Silicate impurities incorporation in calcium aluminate cement concrete: mechanical and microstructural assessment

IF 1.3 4区材料科学 Q3 MATERIALS SCIENCE, CERAMICS

Advances in Applied Ceramics Pub Date : 2021-02-17 DOI:10.1080/17436753.2021.1889755

A. Abolhasani, F. Aslani, B. Samali, S. Ghaffar, H. Fallahnejad, S. Banihashemi

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引用次数: 9

Abstract

ABSTRACT In this paper, the effect of rice husk ash (RHA), as silicate impurities, on the microstructure and mechanical properties of calcium aluminate cement concrete (CACC) is explored. Various mechanical tests, including tests for obtaining the compressive, splitting tensile, flexural strengths and elastic modulus, were performed on different mixture designs containing different volume percentages of RHA (0, 2.5, 5, 7.5, and 10%) at W/Cs of 0.4 and 0.5. Furthermore, the impact of RHA on the microstructure of this concrete was examined through careful analysis of the scanning electron microscope (SEM) images and energy dispersive X-ray spectroscopy (EDS) results. The results demonstrate that, At W/C of 0.5, the microstructure and mechanical properties were improved, with the greatest improvement for the RHA substitution percentage of 5%. However, at W/C of 0.4, the addition of RHA showed no positive effect, which can be attributed to a higher specific surface area of RHA than cement.

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铝酸钙水泥混凝土中硅酸盐杂质掺入:力学和微观结构评价

摘要本文研究了稻壳灰(RHA)作为硅酸盐杂质对铝酸钙水泥混凝土(CACC)微观结构和力学性能的影响。在W/Cs为0.4和0.5的情况下，对含有不同RHA体积百分比(0、2.5、5、7.5和10%)的不同混合料设计进行了各种力学试验，包括获得抗压、劈裂拉伸、抗弯强度和弹性模量的试验。此外，通过仔细分析扫描电子显微镜(SEM)图像和能量色散x射线光谱(EDS)结果，研究了RHA对混凝土微观结构的影响。结果表明，在W/C为0.5时，合金的组织和力学性能得到改善，其中RHA取代率为5%时改善效果最大;然而，在W/C为0.4时，RHA的加入并没有产生积极的影响，这可能是由于RHA的比表面积高于水泥。

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

Advances in Applied Ceramics 工程技术-材料科学：硅酸盐

CiteScore

4.40

自引率

4.50%

发文量

审稿时长

5.2 months

期刊介绍： Advances in Applied Ceramics: Structural, Functional and Bioceramics provides international coverage of high-quality research on functional ceramics, engineering ceramics and bioceramics.