{"title":"Effects of gold tailings dosage and PVA fiber content on the frost resistance of ECC","authors":"Zhi Ge, Chuansong Chen, Yufeng Bi, Hongzhi Zhang, Yanhua Guan, Yongwei Yang, Yifeng Ling, Renjuan Sun","doi":"10.1680/jadcr.23.00115","DOIUrl":null,"url":null,"abstract":"In this study, the effect of gold tailings on the frost resistance of engineered cementitious composites (ECC) was investigated. The ECC were made with three gold tailings dosages and four polyvinyl alcohol (PVA) fiber contents. A water-binder ratio (W/B) of 0.28 was used for all mixtures. Surface damage, mass loss, relative dynamic elastic modulus, compressive strength and damaged layer thickness were tested to investigate the frost resistance of ECC. The results indicate that the effect of gold tailings on the frost resistance of ECC is marginal. Moreover, the frost resistance of ECC increases with the increase of fiber content. The ECC with the addition of gold tailings have the same excellent frost resistance as those without gold tailings, indicating that it is feasible to replace silica sand with gold tailings up to 100% replacement in ECC. In addition, a predictive model of damaged layer thickness of ECC in function of gold tailings dosage and freezing-thawing (F-T) cycle was developed.","PeriodicalId":7299,"journal":{"name":"Advances in Cement Research","volume":null,"pages":null},"PeriodicalIF":1.4000,"publicationDate":"2023-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advances in Cement Research","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1680/jadcr.23.00115","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CONSTRUCTION & BUILDING TECHNOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
In this study, the effect of gold tailings on the frost resistance of engineered cementitious composites (ECC) was investigated. The ECC were made with three gold tailings dosages and four polyvinyl alcohol (PVA) fiber contents. A water-binder ratio (W/B) of 0.28 was used for all mixtures. Surface damage, mass loss, relative dynamic elastic modulus, compressive strength and damaged layer thickness were tested to investigate the frost resistance of ECC. The results indicate that the effect of gold tailings on the frost resistance of ECC is marginal. Moreover, the frost resistance of ECC increases with the increase of fiber content. The ECC with the addition of gold tailings have the same excellent frost resistance as those without gold tailings, indicating that it is feasible to replace silica sand with gold tailings up to 100% replacement in ECC. In addition, a predictive model of damaged layer thickness of ECC in function of gold tailings dosage and freezing-thawing (F-T) cycle was developed.
期刊介绍：
Advances in Cement Research highlights the scientific ideas and innovations within the cutting-edge cement manufacture industry. It is a global journal with a scope encompassing cement manufacture and materials, properties and durability of cementitious materials and systems, hydration, interaction of cement with other materials, analysis and testing, special cements and applications.
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