In order to meet the basic performance requirements of sleeve grouting material
the fixed water binder ratio is 0.24 and the binder sand ratio is 1︰1. The benchmark mix proportion is determined by changing the content of water reducer and defoamer. The effects of fly ash
silica fume and mineral powder on the initial fluidity
30 min fluidity and compressive strength of grouting material at each age are studied. The results show that the combination of fly ash and mineral powder has the least influence on the compressive strength and is the most beneficial to the fluidity of grouting material; The combination of silica fume and mineral powder has the greatest impact on the later compressive strength of grouting material
but the fluidity will decrease when the silica fume content is too large. When the silica fume content is 7.5% and the mineral powder content is 7.5%
the fluidity of the grouting material is good
with the strength of 52.4 MPa in one day
76.9 MPa in three days and96.5 MPa in twenty-eight days.
LIU F, ZHENG M, YE Y. Formulation and properties of a newly developed powder geopolymer grouting material[J]. Construction and Building Materials, 2020, 258:120304.
JIN S, ZHANG J, HAN S. Fractal analysis of relation between strength and pore structure of hardened mortar[J]. Construction and Building Materials, 2017, 135:1-7.