The Effect of Brick and Glass Powder on the Mechanical Properties and Porosity of Self-Compacting Mortar

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2023-04-01 DOI:10.2478/jaes-2023-0006

Yasmina Bouleghebar, M. Bentchikou, O. Boukendakdji, K. El-Hadj, F. Debieb, A. Maisarah

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引用次数: 1

Abstract

Abstract The use of glass and brick powder waste as supplementary cementious material provides an effective approach to produce concrete in order to effectively save resources and solve environmental pollution problems. This study shows the evolution of the preparation of an eco-friendly self-compacting mortar (SCM) with various fineness levels and replacement ratios of crushed glass and crushed calcined brick waste. Cement was replaced by weight, by 8, 12, 16, 20, 24% of glass powder (GP) and 4, 8, 12, 16 and 20% of crushed brick powder (BP), with three specific surface Blaine (SSB) fineness measurements (F1=3300cm2/g,F2=4400 cm2/g and F3=6000 cm2/g) for both wastes. Mini-slump and V-funnel flow time tests of fresh SCM were evaluated. Compressive and flexural strength developments of cured SCMs were determined on 7, 14, 28, 5 6, and 90 days. In addition, porosity of SCM was also evaluated. The results revealed that the (SCM-GP) mix increases workability and reduces superplasticizer dosage, while the (SCMBP) mix reduces workability with a slight increase in superplasticizer. When the GP fineness is higher than the cement fineness, the compression strength with GP contents up to 16% is superior to without the GP, whereas for the BP the strength improvement is up to 8%, while the compression strength decreases when the GP and BP fineness is close or lower than the cement fineness. The porosity diminishes with the increase of the fineness; the 12% of the GPF3 indicated the lowest porousness at 400 days, whereas for SCM-BP the 8BPF3 is the least porous mixture.

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砖和玻璃粉对自密实砂浆力学性能和孔隙率的影响

摘要利用废弃玻璃和砖粉作为补充水泥材料，为生产混凝土提供了一种有效的途径，从而有效地节约资源，解决环境污染问题。本研究展示了一种环保自密实砂浆（SCM）的制备过程，该砂浆具有不同的细度水平和碎玻璃和煅烧砖废料的替代率。水泥按重量用8%、12%、16%、20%、24%的玻璃粉（GP）和4%、8%、12%和20%的碎砖粉（BP）代替，并对这两种废物进行三次比表面积布莱恩（SSB）细度测量（F1=3300cm2/g，F2=4400cm2/g和F3=6000cm2/g）。对新鲜SCM的迷你坍落度和V型漏斗流动时间试验进行了评价。在第7天、第14天、第28天、第56天和第90天测定固化SCMs的抗压强度和弯曲强度发展。此外，还对SCM的孔隙率进行了评价。结果表明，（SCM-GP）混合料提高了工作性能并降低了减水剂用量，而（SCMBP）混合料降低了工作性能，减水剂用量略有增加。当GP细度高于水泥细度时，GP含量高达16%的抗压强度优于不含GP的抗压强度，而对于BP，强度提高高达8%，而当GP和BP细度接近或低于水泥细度时抗压强度降低。孔隙率随细度的增加而减小；12%的GPF3表明在400天时孔隙率最低，而对于SCM-BP，8BPF3是孔隙率最低的混合物。

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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.