硅酸盐学报2017，Vol.45Issue(5)：708-716,9.DOI:10.14062/j.issn.0454-5648.2017.05.17
新拌水泥基材料的流变特性、模型和测试研究进展
Rheological Properties, Models and Measurements for Fresh Cementitious Materials-A Short Review
摘要
Abstract
Fresh cementitious materials are a typical yield stress fluid.It is composed of many solid particles with different sizes,which the size distribution is from a few sub-microns to several centimeters.When it is sheared,the fluid endures two opposite effects,which can lead to shear thinning and shear thickening,respectively.The rheological properties of the fluid are determined jointly by these two effects.The rheological mechanisms,models,and some measurement issues were summarized.Several typical rheological models,including the Bingham model,the modified Bingham model and the Herschel-Bulkley model,etc.were discussed.The features,conditions and ranges of models were classified and summarized.The volume fraction of solid particles and shear rate are the two main factors for rheological models.However,when a nonlinear relationship between shear stress and shear rate exists,sometimes it is difficult to build the rheological models based on the observed data.Some new modeling methods were discussed.In the field of computational simulation,the combination of computational fluid dynamics with discrete element method can be applied to simulate the rheological properties of cementitious materials more precisely.关键词
新拌水泥基材料/流变特性/流变机理/流变模型/测试方法Key words
fresh cementitious materials/rheological property/rheological mechanism/rheological model/measuring methods分类
土木建筑引用本文复制引用
刘豫,史才军,焦登武,安晓鹏..新拌水泥基材料的流变特性、模型和测试研究进展[J].硅酸盐学报,2017,45(5):708-716,9.基金项目
国家国际科技合作专项(2015DFA50880)及国家自然基金No.U1305243项目资助. （2015DFA50880）
