Influence of Polymer on Properties of Sulphoaluminate Cement Waterproof Mortar

E-ISSN： 1662-7482|2015|740|43-46

ISSN： 1660-9336

Source： Applied Mechanics and Materials, Vol.2015, Iss.740, 2015-04, pp. : 43-46

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Abstract

This paper studies on the effects of different contents of redispersible emulsion powder and cellulose ether on mechanical properties of sulphoaluminate cement waterproof mortar, water absorption rate and impermeability, observes the microstructure of cement mortar by SEM and discusses the mechanism of polymer effects on properties of cement mortar. The results show that: as to the influence on strength, the two kinds of polymers may cause the decrease of early strength, but have no influence on the later strength; about water absorption rate, two polymers can significantly reduce the water absorption rate of sulphoaluminate cement mortar, and cellulose ether is slightly more effective than that of redispersible emulsion powder; as to the influence on impermeability, cellulose ether works far better than redispersible emulsion powder, especially when cellulose ether content reaches 1.5‰ and more, the impermeability pressure of sulphoaluminate cement mortar can reach above 2.2MPa.