C30自密实混凝土的配合比设计  

Mix design of C30 self-compacting concrete

作　　者：高德辉[1] 宋小软[1] 单文超 何世钦[1] 朱忠锋[1] 

机构地区：[1]北方工业大学建筑工程学院,北京100144

出　　处：《混凝土》2014年第5期93-96,共4页Concrete

基　　金：国家自然科学基金(51208006);北京市青年拔尖人才培养项目(CIT&TCD201304003);北京市自然科学基金(8122018)

摘　　要：采用北京石景山地区的原材料利用体积法进行C30自密实混凝土的初步配合比设计。通过试验明确所用胶凝材料和外加剂的相容性,进而确定外加剂的掺量。然后根据试配所表现的工作度进行配合比的调整及分析,最后考虑强度指标确定C30自密实混凝土的配合比。为了得到工作性能满足要求的自密实混凝土,具体介绍了对初步配合比的调整过程,为今后配制满足工作性能的自密实混凝土提供参考。Through the method of volume,the raw materials used in Shi jing shan district were used to prepare C30 self compacting concrete.The consistency of binding materials and admixture was confirmed by test, then mixing amount of admixture was determined. According to worked performance showed by stirring, the mix design was adjusted and analysed.Finally considering the strength index, the mix design of C30 self compacting concrete was determined.In order to get self-compacting concrete which meets the requirements of worked performance, this paper specifically described how to adjust initial mix proportion, and provided the reference for preparing C30 self compacting concrete which satisfied worked performance for the future.

关 键 词：自密实混凝土 流动性 扩展度 配合比设计 

分 类 号：TU528.062[建筑科学—建筑技术科学]