Enhancing the performance of aerated concrete through accelerated curing and waste material integration

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2023-12-17 DOI:10.1680/jadcr.23.00150

Pradyut Anand, Anand Kr Sinha, Puja Rajhans

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引用次数: 0

Abstract

This article discusses the mechanical and durability properties of aerated blocks. In present study, aerated blocks prepared by using different cementitious materials along with the alkaline solution (AS) in the absence of aluminium powder. The proportions of raw materials are chosen after performing two mix trials P1 and P2, keeping the density of blocks constant i.e., 800 kg/m³. Each mix is further tested under six curing mechanisms, viz, normal water curing, humidity chamber curing at (50°C and 70% relative humidity) for 6 hours and 10 hours, oven drying curing at 180°C for 6 hours and at 80℃ for 24 hours and using accelerated curing (ACT) at 65°C±5°C for 10±2 hours and named as trial “1”. In trial “2” the best curing mechanism is taken and construction and demolition waste are substituted at different proportions in place of flyash in both the mix proportions. Further, trial “3” is investigated on the best mix proportion by substituting glass powder at 50% and 100% with flyash and CDW, respectively. It is observed from experiments that aerated blocks manufactured with 50% CDW and heat curing done in the ACT showed high mechanical and durability properties after 7 days of hardening.

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通过加速养护和废料整合提高加气混凝土的性能

本文讨论了加气砌块的机械性能和耐久性能。在本研究中，在不使用铝粉的情况下，使用不同的胶凝材料和碱性溶液（AS）制备加气砌块。在进行了 P1 和 P2 两次混合试验后，选择了原材料的比例，并保持砌块的密度不变，即 800 公斤/立方米。每种混合料在六种固化机制下进行进一步测试，即普通水固化、湿度室固化（50°C 和 70% 相对湿度）6 小时和 10 小时、烘箱干燥固化（180°C 6 小时和 80°C 24 小时）以及加速固化（ACT）（65°C±5°C 10±2 小时），并命名为试验 "1"。在试验 "2 "中，采用了最佳的固化机制，并在两种混合比例中以不同比例用建筑和拆迁废物代替粉煤灰。此外，试验 "3 "还研究了最佳混合比例，即分别用 50%和 100%的玻璃粉代替粉煤灰和建筑和拆卸废料。实验结果表明，使用 50%的 CDW 和在 ACT 中进行热固化的加气砌块在 7 天硬化后显示出较高的机械性能和耐久性能。

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.