Abstract
This article studied the influence of the caustic soda flakes (CSF) phosphogypsum (Ard) activator on the properties and microstructure of hydration product generated by carbide slag (CS)-flyash (FA) system which used in high-grade highways pavement. Studies have shown that: the main hydration products generated by carbide slag-flyash system are calcium silicoaluminate hydrate (C-A-S-H) and ettringite (AFt), but the reaction of hydration is slow and the content of hydration products is low. However, the caustic soda flakes-phosphogypsum can promote the formation of C-A-S-H and AFt, so can improve the strength and engineering application of the system effectively.
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