| Abstrakt: |
The self-setting mortar is a kind of ultra-low strength flexible material which prepared by cement, bentonite, sodium carbonate, and retarder etc. The research was based on Xiangyang city east-west axis project and orthogonal means was used, it studied the influence of cement, flyash, bentonite and dedicate super slow setting admixture dosage on strength, setting time and impervious performance. Finally, according to the design requirements, one kind of super slow setting flexible material with 7d compressive strength not exceeding 1.0MPa,28d compressive strength not exceeding 2 MPa, initial setting time not less than 48 h, final setting time not exceeding 75h, anti-permeability not 1x10-5cm/s was prepared. [ABSTRACT FROM AUTHOR] |
