Effect of addition of SAP and magnesia expansive agent on properties of mortar
HU Yuqing
XING Dejin
ZHANG Dunfu
ZHANG Bo
LIU Yuanqiang
Abstract：This paper studies the effect of SAP curing agent and magnesia expansive agent on properties of mortar. The results show that:the admixture can reduce the autogenous and dry shrinkage,improve the frost resistance of mortar. At the same time mixing will increase the cohesiveness of mortar and reduce the fluidity. Adding SAP by pre-absorption method,when the water quality account 5% of cement,magnesia expansive agent account 8% of cement,the good mixing effect appears. This means can reduce the autogenous shrinkage of mortar and improve the frost resistance of cement mortar effectively. Furthermore it has no side-effect on the compressive strength of mortar.
Keywords：super-absorbent polymer(SAP)magnesia expansive agentfluidityautogenous-shrinkagedry-shrinkagefrost resis-tance
Publication Date：2018-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 1-3,8 )