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1

Pomeroy, C. D. "Properties of fresh concrete." Materials and Structures 24, no. 2 (1991): 159. http://dx.doi.org/10.1007/bf02472477.

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2

Gencel, Osman, Turhan Bilir, Zeynep Bademler, and Togay Ozbakkaloglu. "A Detailed Review on Foam Concrete Composites: Ingredients, Properties, and Microstructure." Applied Sciences 12, no. 11 (2022): 5752. http://dx.doi.org/10.3390/app12115752.

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With the development of new cement-based raw materials, foaming agents and fillers used for special applications of foam concrete, the use of foam concretes has become widespread. Foam concrete is a type of concrete that stands out with its lightness, waste potential, controlled low strength, thermal insulation, acoustics performance, and durability. The knowledge base is still developing for this particular building material. This article describes in detail the fresh, hardened, and physical properties of foam concrete. The properties of materials such as cement, aggregate, foam, and fiber us
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3

Mohammed, Tarek Uddin, Tanvir Ahmed, Shibly Mostafiz Apurbo, et al. "Influence of Chemical Admixtures on Fresh and Hardened Properties of Prolonged Mixed Concrete." Advances in Materials Science and Engineering 2017 (2017): 1–11. http://dx.doi.org/10.1155/2017/9187627.

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Effects of different chemical admixtures on fresh and hardened properties of prolonged mixed concrete and their cost-effectiveness were investigated. Influence of sand to aggregate volume ratio, cement content, and use of chilled mixing water on the properties of prolonged mixed concrete was studied as well. Different concrete mixtures were prepared using five different types of chemical admixture (one water reducer based on lignosulfonate and four superplasticizers based on sulfonated naphthalene polymer, polycarboxylic ether, second-generation polycarboxylic ether polymer, and organic polyme
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Davidová, Vendula, Tomáš David, and Pavel Reiterman. "The Influence of Sludge Water on the Properties of Fresh and Hardened Concrete." Materials Science Forum 1070 (October 13, 2022): 231–36. http://dx.doi.org/10.4028/p-n4oi0e.

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Reducing waste from industrial production is a major issue of our time. The concrete industry is looking for ways to deal with the fresh concrete slurry waste that is produced during production. Worldwide, this sludge is often filtered and used for further application. However, in many concrete plants, such a facility is not economically beneficial and therefore solutions are being looked for to recover the slurry water without major modifications. This article deals with the recovery of sludge water in its fresh state immediately after its generation from concrete production. The tested concr
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5

Agbi, G. G., O. Z. Tachere, and H. O. Juwah. "Evaluation of the impact of chemical admixtures on the compressive strength properties of concrete." Applied Journal of Physical Science 3, no. 1 (2021): 72–80. http://dx.doi.org/10.31248/ajps2021.051.

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This study was carried out to evaluate the effect of chemical admixtures on the compressive strength of concretes. The concretes were produced with the concrete mix ratio of 1:2:4, while water to cement (w/c) ratios of 0.35, 0.4, 0.45, 0.5 and 0.55 were adopted. Different concrete mixtures were produced using two chemical admixtures (hydroxycarboxylic acid and MasterRheobuild 1100) applied at the rate of 1.3% (weight of the cement), during the production process. Laboratory results of the fine aggregate used for the concrete production showed that it was well graded met international standards
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6

Pandey, Rohit, and Rahul Sharma. "Influence of Fresh Concrete Properties on the Mechanical Properties of Hardened Concrete." International Journal for Research in Applied Science and Engineering Technology 11, no. 5 (2023): 1771–74. http://dx.doi.org/10.22214/ijraset.2023.51801.

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Abstract: Characteristics of hard concrete such as compressive strength are significantly affected by freshly prepared concrete properties. The properties of fresh concrete affect the future performance of structures. Compressive strength is found to be major parameter indicating condition of any concrete structures. In this work affect of basic properties such ratio of cement to aggregate; water to cement ratio, workability and density of fresh concrete on the compressive strength is evaluated and a regression model is developed.
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7

Chen, How-Ji, Neng-Hao Shih, Chung-Hao Wu, and Shu-Ken Lin. "Effects of the Loss on Ignition of Fly Ash on the Properties of High-Volume Fly Ash Concrete." Sustainability 11, no. 9 (2019): 2704. http://dx.doi.org/10.3390/su11092704.

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This study presents the experimental results of fresh and hardened properties of concrete incorporating high-volume fly ash (HVFA). Two kinds of low-calcium fly ash with loss on ignition (LOI) of 5% and 8% were used as replacement for cement and/or fine aggregate of 0% (control), 20%, 40%, 50%, 60% and 80% by weight of the total cementitious materials. The properties of fresh concrete tested included the slump, air content, unit weight and setting time; those of hardened concrete determined included compressive strength, modulus of elasticity, flexural strength and drying shrinkage. Test resul
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8

Kovler, Konstantin, and Nicolas Roussel. "Properties of fresh and hardened concrete." Cement and Concrete Research 41, no. 7 (2011): 775–92. http://dx.doi.org/10.1016/j.cemconres.2011.03.009.

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9

Lavado, J., J. Bogas, J. de Brito, and A. Hawreen. "Fresh properties of recycled aggregate concrete." Construction and Building Materials 233 (February 2020): 117322. http://dx.doi.org/10.1016/j.conbuildmat.2019.117322.

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10

Kurian Joseph, Shilu, and Annie Sonia Xavier. "Effect of Starch Admixtures on Fresh and Hardened Properties of Concrete." International Journal of Scientific Engineering and Research 4, no. 3 (2016): 27–30. https://doi.org/10.70729/ijser15705.

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11

He, Xi Xi, and Qing Wang. "Literature Review: Properties of Silica Fume Concrete." Advanced Materials Research 1004-1005 (August 2014): 1516–22. http://dx.doi.org/10.4028/www.scientific.net/amr.1004-1005.1516.

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Silica fume (SF) modifies interfacial transition zone between cement paste and aggregate at the micro level. Properties of both fresh and hardened silica fume concrete are affected significantly compared to normal concrete. Experiments indicate that concretes become more cohesive and less prone to segregation in the presence of silica fume, moreover, performance of water demand, setting of time, plastic shrinkage varies respectively from concretes without silica fume. Obvious mechanical enhancement of concrete is observed in the aspects of compressive strength tensile strength, elastic modulus
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12

Qadri, Muhammad Ahmed, Huzaifah Hameed, and Osama Bhutta. "Fresh and Hardened Properties of Styrene Butadiene Rubber (SBR) Modified Concrete." European Journal of Engineering Research and Science 5, no. 4 (2020): 457–61. http://dx.doi.org/10.24018/ejers.2020.5.4.1883.

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The durability of concrete has been studied ever since it was first used. Researchers have incorporated several materials to make concrete strong and durable. This research focuses on the infusion of styrene butadiene rubber polymer (SBR) as a partial replacement of cement and studies its effects on fresh and hardened properties of concrete. Samples were prepared using partial replacement of SBR in proportions of 0%, 5%, 10% and 20%. Results showed that the fresh density of concrete decreased with the addition of SBR whereas the trends of workability showed an increase with cement replacement.
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Qadri, Muhammad Ahmed, Huzaifah Hameed, and Osama Bhutta. "Fresh and Hardened Properties of Styrene Butadiene Rubber (SBR) Modified Concrete." European Journal of Engineering and Technology Research 5, no. 4 (2020): 457–61. http://dx.doi.org/10.24018/ejeng.2020.5.4.1883.

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The durability of concrete has been studied ever since it was first used. Researchers have incorporated several materials to make concrete strong and durable. This research focuses on the infusion of styrene butadiene rubber polymer (SBR) as a partial replacement of cement and studies its effects on fresh and hardened properties of concrete. Samples were prepared using partial replacement of SBR in proportions of 0%, 5%, 10% and 20%. Results showed that the fresh density of concrete decreased with the addition of SBR whereas the trends of workability showed an increase with cement replacement.
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14

Sharma, Aman. "Effect of Wollastonite Mineral on Fresh and Mechanical Properties of Concrete." International Journal for Research in Applied Science and Engineering Technology 9, no. 10 (2021): 496–500. http://dx.doi.org/10.22214/ijraset.2021.38447.

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Abstract: The wollastonite mineral are the main source of solid-state reaction from limestone and silica sand. Wollastonite is used as replacement of both sand and cement depending on size of wollastonite. Present study will provide better understanding of mechanical and durability properties of concrete in which cement is partially replaced with wollastonite. The present paper would contribute to the efforts being made in the field of concrete technology towards development of concretes possessing good strength and durability properties along with economic and ecological advantage. Based on t
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15

Laskar, Dr Abdullah Ahmed, Rahul Bagaria, Aman Sharma, Sonam Gupta, and Ajay Sharma. "Fresh Concrete Properties Required for Vertical Slip-form Concrete." International Journal for Research in Applied Science and Engineering Technology 12, no. 10 (2024): 630–37. http://dx.doi.org/10.22214/ijraset.2024.64647.

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Abstract: The guidelines available in the present concrete mix design standard IS-10262-2019 [2] are silent about the special mix proportion criteria for slip-form concrete. The slip-form concrete is subjected to dynamic loads in the fresh state due to the movement of the slip-form panel over the fresh concrete. In current practice, particularly in power plant industries where RCC chimneys are required, concrete mix design is often carried out by a third party based solely on hardened concrete design strength criteria. However, such proportioning guidelines as per IS-10262-2009 [2] are suitabl
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16

Bergmann, Ana Claudia, Gustavo Savaris, Carlos Eduardo Tino Balestra, and Lucia Bressiani. "CONCRETOS AUTOADENSÁVEIS E CONVENCIONAIS: ANÁLISE DAS PROPRIEDADES EM ESTADO FRESCO E ENDURECIDO." REEC - Revista Eletrônica de Engenharia Civil 15, no. 2 (2020): 167–78. http://dx.doi.org/10.5216/reec.v15i2.50695.

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RESUMO: Os concretos autoadensáveis destacam-se por suas características essenciais: capacidade de preenchimento de fôrmas, habilidade passante e resistência à segregação, permitindo assim o aumento da qualidade de peças estruturais de concreto, assim como a otimização de sua execução. Contudo, para obtenção de suas características essenciais, um fator é imprescindível trata da utilização de materiais finos, com o objetivo de controlar os efeitos negativos de segregação e exsudação à que o concreto fresco é suscetível a apresentar. Neste contexto, o presente trabalho tem por objetivo comparar
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17

Shaikh, Faiz. "Mechanical and Durability Properties of Green Star Concretes." Buildings 8, no. 8 (2018): 111. http://dx.doi.org/10.3390/buildings8080111.

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This paper presents mechanical and durability properties of green star concretes. Four series of concretes are considered. The first series is control concrete containing 100% ordinary Portland cement, 100% natural aggregates and fresh water. The other three series of concretes are green star concretes according to Green Building Council Australia (GBCA), which contain blast furnace slag, recycled coarse aggregates and concrete wash water. In all above concretes compressive strength, indirect tensile strength, elastic modulus, water absorption, sorptivity and chloride permeability are measured
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18

Meyer, Max, Amadeus Langer, Max Mehltretter, et al. "Image-based Deep Learning for the time-dependent prediction of fresh concrete properties." ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences X-2-2024 (June 10, 2024): 145–52. http://dx.doi.org/10.5194/isprs-annals-x-2-2024-145-2024.

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Abstract. Increasing the degree of digitisation and automation in the concrete production process can play a crucial role in reducing the CO2 emissions that are associated with the production of concrete. In this paper, a method is presented that makes it possible to predict the properties of fresh concrete during the mixing process based on stereoscopic image sequences of the concretes flow behaviour. A Convolutional Neural Network (CNN) is used for the prediction, which receives the images supported by information on the mix design as input. In addition, the network receives temporal informa
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19

Ogunbode, E. B., Y. Y. Garba, B. Musa, M. Oliver, N. S. Daniya, and C. U. Ekekezie. "Effects of Kenaf Fibre on Fresh Properties of Fibrous Concrete." Environmental Technology and Science Journal 13, no. 1 (2022): 13–27. http://dx.doi.org/10.4314/etsj.v13i1.2.

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As a result of global quest for sustainable materials to achieve a bio based economy and low carbon foot print environment, the use of fibre to produce fibrous concrete composite has continuously received significant research attention. While several researches have been conducted on metallic and synthetic fibrous concretes, they exhibit several unavoidable drawbacks and bio fibrous concrete has proven to be a better alternative. Therefore, the effect of fibre volume fraction and fibre length on fresh properties of concrete was investigated. The bio fibrous concrete mix was made of six differe
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20

Kabir, Aliyu, Adamu Lawan, Jibrin Kaura, and Ibrahim Aliyu. "Effect of Calcite Precipitation on Properties of Fresh and Hardened Laterized Concrete." Nigerian Journal of Engineering 30, no. 3 (2023): 16. http://dx.doi.org/10.5455/nje.2023.30.03.03.

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Reduction in strength and durability is the limitation for use on laterized concrete in various engineering applications.This research focuses on the effect of calcite precipitation on the strength and durability of laterized concrete. The laterized concrete sample was prepared by fine aggregate replacement with laterite at 0 %, 10 %, 20 %, 30 %, and 40 % by weight of fine aggregate. A prescribed concrete mix proportion of 1:1.5:3 and a water-to-cement ratio of 0.5 was used to prepare the concrete. At each level of replacement, Sporosarcina Pasteurii bacteria at concentrations of 0, 1.5 x 108,
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21

Haddadou, Naima, Rabah Chaid, Youcef Ghernouti, Naima Adjou, and Malik Bouzoualegh. "Fresh and hardened properties of self-compacting concrete with different mineral additions and fibers." Journal of Building Materials and Structures 2, no. 2 (2016): 41–50. https://doi.org/10.5281/zenodo.242152.

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In this work, several reinforced self-compacting concretes were prepared by using three types of fibers made of steel, polypropylene and glass, and three different types of mineral additions (marble powder, metakaolin and limestone powder). The water to cement ratio was kept constant at 0.34 and fibers were used in combination, keeping the total fiber content constant at 60 kg/m3. Slump flow diameter, L-Box, stability and air content were performed to assess the fresh properties of the concrete. Compressive strength, flexural strength, splitting tensile strength and ultrasonic pulse velocity o
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22

Křížová, Klára, and Petr Novosad. "Verification of Rheological Properties of Self-Compacting Concrete with Reinforcement." Solid State Phenomena 249 (April 2016): 41–45. http://dx.doi.org/10.4028/www.scientific.net/ssp.249.41.

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The paper presents results of mechanical and physical tests of self-compacting concrete with fibre reinforcement. Self-compacting concretes belong to special types of concretes with filling ability without invoking external dynamic forces. Especially high storage rate and concrete access even in densely stored reinforcement, high homogenisation, low water-cement ratio and exclusion of external vibrations are benefits of SCC concretes. The highest risks that must be considered when designing this type of the concretes are their resistance to segregation, sedimentation, blocking and bleeding. Se
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23

Mahmood, Hersh F., Hooshang Dabbagh, and Azad A. Mohammed. "Fresh, Mechanical, and Durability Properties of Concrete Contains Natural Material as an Admixture, an Overview." Journal of Studies in Science and Engineering 2, no. 3 (2022): 66–86. http://dx.doi.org/10.53898/josse2022235.

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Nowadays, the performance criteria for concrete construction are moving toward eco-efficiency, which is a method of producing highly durable and environmentally friendly concrete while minimizing both manufacturing costs and environmental load. Admixtures are commonly used in all concrete construction; however, some of them are harmful to human health and cause leaching, which is responsible for environmental pollution. On this principle, one of the eco-efficiency method's techniques is to use natural materials as additives in concrete. The paper continues to discuss the experi-mental data gen
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Sevim, Umur Korkut, and Yakup Tümen. "Strength and fresh properties of borogypsum concrete." Construction and Building Materials 48 (November 2013): 342–47. http://dx.doi.org/10.1016/j.conbuildmat.2013.06.054.

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25

Pomeroy, C. D. "Rilem colloquium on properties of fresh concrete." Cement and Concrete Composites 12, no. 4 (1990): 305–6. http://dx.doi.org/10.1016/0958-9465(90)90011-l.

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26

Ghafoori, Nader, Aderemi Gbadamosi, Hamidou Diawara, and Ariful Hasnat. "Influence of Admixture Source on Fresh Properties of Self-Consolidating Concrete." Materials 17, no. 13 (2024): 3215. http://dx.doi.org/10.3390/ma17133215.

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The study presented herein was intended to (1) compare the optimum (minimum) dosage requirements of four different sources of polycarboxylate-based high-range water-reducing admixtures (HRWRAs) and viscosity-modifying admixtures (VMAs) in attaining slump flows of 508 mm, 635 mm, and 711 mm, and a visual stability index (VSI) of 0 (highly stable concrete) or 1 (stable concrete), and (2) assess the flowability/viscosity, stability, passing ability, and filling ability of the resulting self-consolidating concretes. The test results showed that the optimum dosage requirements to obtain a uniform s
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27

Otieno, Mike, and Esina Ndoro. "Utilization of kimberlite tailings as aggregates in concrete – strength and selected durability properties." MRS Advances 5, no. 25 (2020): 1259–66. http://dx.doi.org/10.1557/adv.2020.153.

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AbstractThe feasibility of using kimberlite tailings as aggregates in concrete was assessed. Compressive strength and selected durability tests were carried out on concretes made using various replacement levels (0, 40, 60 and 100%) fine and/or coarse blended crushed andesite and kimberlite tailings as aggregates. A w/b ratio of 0.50 and a CEM I 52.5R were used. The results show that the kimberlite tailings as aggregates have a relatively high water demand which was manifested as a reduction in workability of the fresh concretes with kimberlite tailings as a proportion of either fine and/or co
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28

Motar, Shahad B., and Hadeel K. Awad. "Behavior of Steel-Fiber Reinforced Lightweight Self-Compacting Concrete Containing LECA after the Exposure to Internal Sulfate Attack." E3S Web of Conferences 427 (2023): 02007. http://dx.doi.org/10.1051/e3sconf/202342702007.

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For many years, lightweight concretes (LWC) have been utilized successfully in the construction of buildings because of their low specific weight, high thermal insulation capacity, and sound insulation. The development that led to lightweight self-compacting concrete (LWSCC) is a significant step forward in recent years. These concrete chains self-compacting concrete's beneficial properties with lightweight concrete. The purpose of this experimental investigation is to determine how the internal sulfates attack effect fresh and hard properties of lightweight self-compacting concrete (LWSCC) ma
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29

Sedlmajer, Martin, and Jiri Zach. "Properties of Lightweight Concretes Made of Aggregate from Recycled Glass." Solid State Phenomena 249 (April 2016): 67–72. http://dx.doi.org/10.4028/www.scientific.net/ssp.249.67.

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The paper describes the basic properties of newly developed lightweight cement concrete containing lightweight aggregate based on recycled glass. The basic properties of concrete were observed, i.e. bulk density in fresh and hardened state and compressive strength. Given the low bulk density of the concretes being designed, thermal conductivity is also observed in order to assess the options off improving thermal insulation properties in a structure where such concrete may be used. Thermal insulation properties are the primary parameter in the implementation of floor or ceiling structure compo
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30

Umesh Jhakal, Sunil Thakur, and Sumesh Jain. "Analyzing the impact of recycled aggregate and waste glass powder on the fresh and mechanical properties of concrete." Environment Conservation Journal 25, no. 4 (2024): 1059–70. https://doi.org/10.36953/ecj.28142861.

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This study examines the effects of recycled aggregate and waste glass powder on concrete's fresh and mechanical characteristics. This investigation used recycled aggregate and waste glass powder content of 0%, 10%, 20%, 30%, 40%, and 50% to partially replace coarse and fine aggregate, respectively. The fresh concrete properties were assessed by conducting tests for slump, density, and compacting factor on six different concrete mix proportions. Additionally, we evaluated the concrete's mechanical properties, such as its flexural, splitting tensile, and compressive strength, on the 7th, 14th, a
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31

Hubáček, Adam, and Rudolf Hela. "Concrete with High Content of Fly Ash Intended for Constructions with Long Durability." Solid State Phenomena 249 (April 2016): 21–27. http://dx.doi.org/10.4028/www.scientific.net/ssp.249.21.

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The article deals with theme of high fly ash content concretes intended for long life constructions. Considering the still growing consumption of fly ash in construction concretes it is a live theme in the Czech Republic and abroad as well. The emphasis will be laid namely on characteristics and requirements for fresh concrete intended for construction of these specific concrete constructions. They are for instance waterproof constructions, tunnel linings, concretes for bridge and road constructions etc. Also the hardened concrete properties like compressive strength, resistance to pressure wa
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32

Bukvić, Olivera, Vlastimir Radonjanin, Mirjana Malešev, and Mirjana Laban. "Basic fresh-state properties of extrusion-based 3D printed concrete." Gradjevinski materijali i konstrukcije 63, no. 4 (2020): 99–117. http://dx.doi.org/10.5937/grmk2004099b.

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This paper aims at reviewing the basic properties of fresh-state extrusion-based three-dimensional (3D) printed concrete in order to explain the specific properties of this construction technology. The review was conducted using the bottom-up approach. The most recent literature in the field of extrusion-based concrete printing was used as a starting point, while additional papers were included through screening the references of relevant papers. Based on the inclusion criteria, review and experimental papers containing data on fresh-state 3D printed concrete properties were included, as well
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33

De Schutter, Geert, Imene Abidi, Eleni Korda, et al. "Active Control of Properties of Fresh and Hardening Concrete." RILEM Technical Letters 8 (September 18, 2024): 198–203. http://dx.doi.org/10.21809/rilemtechlett.2023.200.

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Concrete mixtures have an optimized mix design in view of attaining desired properties. However, after mixing, during further processing, it is typically not possible to further adjust the performance of the fresh and hardening concrete. A new and emerging approach is to actively control the concrete properties by means of responsive particles or polymers triggered by an externally applied signal. Active control of properties of concrete refers to the concept of on- demand changes of one or more properties of the concrete after mixing by triggering a response to one or more of the constituents
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Choi, Hong-Beom, Jin-O. Park, Tae-Hyun Kim, and Kyeo-Re Lee. "Mechanical Properties of Basalt-Based Recycled Aggregate Concrete for Jeju Island." Materials 14, no. 18 (2021): 5429. http://dx.doi.org/10.3390/ma14185429.

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Recycled aggregate is essential to protect Jeju Island’s natural environment, but waste concrete, including porous basalt, is a factor that lowers the quality of recycled aggregate. Therefore, an experiment was conducted to analyze the properties of concrete application of basalt-based recycled aggregate (B-RA) through quality improvement. The absorption of the B-RA ranged from 3–5%; restricting its absorption to less than 3% was challenging owing to its porosity and irregular shape. However, the increase in the solid volume percentage of the concrete when replacing 25 or 50% of fresh basalt a
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35

Khan, Muhammad Ilyas, Mati Ullah Shah, and Muhammad Usman. "Experimental Investigation of Concrete Properties using Locally available Coarse Aggregates in Punjab, Pakistan." NUST Journal of Engineering Sciences 15, no. 1 (2022): 26–29. http://dx.doi.org/10.24949/njes.v15i1.655.

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Concrete is the most widely used construction material worldwide. The concrete mainly consists of cement, water, fine aggregate(FA), and coarse aggregate(CA).CA is the main constituent of concrete in terms of weight and volume. The properties of CA can affect the fresh and mechanical properties of concrete. In the present study, CA from three different sources (Sargodha, Mangla, and Margalla) are used in three different mixes of grade M-20 (1:1.5:3) concrete. The FA aggregate source (Chenab) is kept the same in all three mixes with constant w/c=0.5. It is observed that the fresh properties of
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36

Combrinck, Riaan, Marnu Meyer, and William P. Boshoff. "Modelling the cracking of fresh concrete." MATEC Web of Conferences 364 (2022): 02016. http://dx.doi.org/10.1051/matecconf/202236402016.

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The cracking of fresh concrete, while still in a plastic state, includes both plastic settlement and plastic shrinkage cracking, which starts once the concrete is cast to around the final setting time. The cracking process is complex and is influenced by numerous factors which include the climate, mix proportions, element geometry and construction procedures. Preventing these cracks therefore remains a problem in practice. One of the reasons for this is the lack of a model that can be used to determine the location, timing and severity of the cracking before the cracking occurs. The main chall
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37

Kazanskaya, Liliya, and Olga Smirnova. "Influence of mixture composition on fresh concrete workability for ballastless track slabs." E3S Web of Conferences 157 (2020): 06022. http://dx.doi.org/10.1051/e3sconf/202015706022.

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There are several factors that affect the fresh concrete workability: water demand and composition of Portland cement, properties of fine and coarse aggregates, presence of superplasticizer and others admixtures, etc. Influence of quantity and fineness of ground quartz additives as well as polycarboxylate-based superplasticizer amount on workability of fresh concrete was studied in the paper. The properties of fresh mixture (slump) and hardened concrete (compressive strength at the age of 24 hours, 28 and 360 days) were estimated. Enhancing the fresh concrete workability using fine ground quar
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38

A K, Dasarathy, M. Tamil Selvi, D. Leela, and S. Kumar. "Self Compacting Concrete – an Analysis of Properties using Fly Ash." International Journal of Engineering & Technology 7, no. 2.24 (2018): 135. http://dx.doi.org/10.14419/ijet.v7i2.24.12018.

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Self compacting concrete has ability involves not only high deformability of paste or mortar, but also resistance to segregation between coarse aggregate and mortar when the concrete flows through the confined zone of reinforcing bars. Several researchers have employed the different methods to achieve self- compactability. In recent years, self-compacting concrete (SCC) has gained wide use for placement in congested reinforced concrete structures with difficult casting conditions. For such applications, the fresh concrete must possess high fluidity and good cohesiveness. The initial results of
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39

Bashandy, Alaa Ali, Noha M. Soliman, and Mahmoud Hamdy Abd Elrahman. "Recycled Aggregate Self-curing High-strength Concrete." Civil Engineering Journal 3, no. 6 (2017): 427–41. http://dx.doi.org/10.28991/cej-2017-00000102.

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The use of recycled aggregates from demolished constructions as coarse aggregates for concrete becomes a need to reduce the negative effects on the environment. Internal curing is a technique that can be used to provide additional moisture in concrete for more effective hydration of cement to reduce the water evaporation from concrete, increase the water retention capacity of concrete compared to the conventionally cured concrete. High strength concrete as a special concrete type has a high strength with extra properties compared to conventional concrete. In this research, the combination of p
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Tran, Vu An, Le Anh Tuan Bui, Duc-Cuong Nguyen, and Hoang Anh Nguyen. "Effect of fiber type on performance of fiber reinforced concrete applied for hydraulic construction." CTU Journal of Innovation and Sustainable Development 16, Special issue: ICCEE (2024): 51–57. http://dx.doi.org/10.22144/ctujoisd.2024.281.

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This study aims at evaluating effect of fiber types on comprehensive property of a practical fiber reinforced concrete (FRC) applied for hydraulic construction. Three fiber types including polypropylene, glass, and steel fiber were used to replace concrete volume at 0.3 vol.%. Experimental results illustrated that when compared with the reference concrete, the fiber reinforced concretes with steel or glass fiber had comparable or slight changes on the fresh properties. But, addition of polypropylene fiber induced the fresh FRC with decreased slump flow and significantly increased air entrained
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Jagdeep and Nitin Verma. "Fresh and Hardened Properties of SCC Incorporating Rice Husk Ash and Sugarcane Bagasse Ash." E3S Web of Conferences 509 (2024): 01002. http://dx.doi.org/10.1051/e3sconf/202450901002.

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Self-compacting concrete represents a unique type of concrete that achieves self-compression through its mass, eliminating the need for external vibrations. The mechanical characteristics of self-compacting concrete can be enhanced by incorporating agricultural waste materials as partial substitutes for cement. In this experimental study, a graded M30 concrete mix was employed to produce self-compacting concrete by replacing cement with 6, 8, 10, 12, and 14% of sugarcane bagasse ash and rice husk ash. To assess the concrete's properties, both in its fresh and hardened states, several tests wer
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Abdollahnejad, Zahra, Mohammad Mastali, Mahroo Falah, Tero Luukkonen, Mehran Mazari, and Mirja Illikainen. "Construction and Demolition Waste as Recycled Aggregates in Alkali-Activated Concretes." Materials 12, no. 23 (2019): 4016. http://dx.doi.org/10.3390/ma12234016.

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The growth of global construction has contributed to an inevitable increase in the amount of construction and demolition (C&D) waste, and the recycling of C&D waste as aggregates in concrete is receiving increased interest, resulting in less demand for normal aggregates and bringing a potential solution for the landfilling of wastes. Recently, several studies have focused on the use of C&D waste in alkali-activated concrete to move one step closer to sustainable concretes. This paper focuses on the main mechanisms of using C&D waste in the resulting physical, mechanical, and du
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Hang, Mei Yan, Ying Jing Lan, Pei Yu Zhang, and Li Ming Zhang. "The Research of Mud Influence on Properties of Concrete." Key Engineering Materials 629-630 (October 2014): 462–66. http://dx.doi.org/10.4028/www.scientific.net/kem.629-630.462.

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Abstract: The same amount of mixture ratio of cement, replacing a part of fly ash with a certain amount of mud to research about the workability of fresh concrete and the effect of the mechanical and shrinkage properties of hardened concrete. Test's results show: The different kinds of mud lead that the fluidity of the fresh concrete and the strength of hardened concrete are different. The influence of sand mud is lighter than planting mud on the fluidity and strength of concrete. The compressive strength of concrete decreases and the early shrinkage increase with an increase of mud replaced t
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Saidi, Maroua, Kazem Jadidi, and Moses Karakouzian. "Assessment of Quality of Fresh Concrete Delivered at Varying Temperatures." CivilEng 3, no. 1 (2022): 135–46. http://dx.doi.org/10.3390/civileng3010009.

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Concrete is increasingly utilized in the construction field in Southern Nevada. This area has an arid and hot summer and freezing cold winter conditions. These extreme conditions affect the properties of fresh concrete, which can cause cracking. Hot weather conditions may adversely affect both fresh and hardened concrete properties. Even though practices can minimize the detrimental effects, good quality control of fresh concrete, from mixing to finishing, is crucial under hot weather conditions. The objective of the present study is to evaluate the seasonal consistency of concrete quality, co
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Bacarji, Edgar, V. C. Marques, and Romildo Dias Toledo Filho. "Self-Compacting and Conventional Concrete with Mineral Waste: Fresh and Hardened State Properties." Key Engineering Materials 517 (June 2012): 547–55. http://dx.doi.org/10.4028/www.scientific.net/kem.517.547.

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Environmental preservation has been a theme debated in virtually every country in the world. Many measures are being taken to reduce the environmental impact due to unplanned development. Growing environmental restrictions to the exploitation of sand from riverbeds have resulted in a search for alternative materials to produce fine aggregates, particularly near to larger metropolitan areas. Artificial fine aggregates then appear as an attractive alternative to natural fine aggregates for concrete. This work is the final part of a study about the use of residues in concretes. Conventional Concr
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Cui, Shao Bo, and Feng Wei He. "Study of Applied Properties of Aminosulphonic Acid Based Superplasticizer." Applied Mechanics and Materials 52-54 (March 2011): 1650–55. http://dx.doi.org/10.4028/www.scientific.net/amm.52-54.1650.

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The adaptability to cement pastes and fresh concretes of aminosulphonic acid-based superplasticizer (ASP) and its water reducing ratio and compatibility with Naphthalene based superplasticize (FDN) have been investigated at a given content of ASP. The adaptability to cement pastes was determined by measuring the fluiditiy with time of superplasticized cement pastes, and the adaptability to fresh concretes and compatibility with FDN was evaluated by measuring the fluidity, bleeding, and hardening and mechanical property et.al. of fresh concretes with ASP. The results show that the fluidities at
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Gołaszewski, Jacek, Grzegorz Cygan, Tomasz Ponikiewski, and Małgorzata Gołaszewska. "Cements with calcareous fly ash as component of low clinker eco-self compacting concrete." Open Engineering 9, no. 1 (2019): 196–201. http://dx.doi.org/10.1515/eng-2019-0024.

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AbstractThe main goal of the presented research was to verify the possibility of obtaining ecological self-compacting concrete of low hardening temperature, containing different types of cements with calcareous fly ash W as main component and the influence of these cements on basic properties of fresh and hardened concrete. Cements CEM II containing calcareous fly ash W make it possible to obtain self-compacting concrete (SCC) with similar initial flowability to analogous mixtures with reference cement CEM I and CEM III/B, and slightly higher, but still acceptable, flowability loss. Properties
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Ibrahim, Yahaya, Aminu Mustafa, and Saleh Samaila. "Effect of Partial Replacement of Sand with Quarry Dust on the Properties of Concrete." European Journal of Advances in Engineering and Technology 5, no. 6 (2018): 391–95. https://doi.org/10.5281/zenodo.10709282.

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<strong>ABSTRACT </strong> The continuous increase in the cost of river sand and the fear of environmental and ecological distortionobligethe need to find materials that can replace river sand in the production of concrete. The purpose of this research is to study the properties of the fresh and hardened concrete made using quarry dust as fine aggregate to replace some portion of sand. In this research, the mixing proportion of Cement: Fine aggregate: Stone (gravel) is equal to 1:2:4 by weight and Water/Cement (W/C) ratio equal to 0.60. The result of compressive strength at 28 days using quarr
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Djebri, Noura, Zine El Abidine Rahmouni, Nor Elhouda Djiab, and Fayza Haffaf. "The Effect of the Use of Residues (Metallic Shavings) in the Formulation of Self-Compacting Concrete in Fresh and Hardened State." Annales de Chimie - Science des Matériaux 46, no. 6 (2022): 301–6. http://dx.doi.org/10.18280/acsm.460603.

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Self-Compacting Concretes (SCCs) have brought promising insight into the concrete industry to generate environmental impact and reduce costs. the absence of SCC vibrations generates a significant reduction in noise pollution in urban areas, ease of implementation, possibility of concreting heavily reinforced areas or areas with complex geometry and obtaining better quality concrete on the one hand, reduction of working time on site, of personnel during installation and reduction of the costs of industrial processes, on the other hand. Metal chips resulting from the modification of metal parts
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Algalawi, Nada Mahdi, and Hadel Ibraheem Ahmad. "Effect of Local Feldspar on the Properties of Self Compacting Concrete." Journal of Engineering 20, no. 09 (2023): 1–13. http://dx.doi.org/10.31026/j.eng.2014.09.10.

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This research of using Feldspar in the production self compacting concrete (SCC) ( 5,10,15 )% as partial replacement by weight of cement .In this research some of fresh properties of SCC ( slump flow used V-funnel test and filling ability used ( U- box test ) for concrete mixes and also some of the harden properties of SCC ( compressive and flexural tests ). The research results showed that negative effect of Feldspar on the fresh properties of self compacting concrete but the positive effect of Feldspar on the harden properties of self compacting concrete .
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