期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：295
期号：3
页码：1-8
DOI：10.1088/1755-1315/295/3/032076
出版社：IOP Publishing
摘要：The effect of limestone micro-powder on the basic properties of composite cement grout, including fluidity, compressive strength, temperature rise, were studied by taking cement, slag, fly ash, zeolite as initial cementitious material. The methods of XRD, SEM and TG-DSC were carried out to analyze hydration products and mechanism of composite cement grout. The experiment results showed adding 10% limestone micro-powder can reduce grout internal shearing stress, improve grout fluidity, promote hydration reaction, raise reaction rate and hydration temperature, and make the exothermic peak forward; limestone micro-powder can fill the pores of cement paste, increase the density and the compressive strength. The XRD and TG-DSC pattern showed limestone micro-powder was not involved in hydration reaction of composite cement grout.
