Effect of M/P and Borax on the Hydration Properties of Magnesium Potassium Phosphate Cement Blended with Large Volume of Fly Ash  

作　　者：LIU Rmlqing YANG Yuanquan SUN Sihui 刘润清;YANG Yuanquan;SUN Sihui(School of Materials Science and Engineering, Shenyang Ligong University;Faculty of Infrastructure and Engineering, Dalian University of Technology)

机构地区：[1]School of Materials Science and Engineering,Shenyang Ligong University,Shenyang 110159,China [2]Faculty of Infrastructure and Engineering,Dalian University of Technology,Dalian 116024,China

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2018年第5期1159-1167,共9页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the National Natural Science Foundation of China(No.51472168);Natural Scientific Foundation of Liaoning Province(No.201602646);Open Fund from Liaoning Key Laboratory of Advanced Processing Technology for Metal Materials,Shenyang Ligong University,the Postdoctoral Research Foundation of Shenyang Ligong University

摘　　要：The effect of the borax content and magnesia to phosphate ratio（M/P） on the hydration properties of the magnesium potassium phosphate cement（MKPC） with large volume of fly ash was investigated, and a five-hydration-stage for MKPCs was proposed. The results show that MKPC sets rapidly with less than 8% of borax, which is unfavorable to the application of MKPC on construction. Adding more than 8%（including 8%） of borax results in a secondary hydration peak for MKPC, in which the process of hydration can be divided into five stages, namely, pre-induction period, induction period, acceleration period, deceleration period and stable period. M/P ratios could not change the multi-step reactive stages but higher M/P ratios could accelerate the hydration. Borax tends to impact the formation of Mg-containing hydrated products.The effect of the borax content and magnesia to phosphate ratio（M/P） on the hydration properties of the magnesium potassium phosphate cement（MKPC） with large volume of fly ash was investigated, and a five-hydration-stage for MKPCs was proposed. The results show that MKPC sets rapidly with less than 8% of borax, which is unfavorable to the application of MKPC on construction. Adding more than 8%（including 8%） of borax results in a secondary hydration peak for MKPC, in which the process of hydration can be divided into five stages, namely, pre-induction period, induction period, acceleration period, deceleration period and stable period. M/P ratios could not change the multi-step reactive stages but higher M/P ratios could accelerate the hydration. Borax tends to impact the formation of Mg-containing hydrated products.

关 键 词：MKPC hydration properties M/P borax process of hydration 

分 类 号：TQ172.1[化学工程—水泥工业]