Preparation of polyester-type and polyether-type composite cement water reducing agent compound and the study on the compatibility of cement
WU Fenglong
SONG Jin
LU Yulun
Abstract：The compound water reducing agent was synthesized using home-made polyester type(PS-1)and polyether type (PS-2)as raw material through mutual infiltration technique. The influence of mix ratio of PS-1 and PS-2 on the compatibility of cement with different kinds was systematically researched. The molecular structures of two kinds of superplasticizer liquid were characterized and analyzed by Fourier-transform infrared spectroscopy(FTIR). The microstructure of hardened cement paste mixing water reducing agent were analyzed by x-ray diffraction(XRD)and thermal gravity analysis(TG-DTG). The results show that the composite water reducing agent chain segment containing ester base,amino sulfonic acid,sulfonic acid group,hydroxyl and other functional groups. When the mix ratio of PS-1 to PS-2 is 3:2,there are good compatibility for all types of cement. Besides,the compound water reducing agent can delay the cement hydration within 1 d.
Keywords：polycarboxylate water reducing agentpolyester-typepolyether-typecompoundcompatibility
Publication Date：2018-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 42-46 )