The influence of pretreated phosphogypsum on water resistance of composite binders containing phosphogypsum (CBPG) was investigated. Six pretreatment processes in total were conducted on phosphogypsum using autoclaving and calcination. Three parameters of the CBPG mortars were comparatively studied to evaluate their water resistance: the ratio of the compressive strength in the wet-saturated state to that in the dry state (W/D); weight loss after static water attack (WLSW); and weight loss after flowing water attack (WLFW). The crystalline phases could be transformed and the impurities could be effectively purified for original phosphogypsum by the pretreatment process. Therefore, water resistance of the CBPG mortars from pretreated phosphogypsum was improved significantly when compared to that of the mortars from original phosphogypsum. Regarding the weight loss and strength after static or flowing water attacks, WLSW and WLFW could effectively evaluate the water resistance of CBPG mortars, when compared with traditional evaluation by W/D.
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April 2012
Research Article|
April 01 2012
Water resistance of composite binders containing phosphogpysum with different pretreatment processes
Tingyan Ren;
Tingyan Ren
MSc student, School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan, China
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Jing Zhu;
Jing Zhu
PhD student, School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan, China
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Wanchao Liu;
Wanchao Liu
PhD student, School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan, China
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Xinfeng Zhu;
Xinfeng Zhu
PhD student, School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan, China
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Jiakuan Yang
Jiakuan Yang
Professor and Vice Dean, School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan, China
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Publisher: Emerald Publishing
Revision Received:
March 15 2011
Revision Requested:
June 02 2011
Accepted:
August 12 2011
Online ISSN: 1751-7605
Print ISSN: 0951-7197
ICE Publishing: All rights reserved
2012
Advances in Cement Research (2012) 24 (2): 111–120.
Article history
Revision Received:
March 15 2011
Revision Requested:
June 02 2011
Accepted:
August 12 2011
Citation
Ren T, Zhu J, Liu W, Zhu X, Yang J (2012), "Water resistance of composite binders containing phosphogpysum with different pretreatment processes". Advances in Cement Research, Vol. 24 No. 2 pp. 111–120, doi: https://doi.org/10.1680/adcr.11.00014
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