High Strength Green (HSG) Concrete with Coal Fly Ash

Revista Ingeniería de Construcción Pub Date : 1900-01-01 DOI:10.7764/ric.00052.21

I. Rahman, S. Shahid, S. Ali

引用次数: 0

Abstract

The use of fly ash in concrete can lessen the burden of its dumping in landfills to protect the environment and soil degradation. We investigated the concrete mixtures incorporating various percentages of fly ash and studied the mechanical properties of high strength green (HSG) concrete. 0.32 w/c ratio was used. Six mixtures were investigated with varying percentages of fly ash (0%, 4%, 8%, 12%, 16%, 20%) with HRWR (high range water reducer) ranges (0%, 0.4%, 0.7%, 1.0%, 1.3%, 1.6%). The compressive strength of the mixture with a dosage of fly ash from 4 -12%, showed satisfactory results. The peak value of split tensile strength was 4.9 MPa with 12% fly ash dosage. Flexural strength in control mixture was observed at 3.73 MPa in 28 days and there was a slight increase in the trend of flexural strength. The compressive strength was achieved till 12% volume of fly ash for 14 & 28 days. It was due to more adherence between the fly ash and aggregate. Fly ash is very suitable to be used in concrete to produce high strength green (HSG) concrete. If we use fly ash in concrete, it can help us cleaning the environment from contaminating materials.

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粉煤灰高强绿色(HSG)混凝土

在混凝土中掺入粉煤灰可以减轻其填埋负担，保护环境，防止土壤退化。我们研究了掺入不同比例粉煤灰的混凝土混合料，并研究了高强度绿色(HSG)混凝土的力学性能。采用0.32 w/c比值。研究了6种粉煤灰掺量分别为0%、4%、8%、12%、16%、20%和HRWR(高减水剂)0%、0.4%、0.7%、1.0%、1.3%、1.6%的混合料。粉煤灰掺量为4 ~ 12%时，混合料的抗压强度较好。粉煤灰掺量为12%时，劈裂抗拉强度峰值为4.9 MPa。对照混合物的抗弯强度为3.73 MPa, 28d后抗弯强度略有上升趋势。经过14天和28天的试验，粉煤灰的抗压强度达到12%。这是由于粉煤灰和骨料之间的粘附性更强。粉煤灰非常适合用于混凝土中制备高强绿色混凝土(HSG)。如果我们在混凝土中使用粉煤灰，它可以帮助我们清理污染物质的环境。

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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Revista Ingeniería de Construcción

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