Potential use of treated sewage in concrete to meet water crises in megacities

IF 0.8 Q4 ENGINEERING, ENVIRONMENTAL

Proceedings of the Institution of Civil Engineers-Waste and Resource Management Pub Date : 2022-08-04 DOI:10.1680/jwarm.21.00044

Vaishali Sahu, Prashant Kumar

{"title":"Potential use of treated sewage in concrete to meet water crises in megacities","authors":"Vaishali Sahu, Prashant Kumar","doi":"10.1680/jwarm.21.00044","DOIUrl":null,"url":null,"abstract":"Water scarcity is one of the most important issues wherein countries are becoming water-stressed. India's dependency on groundwater has increased between the years 2004 and 2013 and each state of the country is facing a decline in the water table due to the growing requirements. Acute water shortage and high-water demands are from sectors like agriculture, industrial, and construction. The construction industry is accountable for the enormous consumption of water as the Indian guidelines recommend the use of potable water for concrete. The present study investigates the use of treated sewage as mixing and curing water in concrete. Comprehensive tests on fresh and hardened concrete have been carried out for each concrete mix, like, setting time, workability, compressive strength, rapid chloride permeability test and water permeability. Potable water was replaced by weight in ratios of 50%, 80%, and 100% of the treated sewage in the mixing and curing of specimens. The water to cement (w/c) ratio has been taken is 0.45 for potable and treated sewage concrete. Compressive strength and durability have been tested after 7, 28, 56, and 90 days of curing. It can be concluded that treated sewage has the potential to replace fresh potable water in concrete mixing and curing and shall be included in relevant guidelines.","PeriodicalId":45077,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Waste and Resource Management","volume":null,"pages":null},"PeriodicalIF":0.8000,"publicationDate":"2022-08-04","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.21.00044","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

Water scarcity is one of the most important issues wherein countries are becoming water-stressed. India's dependency on groundwater has increased between the years 2004 and 2013 and each state of the country is facing a decline in the water table due to the growing requirements. Acute water shortage and high-water demands are from sectors like agriculture, industrial, and construction. The construction industry is accountable for the enormous consumption of water as the Indian guidelines recommend the use of potable water for concrete. The present study investigates the use of treated sewage as mixing and curing water in concrete. Comprehensive tests on fresh and hardened concrete have been carried out for each concrete mix, like, setting time, workability, compressive strength, rapid chloride permeability test and water permeability. Potable water was replaced by weight in ratios of 50%, 80%, and 100% of the treated sewage in the mixing and curing of specimens. The water to cement (w/c) ratio has been taken is 0.45 for potable and treated sewage concrete. Compressive strength and durability have been tested after 7, 28, 56, and 90 days of curing. It can be concluded that treated sewage has the potential to replace fresh potable water in concrete mixing and curing and shall be included in relevant guidelines.

查看原文本刊更多论文

处理后的污水在混凝土中的潜在用途，以满足特大城市的水危机

水资源短缺是各国面临水资源压力的最重要问题之一。2004年至2013年间，印度对地下水的依赖有所增加，由于需求不断增长，该国每个州都面临着地下水位下降的问题。农业、工业和建筑等部门缺水严重，用水需求高。建筑行业对大量的水消耗负有责任，因为印度的指导方针建议使用饮用水来制作混凝土。本研究探讨了处理后的污水在混凝土中作为搅拌和养护水的使用。对各配合比进行了新拌混凝土和硬化混凝土的凝结时间、和易性、抗压强度、快速氯离子渗透试验和透水性等综合试验。在混合和养护标本时，用重量比分别为50%、80%和100%的处理污水代替饮用水。饮用水混凝土和污水处理混凝土的水灰比均取0.45。在养护7天、28天、56天和90天后进行了抗压强度和耐久性测试。可以得出结论，处理后的污水有可能在混凝土搅拌和养护中取代新鲜饮用水，并应列入相关指南。

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.