The effects of sand washing waste and microwave curing on the dimensional stability of epoxy mortar

B. K. Rajeshwar; Dinberu Molla Yemam; Indong Jang; Chongku Yi

doi:10.1016/j.conbuildmat.2020.118892

The effects of sand washing waste and microwave curing on the dimensional stability of epoxy mortar

B. K. Rajeshwar, Dinberu Molla Yemam, Indong Jang, Chongku Yi

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

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.

Original language	English
Article number	118892
Journal	Construction and Building Materials
Volume	250
DOIs	https://doi.org/10.1016/j.conbuildmat.2020.118892
Publication status	Published - 2020 Jul 30

Bibliographical note

Funding Information:
This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future Planning (No. 2015R1D1A1A01060892 ). In addition, this study was supported by a Korea University Grant.

Publisher Copyright:
© 2020

Keywords

Dimensional stability
Epoxy resin mortar
Microwave curing
Sand washing waste (SWW)

ASJC Scopus subject areas

Civil and Structural Engineering
Building and Construction
General Materials Science

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10.1016/j.conbuildmat.2020.118892

Cite this

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title = "The effects of sand washing waste and microwave curing on the dimensional stability of epoxy mortar",

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.",

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AU - Molla Yemam, Dinberu

AU - Jang, Indong

AU - Yi, Chongku

N1 - Funding Information: This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future Planning (No. 2015R1D1A1A01060892 ). In addition, this study was supported by a Korea University Grant. Publisher Copyright: © 2020

PY - 2020/7/30

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N2 - 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.

AB - 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.

KW - Dimensional stability

KW - Epoxy resin mortar

KW - Microwave curing

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The effects of sand washing waste and microwave curing on the dimensional stability of epoxy mortar

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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