EFFECT OF SUPERPLASTICIZER TYPE ON EARLY AGE HYDRATION OF CEMENT

摘要：

Microstructures of early age hydration products of cement superplasticized with threetypical types of polycarboxylate ether type superplasticizer (PCE) were investigated and thenumerical eigenvalues of cement hydration products were analyzed. According toexperimental and analytical results, PCEs can accelerate hydration rate of cement minerals.Typically, acrylic acid type polycarboxylate based superplasticizers increase formation rate ofettringite, and maleic anhydride type polycarboxylate based superplasticizer speeds up theformation rate of monosulfoaluminate. Therefore, earlier hydration of cement and engineeringproperties of concrete are dominated by the type of PCE. Suitable choice should be madeaccording to application requirements of concrete engineering, and modification should bedone by blending retarders, air entraining agents or defoaming agents if needed.

作者: Y.Q.Jiang M.Z.Gong

作者单位: School of Materials Science and Engineering,Hohai University,China

会议类型: 国际会议

会议名称: 1st International Conference on Microstructure Related Durability of Cementitious Composites(首届与水泥基复合材料耐久性相关的微观结构国际会议)

会议地点: 南京

会议语种:英文

页码: 153-160

在线出版日期: 2008-10-13（万方平台首次上网日期，不代表论文的发表时间）