聚羧酸系酯醚复配减水剂母液的制备及对水泥水化过程的影响

Preparation of polyester-type and polyether-type composite cement water reducing agent compound and the influence of the hydration process of cement

通过相互复渗技术将自制的聚酯型(PCS-1)和聚醚型(PCS-2)两类减水剂母液复配,系统地研究了两组分掺量变化对其性能的影响。利用傅立叶变换红外光谱仪(FTIR)、X射线衍射(XRD)、热重(TG-DTG)和比表面(BET)研究了加入复配母液的硬化水泥石微观结构。结果表明,复配母液减水剂的加入促进了水泥水化,减小了水泥石的比表面积、孔容和孔径。

The compound water reducing agent was synthesized using home-made polyester type（ PCS-1） and polyether type（ PCS-2） as raw material through mutual infiltration technique. The property of compound of the two kinds of superplasticizer liquid was sys-tematically researched. The microstructure of mixing water reducing agent cement paste were analyzed by x-ray diffraction（ XRD ）, fourier-transform infrared spectroscopy （ FTIR ）, thermal gravity analysis （TG - DTG ） and specific surface area （ BET ） . The results show that the composite water reducing agent can accelerate the cement hydration and reduce specific surface area,pore volume and pore size of the cement paste.