A durability improving agent for cement compositions and a method for improving durability of cement compositions.

摘要

Durability-improving agent for hydraulic cement compositions which comprises one or more of the compounds of the general formula: <CHEM> wherein R<1> and R<2> each independently is a hydrogen atom or an alkyl group, X is a group of the formula -CH2CH2O-, Y is a group of the formula -CH2CH(CH3)O- or a group of the formula -CH(CH3)CH2O-, m is an integer of 0 or 1-4, n is an integer of not less than 1, the sum m + n is an integer of 1-30, and X and Y are arranged in an optional order; hydraulic cement compositions comprising a compound of formula (I);method for improving hydraulic cement compositions by incorporating a compound of formula (I); use of a compound of formula (I); as durability-improving agent, carbonation inhibitor and/or freeze-thaw durablity-improving agent for the preparation of cement compositions; and process for preparing hydraulic cement compositions by incorporating a compound of the formula (I).