Study on mechanical strength and water resistance of organosilicon waterproofing agent blended recycled gypsum plaster
In this study, organosilicon waterproofing agent blended recycled gypsum plasters (ROGPs) were prepared to determine their mechanical strength and water resistance. According to the results, the water to plaster ratio of ROGP increased steeply. Additionally, the mechanical strength and water resista...
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2021-06-01
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doaj-1dc6a86f6d6445d5861b68ed97567ceb2021-05-30T04:43:31ZengElsevierCase Studies in Construction Materials2214-50952021-06-0114e00546Study on mechanical strength and water resistance of organosilicon waterproofing agent blended recycled gypsum plasterZhixin Li0Kaidong Xu1Jiahui Peng2Jina Wang3Jianwu Zhang4Qingxiao Li5School of Material and Chemical Engineering, Henan University of Urban Construction, Pingdingshan 467036, PR China; Corresponding author.School of Material and Chemical Engineering, Henan University of Urban Construction, Pingdingshan 467036, PR ChinaCollege of Materials Science and Engineering, Chongqing University, Chongqing 400045, PR ChinaSchool of Material and Chemical Engineering, Henan University of Urban Construction, Pingdingshan 467036, PR ChinaSchool of Material and Chemical Engineering, Henan University of Urban Construction, Pingdingshan 467036, PR ChinaSchool of Material and Chemical Engineering, Henan University of Urban Construction, Pingdingshan 467036, PR ChinaIn this study, organosilicon waterproofing agent blended recycled gypsum plasters (ROGPs) were prepared to determine their mechanical strength and water resistance. According to the results, the water to plaster ratio of ROGP increased steeply. Additionally, the mechanical strength and water resistance of ROGP decreased abruptly as the waterproofing agent increased, thus indicating the waterproofing agent’s loss of water resistance. Correspondingly, the water to plaster ratio and mechanical strength of organosilicon waterproofing agent blended commercial gypsum plasters (COGPs) slightly increased and decreased, respectively. Furthermore, the water resistance of COGP increased, and the suitable waterproofing agent was 1.0 %. The analysis shows that the large aspect ratio of ROGP and long-chain polymers increase their water to plaster ratios, whereas their mechanical strength and water resistance decrease owing to the resulting large plate-shaped crystals and poor overlapping between the crystals in hardened ROGP. The loss of water resistance is consequence of the oxidation of Si-H in ROGP. Therefore, different mechanical strength and water resistance development trends could be observed in ROGP and COGP. In principle, this study will contribute to the efficient utilization of recycled gypsum plaster.http://www.sciencedirect.com/science/article/pii/S2214509521000619Recycled gypsum plasterOrganosilicon waterproofing agentMechanical strengthWater resistance |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Zhixin Li Kaidong Xu Jiahui Peng Jina Wang Jianwu Zhang Qingxiao Li |
spellingShingle |
Zhixin Li Kaidong Xu Jiahui Peng Jina Wang Jianwu Zhang Qingxiao Li Study on mechanical strength and water resistance of organosilicon waterproofing agent blended recycled gypsum plaster Case Studies in Construction Materials Recycled gypsum plaster Organosilicon waterproofing agent Mechanical strength Water resistance |
author_facet |
Zhixin Li Kaidong Xu Jiahui Peng Jina Wang Jianwu Zhang Qingxiao Li |
author_sort |
Zhixin Li |
title |
Study on mechanical strength and water resistance of organosilicon waterproofing agent blended recycled gypsum plaster |
title_short |
Study on mechanical strength and water resistance of organosilicon waterproofing agent blended recycled gypsum plaster |
title_full |
Study on mechanical strength and water resistance of organosilicon waterproofing agent blended recycled gypsum plaster |
title_fullStr |
Study on mechanical strength and water resistance of organosilicon waterproofing agent blended recycled gypsum plaster |
title_full_unstemmed |
Study on mechanical strength and water resistance of organosilicon waterproofing agent blended recycled gypsum plaster |
title_sort |
study on mechanical strength and water resistance of organosilicon waterproofing agent blended recycled gypsum plaster |
publisher |
Elsevier |
series |
Case Studies in Construction Materials |
issn |
2214-5095 |
publishDate |
2021-06-01 |
description |
In this study, organosilicon waterproofing agent blended recycled gypsum plasters (ROGPs) were prepared to determine their mechanical strength and water resistance. According to the results, the water to plaster ratio of ROGP increased steeply. Additionally, the mechanical strength and water resistance of ROGP decreased abruptly as the waterproofing agent increased, thus indicating the waterproofing agent’s loss of water resistance. Correspondingly, the water to plaster ratio and mechanical strength of organosilicon waterproofing agent blended commercial gypsum plasters (COGPs) slightly increased and decreased, respectively. Furthermore, the water resistance of COGP increased, and the suitable waterproofing agent was 1.0 %. The analysis shows that the large aspect ratio of ROGP and long-chain polymers increase their water to plaster ratios, whereas their mechanical strength and water resistance decrease owing to the resulting large plate-shaped crystals and poor overlapping between the crystals in hardened ROGP. The loss of water resistance is consequence of the oxidation of Si-H in ROGP. Therefore, different mechanical strength and water resistance development trends could be observed in ROGP and COGP. In principle, this study will contribute to the efficient utilization of recycled gypsum plaster. |
topic |
Recycled gypsum plaster Organosilicon waterproofing agent Mechanical strength Water resistance |
url |
http://www.sciencedirect.com/science/article/pii/S2214509521000619 |
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