Effect of Quarry Dust on the Fresh Concrete Properties of Self Compacting Concrete

Materials Science Forum Pub Date : 2024-04-18 DOI:10.4028/p-wpzhd6

A. Anitha, C. Karthik, S.C. Sarathkumar

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Abstract

Self-compacting concrete (SCC) is a concrete which flows under its own weight in the congested areas without any external force. Increase in demand and decrease in availability of fine aggregates, we use an alternative material called quarry dust, it is a finer material generated from stone quarries. This paper deals with the feasibility study on the utilization of quarry dust as a partial replacement in fine aggregate. In this experimental investigation, the properties of materials are tested as per Indian standards. The filling ability, passing ability and flowability characteristics of SCC as a partial replacement of fine aggregate with quarry dust was investigated as per EFNARC guidelines. In this experimental investigation, different mixes were prepared as a partial replacement of fine aggregate with quarry dust at various percentages such as 10%, 20%, 30%, 40% and 50% to obtain the optimum replacement level. The Slump flow, U-box, L-Box, V-Funnel and J-ring tests were carried out to determine the workability of SCC. The finding shows that the workability decreases with the addition of quarry dust. It is concluded that addition of quarry dust reduces the fresh properties of the SCC.

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采石场粉尘对自密实混凝土新拌混凝土性能的影响

自密实混凝土（SCC）是一种无需任何外力即可在拥堵区域依靠自重流动的混凝土。由于细集料的需求增加和供应减少，我们使用了一种叫做石矿灰的替代材料，它是一种从石矿中产生的更细的材料。本文论述了利用采石场粉尘部分替代细集料的可行性研究。在实验研究中，按照印度标准对材料的特性进行了测试。根据 EFNARC 准则，研究了用石矿粉部分替代细骨料的 SCC 的填充能力、通过能力和流动性特征。在这项实验研究中，我们制备了不同的混合料，以 10%、20%、30%、40% 和 50%等不同比例的石灰粉部分替代细骨料，从而获得最佳替代水平。通过坍落度流动试验、U 型箱试验、L 型箱试验、V 型隧道试验和 J 型环试验来确定 SCC 的工作性。结果表明，随着石粉的添加，工作性降低。由此得出结论，添加石矿灰会降低水泥混凝土的新鲜特性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Materials Science Forum

CiteScore

1.20

自引率

0.00%

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