Investigating and optimizing the mix proportion of sustainable phosphate-based rapid repairing material

被引：23

作者：

Feng Lei ^{[1
]}

Chen Xi-qing ^{[1
]}

Wen Xiao-dong ^{[1
,2
]}

Zhang Zheng-ya ^{[1
]}

Shou Lv-yan ^{[1
]}

机构：

[1] Ningbo Univ Technol, Sch Civil & Transportat Engn, Ningbo 315211, Zhejiang, Peoples R China

[2] Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2019年 / 204卷

关键词：

MPC; LG-MgO; CFB fly ash; Multi-objective optimization; Waste management; MAGNESIUM-POTASSIUM PHOSPHATE; WATER RESISTANCE; CEMENT; STABILITY; MORTARS; PRODUCT; ACID; SLAG;

D O I：

10.1016/j.conbuildmat.2019.01.195

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

For solid waste disposal and cement consumption reduction, sustainable phosphate-based rapid repairing materials (sust-MPC) were prepared with MgO-containing by-products (LG-MgO) and circulating fluidized bed (CFB) fly ash. The effects of various mix proportions on the fluidity, setting time and mechanical properties of sust-MPC were investigated. Based on that, mix proportion optimization procedure has been developed according to the multi-objective comprehensively considering. The results showed that the MgO to KDP ratio (M/P) was the most influential parameter on the fluidity, whereas the Borax dosage (B/MPF) and Water-to-binder ratio (W/MPF) were the dominant factors on the setting time and 1-h mechanical properties, respectively. Yet, the effect of CFB fly ash addition (CFB/MPF) was relatively small. Finally, the performance comparisons of sust-MPC and conventional MPC were carried out. Examined properties included basic properties, adhesion strength and microstructure, etc. Overall, sust-MPC has shown a better behavior. These positive results indicated that sust-MPC could be a promising alternative in developing sustainable construction material and waste management as well. (C) 2019 Elsevier Ltd. All rights reserved.

引用

页码：550 / 561

页数：12

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