Analysis of Concrete Strength Versus Water-Cement Ratio Relationship

10.14359/1944 ◽  
1990 ◽  
Vol 87 (5) ◽  
Keyword(s):  
Concrete Strength ◽  
Cement Ratio ◽  
Water Cement Ratio

GGBS Use in Concrete as Cement Constituent: Strength Development and Sustainability Effects – Part 1

2021 ◽  
pp. 1-41
Author(s):  
Haotian Fan ◽  
Ravindra K. Dhir ◽  
Peter C. Hewlett
Keyword(s):  
Concrete Strength ◽  
Blended Cement ◽  
Data Matrix ◽  
Strength Development ◽  
Design Strength ◽  
Cement Ratio ◽  
Water Cement Ratio ◽  
Granulated Blast Furnace Slag ◽  
Data Points ◽  
Class F Fly Ash

This study, third in the series, following from ground limestone and Class F fly ash, evaluates, as a cement constituent, the effect of using ground granulated blast furnace slag (GGBS) on the strength development of concrete, and consequently its embodied carbon dioxide (CO2e). The paper has been built from systematically analysing, evaluating and modelling the extensive data-matrix developed, having 85,099 data points, from the information sourced from 663 studies published in English, during 1974 to 2020, by 1,672 authors, working in 718 institutions in 49 countries, globally. It is shown that, at a given water/cement ratio, in comparison to Portland cement (PC), the use of GGBS results in a reduction in 28-day concrete strength, which increases with GGBS content, at a rate determined by the strength of concrete, GGBS fineness, and curing of concrete. It is also shown that, as to achieve a 28-day design strength, a lower water/cement ratio is required with a PC/GGBS blended cement than PC, this will reduce the actual CO2e savings that can be realised with the use of GGBS as cement constituent in manufacturing concrete. Finally, it is shown that GGBS is more effective in lowering CO2e of concrete than FA and GLS.

scholarly journals Analysis of the Influence of Water-cement Ratio on Concrete Strength

2021 ◽  
Vol 283 ◽  
pp. 01016
Author(s):  
Wei Li
Keyword(s):  
Concrete Strength ◽  
Test Results ◽  
Cement Ratio ◽  
Water Cement Ratio ◽  
Large Stone ◽  
Regular Change ◽  
Small Stone ◽  
Influence Of Water ◽  
The Relationship

In this paper, the main strength of the relationship between water-cement ratio and concrete, and it uses the contrast test of different water cement ratio, finally, it gets the regular change between water cement ratio and concrete strength. The test results show that: cement. when the ratio of large stone: small stone: water: admixture is 340: 618: 1009: 433: 139: 6.8, the water-cement ratio of concrete is within the range of 0.371-0.479. The concrete strength of the sample decreases with the increase of the water-cement ratio. Finally, the relationship between the concrete strength and the water-cement ratio is obtained by fitting.

Effect of limestone aggregate type and water–cement ratio on concrete strength

2004 ◽  
Vol 58 (5) ◽  
pp. 772-777 ◽  
Author(s):  
Ergül Yaşar ◽  
Yasin Erdoğan ◽  
Alaettin Kılıç
Keyword(s):  
Concrete Strength ◽  
Cement Ratio ◽  
Water Cement Ratio ◽  
Limestone Aggregate

Effect of Recycled Coarse Aggregate on Recycled Concrete Properties and Study of Optimum Mixture Ratio

2014 ◽  
Vol 487 ◽  
pp. 84-89
Author(s):  
Hai Long Ning ◽  
Wen Feng Zhao ◽  
Jian Liu ◽  
Shao Peng Jiao ◽  
Yi Xin Wang
Keyword(s):  
Mechanical Properties ◽  
Coarse Aggregate ◽  
Concrete Strength ◽  
Recycled Concrete ◽  
Replacement Rate ◽  
Conventional Concrete ◽  
Mixture Ratio ◽  
Cement Ratio ◽  
Water Cement Ratio ◽  
Recycled Coarse Aggregate

To study the effect of recycled coarse aggregate, water-cement ratio and mixture ratio on the physico-mechanical properties of recycled concrete, determine the finial optimum mixture ratio and physico-mechanical properties of recycled concrete with the optimum mixture ratio, physico-mechanical tests are done on recycled concrete and conventional concrete. Results show that with the replacement rate increasing of recycled coarse aggregate, the compressive strength and splitting tensile strength of recycled concrete increase and then decrease. It is feasible to develop the concrete with 100% replacement rate of recycled coarse aggregate. With an increase of recycled coarse aggregate replacement rate, dry shrinkage ratio of concrete increases gradually, but the increasing range has little effect on the concrete. The concrete strength of 28 days is linear with water-cement ratio with the correlation coefficient is 0.98763. Taking appropriate mix design, the physico-mechanical properties of recycled concrete will surpass or be equivalent to those of conventional concrete. Recycled concrete of the optimum mixing rate is the high strength with lower brittleness.

Effect of Water-Cement Ratio on Carbonation and Steel-Corrosion Resistance of Recycled Concrete

2012 ◽  
Vol 174-177 ◽  
pp. 1552-1557 ◽  
Author(s):  
Ya Li Sun ◽  
Jin Song Zhu
Keyword(s):  
Compressive Strength ◽  
Concrete Strength ◽  
Steel Corrosion ◽  
Recycled Concrete ◽  
Cement Ratio ◽  
Water Cement Ratio ◽  
Ordinary Concrete ◽  
Steel Bar ◽  
Steel Corrosion Resistance ◽  
Concrete Cube

This paper studies the effects of different water-cement ratio on recycled concrete strength, anti-carbonation capability, and protecting reinforce steel bar capability. Select the water-cement ratio 0.6,0.55,0.5,0.45,0.4 five cases of the pilot study.It shows that: recycled concrete cube compressive strength, anti-carbonation capacity and protecting reinforce steel bar capability are less than ordinary concrete.

scholarly journals Effect of fly ash to water-cement ratio on the characterization of the concrete strength

2021 ◽  
Vol 1010 ◽  
pp. 012035
Author(s):  
E Susanti ◽  
H Istiono ◽  
I Komara ◽  
D Pertiwi ◽  
Y Septiarsilia ◽  
...  
Keyword(s):  
Fly Ash ◽  
Concrete Strength ◽  
Cement Ratio ◽  
Water Cement Ratio

scholarly journals اثر استخدام الرمل السيليكي على مقاومة الخرسانة

2021 ◽  
Vol 9 (2) ◽  
pp. 106-109
Author(s):  
Fathelrahman M. Adam ◽  
Omer E. A. ◽  
Mohammed I. Ali ◽  
Salih E. M.
Keyword(s):  
Portland Cement ◽  
Standard Method ◽  
Concrete Strength ◽  
Mix Design ◽  
Silica Sand ◽  
Compression Tests ◽  
British Standard ◽  
Cement Ratio ◽  
Water Cement Ratio

In this research, a study of using silica sand of a purity reaches 95% was done in order to know its effects on the strength of concrete when it used as an alternative to the normal sand by a different ratio of 25%, 50%, 75% and 100%. The study was done using Normal Portland Cement with a water/cement ratio of 0.52 and the mix design was done according to the British Standard Method. The ratio 1:1.5:3 was used for the different materials composed of the mix design. A reference mix design was used without containing any silica sand by means of 0% ratio of silica sand. Compression tests for the strength of concrete have been done for cubes of 7 days and 28 days age of curing and the results obtained appeared that the using of silica sand increases the concrete strength with reaching the peak at a ratio of 50% of silica sand where the strength was increased for the 7 days and 28 days by a ratio of 10% and 11% more than the strength of reference mix design respectively. Also, the study appears that the increase of silica sand by more than 50%, leads to the brittleness of concrete and this has been seen clearly when the ratio of silica sand reached 100% since the strength of concrete be down by 31% for 7 days and by 16% for the 28 days.  

scholarly journals Preparation and Optimization of Mix ratio for C50T Girder Manufactured Sand and Concrete

2021 ◽  
Vol 4 (2) ◽  
pp. 16
Author(s):  
Honghong Ye ◽  
Delin Zeng ◽  
Yong Yang ◽  
Xingbo Fan ◽  
Wei Wang ◽  
...  
Keyword(s):  
Raw Materials ◽  
Concrete Strength ◽  
Great Influence ◽  
Coal Ash ◽  
Cement Ratio ◽  
Water Cement Ratio ◽  
Manufactured Sand ◽  
Binding Material ◽  
Type Water

Considering actual construction conditions of Binchuan-Heqing Highway, this paper provides the C50 mix ratio conforming to engineering requirements by strictly controlling the quality of raw materials, optimizing the design of mix ratio scientifically, preparing superior C50 concrete 0 with manufactured sand, and optimizing the concrete mix ratio based on the adjustment of fly ash replacement, water-cement ratio, polycarboxylate-type water reducer mixing amount, sand ratio, etc. The result indicates that, the water-cement ratio has a great influence on the concrete strength, and if the ratio of coal ash is high in the binding material, the early compressive strength of the concrete will increase slowly.

Research on the Strength of High-Strength Steel Slag Concrete with Skeleton Coarse Aggregate Gradation

2013 ◽  
Vol 671-674 ◽  
pp. 1918-1922
Author(s):  
Yi Zhou Zhuang ◽  
Er Bu Tian ◽  
Yue Zong Lian
Keyword(s):  
Compressive Strength ◽  
High Strength Concrete ◽  
Coarse Aggregate ◽  
Concrete Strength ◽  
Steel Slag ◽  
High Strength ◽  
Test Results ◽  
Aggregate Gradation ◽  
Cement Ratio ◽  
Water Cement Ratio

Generally the high density in high-strength concrete results in high strength, and so people often mix superplasticizer and particulate to increase the density of concrete, but ignoring the effect of coarse aggregate gradation on concrete strength. Referring to several Gradation Theories, this paper selects the coarse aggregate gradation with skeleton, uses uniform design method to test the compressive strength of high-strength concrete, and analyses the test results. It can be known from the test results of 7d and 28d concrete specimen that the concrete strength decreases linearly with water-cement ratio and sand ratio; The 7d’s concrete strength has higher variability due to low water-cement ratio with superplasticizer; The coarse aggregate skeleton is interfered by the increase of steel slag and sand rate, and the concrete strength decreases with limited cement paste. Furthermore, the steel slag with less than 30% addition has little effect on concrete strength and it can increase the cement’s possibility of contacting to water, and reduce the amount of cement without lowering the concrete strength. The influential degree on the compressive strength of concrete is followed by ascending sequence of steel slag content, sand ratio and water-cement.

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