ADMIXTURE AND CEMENT COMPOSITION

PROBLEM TO BE SOLVED: To increase both the short-term strength and long-term strength of cement by mixing a trialkanolamine and diethylene glycol in the cement. SOLUTION: The trialkanolamine(TAA) is preferably triisopropanolamine, and 0.003-0,04 pts.wt. TAA and 0.01-0.06 pt.wt. diethylene glycol(DEG), per 100 pts.wt. cement are preferably used. A 0.02-0.1 pt.wt. admixture containing TAA and DEG is appropriately used per 100 pts.wt. cement. Various types of Portland cement such as ordinary Portland cement and high early strength Portland cement and mixed cement obtained by blending these types of cement with blast furnace slag, etc., are used as cement. Portland cement clinkers such as ordinary Portland cement clinker and high early strength Portland cement clinker are used as clinker. The objective cement composition having increased strength is obtained by mixing and communicating the cement clinker and the admixture in the production of cement.