Research on workability parameters of CA mortar based on the rheological properties
ZHANG Lihua
HONG Jinxiang
ZHU Xiaobin
Abstract：To solve the problem of weak guidance of existing technical standards in CA mortar construction process,new workability control parameters were proposed by researching perfusion capacity,segregation and bleeding of CA mortar by using the rheology principle. It indicates that the fluidity and expansion curves are unable to infusion boundary and easy to perfusion boundary respectively when shear stress are 40.65 Pa and 23.13 Pa,the yield stress of 5.5 Pa is critical value of controlling segre-gation,and it is easy to segregate when yield stress is lower than the value. Too low fluidity(lower than 100 s)and too great ex-pansion degree(greater than 340 mm)lead to bleeding. Conclusions can provide theoretical reference for CA mortar construction.
Keywords：CA mortarrheological propertyworkabilitycontrol parameters
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( 44-47 )