Effects of elevated temperature and water quenching on strength and microstructure of mortars with river sand substitutes

Jeyaprabha, B.; Elangovan, G.; Prakash, Prashant

doi:10.1016/j.conbuildmat.2016.03.189

Cited by 31 publications

(9 citation statements)

References 31 publications

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“…This can be similarly attributed to the higher water absorption capacity of GCW compared to river sand. The reason for this ratio to be higher than those obtained in the studies of Jeyaprabha et al 29 and Vijayalakshmi et al 10 can be the lower w/c ratio used in the mixtures of Singh et al 30 They also reported that the compressive strength decreased with increase in the w/c ratio for similar substitution rates. The SEM images of the used GP and river sand are shown in Allam et al 41 The effect of saw gang granite replaced with sand on the mechanical properties of concrete Sand was replaced with saw gang granite at substitution rates of 10, 17.5, and 20% to prepare concrete mixtures with a w/c ratio of 0.45.…”

Section: Compressive Strength Indirect Tensile Strengthmentioning

confidence: 73%

“…This can be attributed to the filler effect of GP thanks to its high fineness. The reason for the difference between the substitution rates that were evaluated as optimum in the study of Vijayalakshmi et al 10 and the study of Jeyaprabha et al 29 can be the higher fineness of the GP waste that was used in the latter study. Singh et al, 30 reported that the optimum substitution rate of granite cutting waste (GCW) for the best mechanical properties was 25% and that the optimum w/c ratio was 0.30.…”

Section: Compressive Strength Indirect Tensile Strengthmentioning

confidence: 93%

“…Workability, compressive strength, flexural strength, splitting tensile strength, carbonation depth Jeyaprabha et al 29 The effect of natural sand replacement with granite powder on the mechanical properties of the mixtures.…”

Section: Substitution Of Fine Aggregates With Waste Granitementioning

confidence: 99%

“…Compressive strength, flexural strength, and splitting tensile strength rate above 10% and the decrease in compressive strength with increase in the porosity. Jeyaprabha et al 29 reported that to obtain the best mechanical properties in mortar samples that were subjected to standard curing and high temperatures (200, 500, 700, and 900 C), the best substitution rate was 15%. This can be attributed to the filler effect of GP thanks to its high fineness.…”

Section: Compressive Strength Indirect Tensile Strengthmentioning

confidence: 99%

“…Figure 8 shows the relationship between cost savings and compressive strength. For a substitution rate of 15%, 29,34,40,42 reported compressive strength improvement rates of 16.4, 17.5, 24.75, and 25%, respectively. Although the cost gain continued to increase above 15% substitution rate, the gain in compressive FIGURE 6 Optimum waste granite powder ratios that are used in place of cement (%) strength decreased.…”

Section: Economic Benefits Of Using Wg In Concretementioning

confidence: 99%

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Semi‐green cementitious materials from waste granite by considering the environmental, economic, and health impacts: A review

Arel

Shaikh

2018

Structural Concrete

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In this review, the studies conducted on the use of recycled waste granite (WG) in place of different components in concrete or cementitious materials, such as aggregate and cement were reviewed. In this regard; research was conducted on the reuse of WG to make economic benefit, to prevent accumulation of WG, to contribute to the environment by helping in the formation of new materials from waste material, and the use of WG, which would generate hazardous radioactive gas to human health, in concrete production. Thus, the cementitious materials that will be obtained shall be environment-friendly, economic, and helpful in the isolation of hazardous radioactive wastes. Therefore, within the scope of this study, it was investigated whether semi-green cementitious materials obtained from recycling WG would have the mechanical characteristics to satisfy the requirements, and have equivalent or even surpassing characteristics compared to materials made from classic materials. The results were obtained at a substitution rate of 5-7.5%; when recycled WG was used in place of aggregate, the results were obtained at a substitution rate of 15-25%; and when recycled WG was used in place of coarse aggregate, it gave better performance than recycled normal concrete aggregate and worse performance than crushed quartzite coarse aggregate. Furthermore, in terms of economy, it was determined that the utilization of WG would decrease costs by a minimum of 0.54% and a maximum of 2.1%; while with respect to CO 2 emissions, the use of WG could decrease worldwide CO 2 emission by 5%. Also, it was determined that the best solution for granite, which could cause gas emissions of hazardous gases such as radon gas, would be to be used in concrete that would be exposed to open air.

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Section: Compressive Strength Indirect Tensile Strengthmentioning

confidence: 73%