Study on Modification of Magnesium Oxychloride Cement

2nd International Symposium on Resource Exploration and Environmental Science

生态环境科学

Li, Lingxiao^1 ; Chen, Xiongmu^1 ; Zhao, Fengqing^1,2

Department of Chemical Engineering, Hebei University of Science and Technology, Shijiazhuang

050018, China^1

Hebei Engineering Research Center of Solid Waste Utilization, Shijiazhuang

050000, China^2

关键词: Cement paste;    Gfrp fibers;    Magnesium oxychloride cement;    Softening coefficients;    Waste glass;    Water-resistances;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/170/3/032132/pdf
DOI  :  10.1088/1755-1315/170/3/032132

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

In recent years, magnesium oxychloride cement (MOC) has drawn more and more attention, but its disadvantages of poor water resistance, brittleness, easy to absorb moisture limited its uses. Waste glass fiber reinforced plastic (GFRP) and additives were added into the MOC to improve its performance. The results show that waste GFRP fiber with the length of 5-10 mm has remarked contribution to the softening coefficient of the cement paste. When the addition is 2%, the softening coefficient of the cement increases by 24.95%. Compared to the blank, proper dosages of phosphoric acid, ferric phosphate and citric acid increase the softening coefficient of MOC from 0.461 to 1.026, 0.797 and 0.993 respectively.