The effects of sand washing waste and microwave curing on the dimensional stability of epoxy mortar. (30th July 2020)

• Record Type: Journal Article
• Authors: Rajeshwar, B.K.; Molla Yemam, Dinberu; Jang, Indong; Yi, Chongku
• Is Part Of: Construction & building materials. Volume 250(2020)
• Publication Date: 2020-07-30
• Subjects: Epoxy resin mortar -- Sand washing waste (SWW) -- Dimensional stability -- Microwave curing; Building materials -- Periodicals; 624.18
• DOI: 10.1016/j.conbuildmat.2020.118892
• Languages: English
• ISSNs: 0950-0618

Abstract

Highlights: Effect of SWW on the dimensional stability of epoxy resin mortar was evaluated. Effect of curing methods (conventional and microwave) on the dimensional stability was assessed. Dimensional stability was assessed in terms of shrinkage and coefficient of thermal expansion. Abstract: Sand washing waste (SWW), a by-product of the aggregate production process, consists of microfine particles and has limited practical applications in cement composites. In this study, SWW was considered as a potential filler for epoxy mortars. The effect of SWW on the dimensional stability of epoxy mortar specimens was investigated in terms of linear shrinkage and coefficient of thermal expansion (CTE). In addition, the effects of curing methods (open air and microwave) on the dimensional stability of epoxy mortar were assessed. The open air-cured specimens containing an optimum level of SWW exhibited improved dimensional stability compared to pure epoxy; however, increasing the content of the SWW in epoxy mortar led to increased shrinkage. It was also noted that microwave-cured specimens had lower shrinkage, as well as expansion, in comparison to open air-cured specimens.