Acid Resistance of Alkali Activated Composites Containing Waste Glass Fine Aggregate

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2022-10-19 DOI:10.1680/jadcr.21.00022

Md. Nabi Newaz Khan, Manjur A Elahi, Jhutan Chandra Kuri, P. Sarker, Faiz Shaikh

{"title":"Acid Resistance of Alkali Activated Composites Containing Waste Glass Fine Aggregate","authors":"Md. Nabi Newaz Khan, Manjur A Elahi, Jhutan Chandra Kuri, P. Sarker, Faiz Shaikh","doi":"10.1680/jadcr.21.00022","DOIUrl":null,"url":null,"abstract":"This study examined the efficacy of waste glass cullet as a substitute materials to natural fine aggregate in alkali activated composites when exposed to H2SO4 and HCl acid solutions for one year. The changes in physical appearance, surface alkalinity, mass, mechanical strength and microstructure of the hardened samples before and after immersion in acid solutions were investigated. The findings of the experimental work indicated that the physical, mechanical and microstructural damages of the specimens due to acid attacks increased with the rise of glass aggregate percentages. This is attributed to the smooth surface texture and angularity of the glass cullet which affected the bond with the damaged paste matrix at the interfacial transition zone (ITZ) and increased the porosity. However, the acid resistance performance of the mortars containing up to 50% glass aggregate was found satisfactory when compared with the mortar without glass fine aggregate. Therefore, the use of waste glass cullet as a partial replacement of natural sand by up to 50% is considered feasible in alkali activated systems against acid exposures.","PeriodicalId":1,"journal":{"name":"Accounts of Chemical Research","volume":null,"pages":null},"PeriodicalIF":16.4000,"publicationDate":"2022-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Accounts of Chemical Research","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1680/jadcr.21.00022","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

This study examined the efficacy of waste glass cullet as a substitute materials to natural fine aggregate in alkali activated composites when exposed to H2SO4 and HCl acid solutions for one year. The changes in physical appearance, surface alkalinity, mass, mechanical strength and microstructure of the hardened samples before and after immersion in acid solutions were investigated. The findings of the experimental work indicated that the physical, mechanical and microstructural damages of the specimens due to acid attacks increased with the rise of glass aggregate percentages. This is attributed to the smooth surface texture and angularity of the glass cullet which affected the bond with the damaged paste matrix at the interfacial transition zone (ITZ) and increased the porosity. However, the acid resistance performance of the mortars containing up to 50% glass aggregate was found satisfactory when compared with the mortar without glass fine aggregate. Therefore, the use of waste glass cullet as a partial replacement of natural sand by up to 50% is considered feasible in alkali activated systems against acid exposures.

查看原文本刊更多论文

含废玻璃细骨料的碱活性复合材料的耐酸性

本研究考察了废玻璃片在硫酸和盐酸溶液中暴露一年，作为碱活化复合材料中天然细骨料的替代材料的效果。研究了硬化试样在酸溶液中浸泡前后的物理外观、表面碱度、质量、机械强度和显微组织的变化。实验结果表明，随着玻璃骨料含量的增加，酸侵蚀对试样的物理、力学和微观结构的损伤程度增加。这是由于玻璃碎片的光滑表面纹理和棱角影响了与界面过渡区(ITZ)受损膏体基体的结合，并增加了孔隙率。然而，与不含玻璃细骨料的砂浆相比，含50%玻璃细骨料砂浆的耐酸性能令人满意。因此，在碱活化系统中，使用废玻璃屑作为天然砂的部分替代物高达50%被认为是可行的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

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.