.net/amm.744-746.1543.

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Ceramsite concrete and ceramsite concrete block are characterized by lightweight, high strength and good thermal insulation properties, which are widely applied to construction. If amoderate amount of polystyrene particles is added during the working process of ceramsite concrete block in order to improve its physical properties, a kind of new ceramsite concrete building materials is produced. Based on the experimental studies, the article expounds the physical and mechanical properties in terms of density, water absorption and compressive strength, with the purpose of providing reliable evide

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15

Shi, Chang Ying, and Li Juan Wang. "Study of Reborn Concrete Block Using Construction Wastes." Advanced Materials Research 800 (September 2013): 85–88. http://dx.doi.org/10.4028/www.scientific.net/amr.800.85.

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Using recycled coarse aggregate of Class I to get the high-strength class concrete block, using cycled coarse aggregate of Class III to get the concrete block whose strength level meets the requirements and to get concrete block that has excellent thermal insulation properties, to meet the needs of the diverse market. Finally, through the analysis of the production process and detection data, we can make a conclusive, provide a theoretical basis for the use of construction waste, and provide technical support for the production.

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16

Martirossyan, Armen, and Yan Xiao. "Flexural-Shear Behavior of High-Strength Concrete Short Columns." Earthquake Spectra 17, no. 4 (2001): 679–95. http://dx.doi.org/10.1193/1.1423656.

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This paper discusses the seismic performance of high-strength concrete columns. The research is a part of an ongoing comprehensive experimental program to investigate seismic design methods of high-strength concrete structures. The first stage of the program involved testing of fifteen high-strength concrete stub columns under concentric axial compression. The concrete compressive strength was about 69 MPa (10,000 psi). In addition, a large database including eighty-six similar tests conducted by other researchers was constructed, and stress-strain behavior of high-strength concrete was invest

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17

Abuserriya, A. Abdelrahman, B. Bashir H. Osman, and C. Salma Y. Mahmoud. "Reusing of Construction Debris in Plain Concrete Elements." FES Journal of Engineering Sciences 9, no. 3 (2021): 81–87. http://dx.doi.org/10.52981/fjes.v9i3.700.

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Construction is a serious environmental problem and a challenge for people who concerned with sustainability in the construction field. Previous studies showed positive results for the use of recycled aggregates in the concrete production. This study portrays the results for utilizing construction debris for casting different types of concrete blocks. The recycled concrete debris was used in different ratios (0%, 50%, and 100%) in replacement for natural coarse aggregates for different targeted compressive strength (B250, B300, B350 and B400). Two types of water (pure and sea water) were used

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18

Ma, Ji, Feng Du, and Shuai Zhang. "Acoustic Emission Characteristics of Normal and Layered Concrete Blocks during Dilating/Static Fracture." Advances in Materials Science and Engineering 2020 (January 8, 2020): 1–14. http://dx.doi.org/10.1155/2020/7325437.

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Static fracturing technology is one of the most effective methods for localized breaking of rock and concrete. Layered concrete and rock structures are commonly seen in engineering applications such as breaking of concrete buildings, stone cutting, and excavation of rock in underground spaces. Therefore, it is essential to study the static fracturing characteristics of layered concrete to ensure the safety of engineering construction processes. In this paper, using acoustic emission (AE) technology and surface displacement monitoring, the deformation and fracturing of ordinary-strength concret

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19

Pianchaiyaphum, Sawitri, Suphaphat Kwonpongsagoon, Premrudee Kanchanapiya, and Chakrapan Tuakta. "Recycling of Non-metallic Residue from Waste Printed Circuit Boards to Produce Interlocking Concrete Blocks." International Journal of Environmental Science and Development 12, no. 6 (2021): 169–74. http://dx.doi.org/10.18178/ijesd.2021.12.6.1336.

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The process of copper recovery from waste printed circuit board has generated large amounts of non-metallic fraction (NMF) residue. In this research, the residue was recycled as a substitute for fine aggregates at 0%, 5%, 10%, 15%, and 20% to produce interlocking concrete blocks. Properties of the interlocking concrete blocks produced in this study, such as density, water absorption, compressive strength, were firstly examined and the selected mixes were further evaluated for the heavy metal leachability. The results indicated that the NMF residue affected physical, mechanical and chemical pro

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20

PASSOS, L., A. L. MORENO Jr., and A. A. A. SOUZA. "Lightweight concrete with coarse aggregate from ceramic waste at high temperatures." Revista IBRACON de Estruturas e Materiais 13, no. 2 (2020): 433–54. http://dx.doi.org/10.1590/s1983-41952020000200012.

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Abstract With the increasing use of recycled materials from civil construction, mainly as substitute for some aggregates in concrete mixtures, it is necessary to obtain technical information on the performance of these new mixtures. National and international research on the use of ceramic waste in concrete production highlight good results of this new material’s mechanical performance in environmental situations. However, little is known about its behavior at high temperatures. In this context, we sought to verify the performance of concrete mixtures produced with aggregates from ceramic bloc

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21

Sim, Chungwook, Maher Tadros, David Gee, and Micheal Asaad. "Flexural design of precast, prestressed ultra-high-performance concrete members." PCI Journal 65, no. 6 (2020): 35–61. http://dx.doi.org/10.15554/pcij65.6-02.

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Ultra-high-performance concrete (UHPC) is a special concrete mixture with outstanding mechanical and durability characteristics. It is a mixture of portland cement, supplementary cementitious materials, sand, and high-strength, high-aspect-ratio microfibers. In this paper, the authors propose flexural design guidelines for precast, prestressed concrete members made with concrete mixtures developed by precasters to meet minimum specific characteristics qualifying it to be called PCI-UHPC. Minimum specified cylinder strength is 10 ksi (69 MPa) at prestress release and 18 ksi (124 MPa) at the tim

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22

Wang, Xue, and Yuan Chen Guo. "Experimental Research on Foamed Concrete Block with High Addition Crushed Brick Powder." Advanced Materials Research 602-604 (December 2012): 934–37. http://dx.doi.org/10.4028/www.scientific.net/amr.602-604.934.

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Crushed brick foamed concrete block is made of crushed brick as a main raw material and Portland cement as a cementious material, mixed with various additives, foamed by foamer and cured under the ordinary temperature and pressure condition. Studies have shown that: (1) The main chemical composition of CBP are SiO2 and Al2O3, CBP has high content vitreous body. CBP has a certain activity (2) With the increase of CBP fineness, the compressive strength of the specimen increases. (3) With the increase of the mixing amount of CBP, the compressive strength of the specimen decrease. (4) With the inc

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23

Xie, Hong Bo, Wei Bin Ma, and Can Tao Ye. "Synthesis of High-Strength and Water-Resistant Phosphogypsum Small Hollow Block." Advanced Materials Research 989-994 (July 2014): 39–44. http://dx.doi.org/10.4028/www.scientific.net/amr.989-994.39.

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The non-calcined phosphogypsum was modified and purified by quicklime, aged, treated by balling and cement coating, and then mixed with an appropriate amount of water, the cementitious material, gravel and so on. After using the vibration pressure molding process and the nature curing, the prepared high-strength and water-resistant phosphogypsum small hollow block can produce a softening coefficient of 0.82 and a compressive strength of 7.5 MPa, and the other properties meet the MU7.5 grade requirements of normal concrete small hollow block on the GB 8239-1997, which broadens the application r

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Jiao, Zhenzhen, Ying Wang, Wenzhong Zheng, Wenxuan Huang, and Xianyu Zhou. "Use of Industrial Waste Slag in Alkali-Activated Slag Ceramsite Concrete Hollow Blocks." Applied Sciences 8, no. 12 (2018): 2358. http://dx.doi.org/10.3390/app8122358.

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In this paper, a parametric experimental study developing the alkali-activated slag concrete hollow block (AASCHB) is discussed. Fourteen trial mixes of alkali-activated slag concrete containing pottery sand and ceramsite with different water-to-slag ratios, sand ratios, silicate moduli, and Na2O contents were evaluated to determine the optimal mix for high compressive strength and low drying shrinkage. All four factors evaluated were found to be significant for the desired properties. A series of 390 × 190 × 190 mm3 AASCHBs were prepared using the optimal mix with a water-to-slag ratio of 0.3

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al-Attar, Tareq, Qais Hassan, Sura Mejbel, and Hussein Dawood. "The role of cover and rebar characteristics on load-slip behavior of reinforced concrete members in compression." MATEC Web of Conferences 162 (2018): 04017. http://dx.doi.org/10.1051/matecconf/201816204017.

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This paper describes a part of an extensive research work devoted to evaluate the bond strength between rebars and concrete through different testing procedures. Main parameters in this part are the concrete cover and rebar diameter. The tested specimen consisted of a single bar embedded in a concrete block with square cross-sectional area and is being tested under compressive load. Three concrete block sizes were cast to offer three different cover for the embedded rebars. The dimensions of these blocks were; 150×150×135, 100×100×135 and 200×200×185 mm. Three bar diameters, 12, 16 and 20 mm,

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Yu, Shui Jun, Peng Fei Zhang, Xiao Fang Yang, Hong Zhao, and Xiao Li Chen. "Refractory Performance Study on Foamed Concrete and Concrete." Applied Mechanics and Materials 357-360 (August 2013): 1034–38. http://dx.doi.org/10.4028/www.scientific.net/amm.357-360.1034.

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Foam concrete is used in building energy saving and heat preservation project, and its refractory performance is very important to improve the fire resistance ability of the building. In this paper, fireproof property of the foamed concrete were studied.In the simulation fire conditions, compressive strength value of foamed concrete in different density, different calcination time, and different water content cases were determined first, then influence of these conditions on the foamed concrete refractory performance were researched. The results showed that foamed concrete compressive strength

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27

Hu, Da Lin, Long Gang Chen, and Feng Chen. "Test Study of Compressive Strength of High-Strength Stone Masonry." Applied Mechanics and Materials 71-78 (July 2011): 3794–99. http://dx.doi.org/10.4028/www.scientific.net/amm.71-78.3794.

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Stone masonry with micro-aggregate concrete joints has been widely used in long span arch bridges in China. However, the mechanical properties of this kind of high-strength masonry have been seldom studied. This paper presents compressive strength test study of eight groups of masonry specimens, which consist of C30 or C40 micro-aggregate concrete joints and five kinds of dressed stone blocks. The masonry mechanical behavior is described and test results are analyzed. An empiric formula of the masonry compressive strength is obtained. Finally, design value of masonry compressive strength is as

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28

Hu, Da Lin, Feng Cheng, and Long Gang Chen. "Test Study of Shear Strength of High Strength Stone Masonry." Key Engineering Materials 452-453 (November 2010): 365–68. http://dx.doi.org/10.4028/www.scientific.net/kem.452-453.365.

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In China many long span stone arch bridges were built in the last 5 decades, most of these bridges were built with micro-aggregate concrete joint masonry. However, the mechanical properties of this kind masonry have been seldom studied. Based on 5 groups of specimens with C30 or C40 micro-aggregate concrete joints and dressed blocks, shear strength of the masonry is tested and analyzed, friction coefficients and empiric formulas of shear strength of the masonry are presented in this paper, design value of shear strength of the masonry is assessed and discussed.

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Rojas-Duque, Oriana, Lina Marcela Espinosa, Rafael A. Robayo-Salazar, and Ruby Mejía de Gutiérrez. "Alkali-Activated Hybrid Concrete Based on Fly Ash and Its Application in the Production of High-Class Structural Blocks." Crystals 10, no. 10 (2020): 946. http://dx.doi.org/10.3390/cryst10100946.

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This article reports the production and characterization of a hybrid concrete based on the alkaline activation of a fly ash (FA) of Colombian origin, which was added with 10% Portland cement (OPC) in order to promote the compressive strength development at room temperature. The alkali-activated hybrid cement FA/OPC 90/10 was classified as a low heat reaction cement (type LH), according to American Society of Testing Materials, ASTM C1157; the compressive strength was of 31.56 MPa and of 22.68 MPa (28 days) at the levels of paste and standard mortar, respectively, with an initial setting time o

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Hou, Yonghui, Shuangyin Cao, Xiangyong Ni, and Yizhu Li. "Research on Concrete Columns Reinforced with New Developed High-Strength Steel under Eccentric Loading." Materials 12, no. 13 (2019): 2139. http://dx.doi.org/10.3390/ma12132139.

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The use of new developed high-strength steel in concrete members can reduce steel bar congestion and construction costs. This research aims to study the behavior of concrete columns reinforced with new developed high-strength steel under eccentric loading. Ten reinforced concrete columns were fabricated and tested. The test variables were the transverse reinforcement amount and yield strength, eccentricity, and longitudinal reinforcement yield strength. The failure patterns were compression and tensile failure for columns subjected to small eccentricity and large eccentricity, respectively. Th

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Majeet, Anas Hameed, and Ahmad Jabar Hussain Alshamary. "The Performance of Self-Compacted High Strength Concrete Columns with Laced Steel Section." Civil Engineering Journal 4, no. 11 (2018): 2606. http://dx.doi.org/10.28991/cej-03091185.

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In view of the great orientation to the steel buildings and the large role played by the columns in carrying and transferring the loads it is necessary to go to strengthen the steel rolled columns to meet the requirements of the architecture that witch is looking for large spacing. In present paper this research the objectives of this research can be summarized as following: prevent local buckling occurs in columns, strengthen the steel columns from the weak axis in a new methodology, to compare buckling loads of single lacing reinforcement versus double lacing reinforcement and obtain a high

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Zhang, Yong Quan, Jie Yuan, and Yong Ge. "High Strength Concrete Small Hollow Blocks Made with Rock Chips as Aggregates." Advanced Engineering Forum 5 (July 2012): 333–38. http://dx.doi.org/10.4028/www.scientific.net/aef.5.333.

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It is more and more general of using industrial solid waste as the aggregates in construction materials for non-structural applications. But because of the developments and applications of reinforced blocks masonry structure in the modern masonry structure, especially in the mid-high and high storey buildings, there will be a growing interest of using industrial solid waste to produce high strength concrete small hollow blocks for structural applications. This experiment by mixing the different proportions of rock chips within the range of 30-70% as the replacement for sand prepared high stren

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Gholizadeh, Hamid, and Samad Dilmaghani. "The Study of Mechanical Properties of High Strength Concrete Containing Steel and Polypropylene Fibers." Civil Engineering Journal 4, no. 1 (2018): 221. http://dx.doi.org/10.28991/cej-030981.

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From industrial point of view, recently a great attention has been paid to the use of additives such as steel and polypropylene fibers in concrete and cement products. Investigations have revealed that the addition of steel and polypropylene fibers into normal concrete impart significant improvement in controlling its surface cracking, increase their tensile and flexural strength and durability. Considering the advantages of these additives, high strength concrete samples were produced with different mix design as well as using cement replacement materials such as silica fume according to a we

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Chen, Hai Bin, Hui Dong Lu, Nan Ge, and Xiao Jun Tong. "The Rebound Curve Research of Inspection the High Strength Concrete." Advanced Materials Research 446-449 (January 2012): 3239–42. http://dx.doi.org/10.4028/www.scientific.net/amr.446-449.3239.

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Since the nineteen nineties, high strength concrete technology was developing rapidly in our country. However, high-strength concrete detection technology is relatively backward. According to the characteristic of the pumping concrete in Tangshan area and the requirements of JGJ/T23-2001, The paper adopted representative materials of Tangshan to divide high strength concrete test blocks which strength grade is from C50 to C80 into 4 ages of 14 days, 28 days, 60 days and 90 days, then adopted high strength concrete rebound apparatus to experimental research by the rebound method. At last, the t

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Medeiros, Wallison Angelim, Mateus de Oliveira Soriani, and Guilherme Aris Parsekian. "Innovation in flat-jack application to evaluate modern high-strength hollow concrete block masonry." Construction and Building Materials 255 (September 2020): 119341. http://dx.doi.org/10.1016/j.conbuildmat.2020.119341.

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36

Zha, Xiao Xiong, and Kai Zhang. "The Experiment and Theoretical Analysis of Reusing Waste Cement Mortar." Applied Mechanics and Materials 71-78 (July 2011): 3595–99. http://dx.doi.org/10.4028/www.scientific.net/amm.71-78.3595.

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This paper presents the idea of mixing waste cement mortar into foam concrete block, and gets the foam concrete testing models with the values of dry density at 700 to 1000 kg/m3 , and the compression strength at 0.5-2.5MPa, which are met to foam concrete block standard. At the same time, the power formulas for calculating the dry density and compression strength of concrete cubes doped with waste cement mortar have been brought up, which are coincided with the experiment results well. An initial discussion about microcosmic composition has also been given, which has rather high practical appl

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Bae, Baek-Il, Moon-Sung Lee, Chang-Sik Choi, Hyung-Suk Jung, and Hyun-Ki Choi. "Evaluation of the Ultimate Strength of the Ultra-High-Performance Fiber-Reinforced Concrete Beams." Applied Sciences 11, no. 7 (2021): 2951. http://dx.doi.org/10.3390/app11072951.

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Evaluation of the ultimate strength for the UHPFRC (ultra-high-performance fiber-reinforced concrete) flexural members was conducted. In this study, an experimental program about UHPFRC beams was conducted with the effect of fiber volume fraction, shear span to depth ratio, and compressive strength of matrix as the main variables. Among them, it was found that fiber volume fraction was the variable that had the greatest influence on the ultimate strength. The inclusion of 2% volume fraction steel fiber increases the shear and flexural strength of UHPFRC beams significantly. In particular, stee

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Portela, Jaqueline Damiany, Rômulo Marçal Gandia, Bárbara Lemes Outeiro Araújo, Rodrigo Allan Pereira, and Francisco Carlos Gomes. "Physical, mechanical and thermal behavior of concrete block stabilized with glass fiber reinforced polymer waste." Research, Society and Development 9, no. 11 (2020): e2939119838. http://dx.doi.org/10.33448/rsd-v9i11.9838.

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The Glass Fiber Reinforced Polymer (GFRP) waste despite having excellent physical and mechanical properties is still largely unexplored besides presenting large volume of waste with very low degradability. The use of concrete block presents high resistance to compression, low price high masonry coating ratio by material weight, however high thermal conductivity. Therefore, the study aimed to produce and investigate the effect of adding GRFP residues to concrete blocks due to physical, mechanical and thermal properties. The compositions were made by replacing the fine gravel between 0 to 10% in

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Zhou, Bo, Yuhong Zhao, and Zhe Li. "New type of lightweight high-strength foamed concrete blocks." IOP Conference Series: Earth and Environmental Science 570 (November 12, 2020): 052015. http://dx.doi.org/10.1088/1755-1315/570/5/052015.

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Xiao, Li Guang, Gang Liu, Cun You Yan, and Xiao Xian Xu. "Influence of Polymer and Fiber on the Properties of Special Plaster Mortar for Aerated Concrete." Advanced Materials Research 687 (April 2013): 466–71. http://dx.doi.org/10.4028/www.scientific.net/amr.687.466.

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As a new self-Insulation wall material, the autoclaved aerated concrete block has many advantages such as lightweight, thermal insulation, waste recycling, low energy consumption, friendly to environment, etc. It is gaining favors in the construction market day by day, and has been more and more widely used in construction engineering program. However, aerated concrete block faces disadvantages, e.g. large volume deformation coefficient, high water absorption, low strength, brittle character, etc. When aerated concrete block is used in combination with plain mortar, many problems may appear du

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Hu, Yuqing, Huiguang Yin, Xiaomeng Ding, Shuai Li, and JQ Wang. "Shear behavior of large stud shear connectors embedded in ultra-high-performance concrete." Advances in Structural Engineering 23, no. 16 (2020): 3401–14. http://dx.doi.org/10.1177/1369433220939208.

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In this article, the static shear behavior of large-headed studs embedded in ultra-high-performance concrete was investigated by push-out test and numerical analysis. A total of nine push-out specimens with single and grouped studs embedded in ultra-high-performance concrete and normal strength concrete slabs were tested. In the testing process, only shank failure appeared without cracks occurring on the surface of ultra-high-performance concrete slab when the steel–ultra-high-performance concrete specimens reached ultimate shear capacity. The shear capacity of specimens with large studs embed

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Ghasemipor, Verya, and Saber Piroti. "Experimental Evaluation of the Effect of Water-Cement Ratio on Compressive, Abrasion Strength, Hydraulic Conductivity Coefficient and Porosity of Nano-Silica Concretes." Journal of Applied Engineering Sciences 8, no. 2 (2018): 17–24. http://dx.doi.org/10.2478/jaes-2018-0013.

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Abstract Dams are considered as strategic structures due to their initial role in economic system of the country, therefore, they are expected to be fully functional and powerful. Nano technology could be an effective factor of abrasion and compressive strength, porosity and hydraulic conductivity coefficient of the concrete, thus more scientific research is essential to be carried out on these types of concrete due to their quite modern and high technology. In the current study, the effects of water-cement ratio on compressive and abrasion strength, porosity and hydraulic conductivity coeffic

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Pratikto, Pratikto, and Ginanjar A. "PEMANFAATAN LIMBAH GENTENG BETON PADA PAVING BLOCK." Construction and Material Journal 1, no. 1 (2019): 36–45. http://dx.doi.org/10.32722/cmj.v1i1.1327.

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Paving block merupakan bahan bangunan yang digunakan sebagai pekerasan permukaan jalan, baik jalan untuk keperluan parkir kendaraan ataupun jalan raya, ataupun untuk keperluan dekoratif pada pembuatan taman. Bahan penyusun paving block adalah semen, pasir dan air dengan atau tanpa bahan tambah lainnya. Bahan tambah yang digunakan dapat berupa limbah atau sisa bahan bangunan yang tidak terpakai. Penggunaan limbah bertujuan untuk mendapatkan mutu paving block sesuai standard dan memanfaatkan limbah secara optimal. Limbah genteng beton banyak ditemukan di sekitar bangunan bertingkat yang sudah la

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Hadhood, Abdeldayem, Hamdy M. Mohamed, and Brahim Benmokrane. "Assessing Stress-Block Parameters in Designing Circular High-Strength Concrete Members Reinforced with FRP Bars." Journal of Structural Engineering 144, no. 10 (2018): 04018182. http://dx.doi.org/10.1061/(asce)st.1943-541x.0002173.

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Drozdzol, Krzysztof. "Thermal and Mechanical Studies of Perlite Concrete Casing for Chimneys in Residential Buildings." Materials 14, no. 8 (2021): 2011. http://dx.doi.org/10.3390/ma14082011.

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Chimneys are structures designed to convey exhaust gases from heating devices to the outside of buildings. The materials from which they are made have a great impact on their fire safety, as well as on the safety of the whole building. As current trends in the construction industry are moving towards improving the environmental impact and fire safety, changes to building materials are constantly being introduced. This also applies to the development of chimney technology, as there is still a recognised need for new solutions when it comes to materials used in the production of chimney systems.

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Wu, Bo, Shuyi Zhang, and Yong Yang. "Compressive behaviors of cubes and cylinders made of normal-strength demolished concrete blocks and high-strength fresh concrete." Construction and Building Materials 78 (March 2015): 342–53. http://dx.doi.org/10.1016/j.conbuildmat.2015.01.027.

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Shi, Cai Jun, and Qing Yan Zou. "Use of CO₂ as an Accelerated Curing Agent for Concrete Blocks." Key Engineering Materials 400-402 (October 2008): 81–87. http://dx.doi.org/10.4028/www.scientific.net/kem.400-402.81.

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In this project, a process was developed to cure concrete masonry blocks using CO2. It was found that the strength of concrete mixtures for block manufacture after CO2 curing was close to that after conventional steam curing. A dry pre-conditioning before CO2 curing was very critical to achieve high degree of CO2 curing. The specimen pre-conditioned in the moist environment hydrates more than those pre-conditioned in the dry environment during the pre-conditioning period. However, much less CaCO3 formed in the former that that in the latter after the CO2 curing. Thus, the CO2 curing is mainly

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HavanjeDinakar, Raghavendra Prasad, Pavan, Vishal Gadgihalli, and Ramesh. "EXPERIMENTAL STUDY ON THE STRENGTH DEVELOPMENT ON CONCRETE BY PARTIAL REPLACEMENT OF COARSE AGGREGATES BY WASTED TRUCK TYRE PIECES." International Journal of Research -GRANTHAALAYAH 5, no. 11 (2017): 414–24. http://dx.doi.org/10.29121/granthaalayah.v5.i11.2017.2375.

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Wasted Truck Tyres can be used as an alternative for concrete coarse aggregate. The used tyres of truck are properly cutted and different ratios can be added to concrete blocks. The main components of modern tyres are synthetic rubber, natural rubber, fabric and wire, along with carbon black and chemical compounds. In the present paper, Truck Tyres are used as conventional coarse aggregate in concrete for high strength (M50 Grade) concrete for every incremental of 25% replacement up to 100% is done. Slump cone test, Vee-Bee consistometer test and Compaction factor test are conducted to find fr

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Chuc, Nguyen Trong, Tang Van Lam, and Boris I. Bulgakov. "Designing the Composition of Concrete with Mineral Additives and Assessment of the Possibility of Cracking in Cement-Concrete Pavement." Materials Science Forum 931 (September 2018): 667–73. http://dx.doi.org/10.4028/www.scientific.net/msf.931.667.

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Cement-concrete pavement not only has a long service life even at high loads but also has competitive production costs and fewer significant maintenance costs. The concrete road surfaces, thus, are rather economical. In this article, the Vietnamese Standard TCVN 9382 - 2012 was used to determine the heavyweight concrete composition for rural road construction. Assessment of the crack appearance in the concrete block body was made by the temperature field analysis, the thermal stress and cracking index. The conducted studies' result provided with the possibility of obtaining heavyweight concret

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Oliveira, F. L. De, and J. B. De Hanai. "Axial compression behavior of concrete masonry wallettes strengthened with cement mortar overlays." Revista IBRACON de Estruturas e Materiais 1, no. 2 (2008): 158–70. http://dx.doi.org/10.1590/s1983-41952008000200003.

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This paper presents the results of a series of axial compression tests on concrete block wallettes coated with cement mortar overlays. Different types of mortars and combinations with steel welded meshes and fibers were tested. The experimental results were discussed based on different theoretical approaches: analytical and Finite Element Method models. The main conclusions are: a) the application of mortar overlays increases the wall strength, but not in a uniform manner; b) the strengthening efficiency of wallettes loaded in axial compression is not proportional to the overlay mortar strengt

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