According to the characteristics of granular soil, the technological requirements of the specialpurpose cement for stabilizing granular soil are pat forward to meet the demands of implementation of highway base engineering. A kind of slow-setting and slight-expansive cement is developed by the cross experiment method in slag-clinker-gypsum-alkaline system, the final setting time of the cement can be prolonged to 8 h, and it has properties of low dry shrirkage , high flexural strength and good crack resistance. The strength of granular soil stabilized by the cement is increased by 20% compared with that stabilized by Chinese 425-Grade slag cement.
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