Recycling of Glass Fines and Plastics in Clay Bricks at Low Temperature Using Alkaline Activation

IF 0.8 Q4 ENGINEERING, ENVIRONMENTAL

Proceedings of the Institution of Civil Engineers-Waste and Resource Management Pub Date : 2022-09-20 DOI:10.1680/jwarm.22.00014

Aswin Kumar Krishnan, Y. Wong, Zipeng Zhang, A. Arulrajah

{"title":"Recycling of Glass Fines and Plastics in Clay Bricks at Low Temperature Using Alkaline Activation","authors":"Aswin Kumar Krishnan, Y. Wong, Zipeng Zhang, A. Arulrajah","doi":"10.1680/jwarm.22.00014","DOIUrl":null,"url":null,"abstract":"The research aims to develop a new blend of clay brick using recycled glass fines and recycled plastics in masonry bricks with varying percentages at low curing temperature. Alkaline activated solutions used in the research was sodium hydroxide (NaOH) and sodium silicate (Na2SiO3). Various percentages of alkaline activators (5%, 10%, 15%) have been initiated, while the suitable alkaline activator was set at 20%. Brick samples were placed in an oven at a heating temperature of 50°C for 24 hours (reduce the moisture content), followed by an increasing the heating temperature to 155°C for 48 hours. The previous findings demonstrated that the moisture curing for the sample was 50°C for 48 hours, and the heating temperature raised to 155°C for 24 hours. A series of laboratory testings for the brick samples such as compressive strength, water absorption, linear shrinkage, and scanning electron microscopy (SEM) characterization for the brick were evaluated in this experiment. The curing conditions examined was 7 days and 28 days. The results from the experiment revealed that the relationship between water absorption and curing conditions satisfied the minimum requirement of masonry bricks using recycled glass fines and plastics. Highlights · The microstructural properties of the masonry brick using recycled materials as aggregates was explored. · Alkaline activated bricks showed durability and improve compressive strength. · The preparation of masonry activated bricks at low heating temperature is a challenging aspect.","PeriodicalId":45077,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Waste and Resource Management","volume":null,"pages":null},"PeriodicalIF":0.8000,"publicationDate":"2022-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of the Institution of Civil Engineers-Waste and Resource Management","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1680/jwarm.22.00014","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, ENVIRONMENTAL","Score":null,"Total":0}

引用次数: 0

Abstract

The research aims to develop a new blend of clay brick using recycled glass fines and recycled plastics in masonry bricks with varying percentages at low curing temperature. Alkaline activated solutions used in the research was sodium hydroxide (NaOH) and sodium silicate (Na2SiO3). Various percentages of alkaline activators (5%, 10%, 15%) have been initiated, while the suitable alkaline activator was set at 20%. Brick samples were placed in an oven at a heating temperature of 50°C for 24 hours (reduce the moisture content), followed by an increasing the heating temperature to 155°C for 48 hours. The previous findings demonstrated that the moisture curing for the sample was 50°C for 48 hours, and the heating temperature raised to 155°C for 24 hours. A series of laboratory testings for the brick samples such as compressive strength, water absorption, linear shrinkage, and scanning electron microscopy (SEM) characterization for the brick were evaluated in this experiment. The curing conditions examined was 7 days and 28 days. The results from the experiment revealed that the relationship between water absorption and curing conditions satisfied the minimum requirement of masonry bricks using recycled glass fines and plastics. Highlights · The microstructural properties of the masonry brick using recycled materials as aggregates was explored. · Alkaline activated bricks showed durability and improve compressive strength. · The preparation of masonry activated bricks at low heating temperature is a challenging aspect.

查看原文本刊更多论文

低温碱性活化法回收粘土砖中的玻璃粉和塑料

该研究旨在开发一种新的混合粘土砖，在低固化温度下，在砖石砖中使用不同比例的再生玻璃粉和再生塑料。研究中使用的碱性活化溶液为氢氧化钠(NaOH)和硅酸钠(Na2SiO3)。启动不同比例的碱性活化剂(5%、10%、15%)，适宜的碱性活化剂为20%。将砖样置于烤箱中，加热温度为50℃，加热24小时(降低含水率)，然后将加热温度提高到155℃，加热48小时。先前的研究结果表明，样品的水分固化为50℃，48小时，加热温度升至155℃，24小时。本实验对砖样的抗压强度、吸水率、线性收缩率和扫描电子显微镜(SEM)表征等一系列实验室测试进行了评估。试验的养护条件为7天和28天。实验结果表明，该材料的吸水率与养护条件之间的关系满足了再生玻璃粉和塑料砌筑砖的最低要求。·研究了以再生材料为骨料的砌体砖的微观结构特性。·碱性活化砖耐久，抗压强度提高。·低温下砌体活性砖的制备是一个具有挑战性的方面。

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

Proceedings of the Institution of Civil Engineers-Waste and Resource Management ENGINEERING, ENVIRONMENTAL-

CiteScore

1.70

自引率

14.30%

发文量

期刊介绍： Waste and Resource Management publishes original research and practice papers on all civil engineering and construction related aspects of the resource management cycle, from the minimization of waste, through the re-use and recycling, to the management and disposal of residual wastes. Associated legislation, standards, socio-economic considerations and links with sustainable consumption and production are included. The range of subjects covered encompasses, but is not restricted to, strategies for reducing construction waste through better design, improved recovery and re-use, more efficient resource management, the performance of materials recovered from wastes, and, the procurement, planning, design, construction, operation and logistics of waste and resource management facilities.