Hydraulic cement set-accelerating admixtures incorporating glycols

(57) A summary and composition The new hardening promotion nature mixture agent for hydraulic cement composites is indicated. That is, it is the mixture agent which incorporated the glycol of a well-known hardening accelerator and low molecular weight of a certain kind, for example, glycerol, and ethylene glycol. Effect It is found out that it is effective for a degree surprising to reduction of hydraulic cement, mortar, and the initial cure time of concrete, and it is advantageous as a cold cure catalyst.