Drying shrinkage inhibitor for cement admixture

摘要

Composition 1 is a drying shrinkage inhibitor for cement admixture containing alkoxy polyoxyalkylene fatty acid ester.The drying shrinkage and the cracking of the hardened cement body are remarkably suppressed and the strength can be enhanced. Therefore, it is suitable for use in durable cements, mortar, concrete, etc., and is suitable for use in buildings, products, etc., which are difficult to repair and repair, such as buildings for nuclear power plants, shrines, and buildings, as well as high rise, high rise external walls, bridge piers and Gulf roads.1(u5f0fu4e2du3001R1: alkyl, hydroxy alkyl group, alkenyl group or hydroxy alkenyl group of 7 toR2: alkyl or alkenyl groups of 1 to 22 carbonM: 2 to 4 integersN: 1 ~ 100)