APPLICATION STUDY OF VISCOSITY REDUCING TYPE SUPERPLASTICIZERS FOR LOW WATER-BINDER RATIO CONCRETE

摘要：

In low water/binder ratio concrete such as high-strength concrete (HSC) or self compacting concrete (SCC), concrete workability, especially pumpability and finishability,decreases due to high viscosity caused by its mixture components and proportion. It is considered that reduction of concrete viscosity is significantly advantageous for placement or construction of HSC/SCC. Therefore, we try to apply viscosity reducing type superplasticizer to low water-binder ratio concrete. As the results, it is found that the newly developed superplasticizers can reduce the viscosity of cement paste in concrete, and the time to achieve 50cm slump-flow, an index of concrete workability can be reduced. Accordingly, it is confirmed that application of the viscosity reducing type superplasticizers is efficacious in workability improvement of low water/binder ratio concrete.

作者: Tomomi Sugiyama Toshimi Matsumoto Akira Ohta

作者单位: Development Center I,BASF Construction Chemicals Asia pacific Development Center I, BASF Construction Chemicals Asia pacific

会议类型: 国际会议

会议名称: 第二届自密实混凝土设计、性能及应用技术国际研讨会(2nd International Symposium on Design,Performance and Use of Self-Consolidating Concrete SCC2009-China)

会议地点: 长沙

会议语种:英文

页码: 296-302

在线出版日期: 2009-06-05（万方平台首次上网日期，不代表论文的发表时间）