Influence of bagasse ash and recycled concrete aggregate on hardened properties of high-strength concrete

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2018-06-30 DOI:10.3989/MC.2018.04717

Pokpong Rattanachu, I. Karntong, Weerachart Tangchirapat, C. Jaturapitakkul, Prynia Chindaprasirt

引用次数: 13

Abstract

This research aimed to use of bagasse ash as a cement replacement in high-strength recycled aggregate concrete (HS-RAC). Crushed limestone was replaced with 100% recycled concrete aggregate (RCA) and the ground bagasse ash (GBA) was used to partially replace ordinary Portland cement (OPC) at 20, 35 and 50%wt of binder to cast HS-RAC. The results indicated that the replacing of crushed limestone with RCA had a negative impact on the properties of the concrete. Increasing the amount of GBA in HS-RAC resulted in a decrease in density and an increase in the volume of permeable pore space. The concrete mixtures prepared with 20%wt GBA replacement of OPC promoted greater the compressive strength than the conventional concrete (CT concrete) at 90 days or more. HS-RAC with GBA (up to 50%) was more durable in terms of chloride ion penetration resistance, although it had lower compressive strength than the CT concrete.

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蔗渣灰和再生混凝土骨料对高强混凝土硬化性能的影响

本研究旨在利用蔗渣灰作为高强度再生骨料混凝土（HS-RAC）的水泥替代品。用100%再生混凝土骨料（RCA）代替破碎的石灰石，并使用磨碎的蔗渣灰（GBA）以20、35和50%重量的粘结剂部分代替普通硅酸盐水泥（OPC）来铸造HS-RAC。结果表明，用RCA代替破碎的石灰石对混凝土的性能产生了负面影响。增加HS-RAC中GBA的量导致密度降低和可渗透孔隙空间体积增加。用20%wt GBA代替OPC制备的混凝土混合物在90天或更长时间内比传统混凝土（CT混凝土）提高了更大的抗压强度。含GBA的HS-RAC（高达50%）在抗氯离子渗透性方面更耐用，尽管其抗压强度低于CT混凝土。

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

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.