Abstract
The microstructure of cement composite soil was studied with the scanning electron microscopy (SEM) experiment, the microcosmic mechanism of the strength increasing were tested in the lab with different additive quantity,different curing periods. The interaction of the cement composite soil with soil,water,cement grout were analyzed,the experimental results show that: the pumice to join makes the composite cement soil strength first increases then decreases, and there is an optimal dosage of 8%, along with the growth of the curing age, after 28 days, hydration reaction continues, cement composite soil age 60 days of gelling material than 28 days.
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