By compounding jd with hpp, the " overlapping effect " of two kind superplasticizers was fully manifested . the compatibility of jd with cement and keeping slump value were more improved through this compounding way . meantime, the bleeding and segregation of hpp were overcome too jd和hpp复合使用,可充分发挥高效减水剂的“叠加效应”,进一步提高jd与水泥的适应性,坍落度保持性能,也克服了氨基磺酸盐高效减水剂泌水离析等缺陷。