基于流变学的混凝土可泵性计算方法研究与应用  

Investigation and Application of Rheology-based Methods for the Concrete Pumpability Assessment

作　　者：占羿箭 ZHAN Yijian(Engineering General Institute of Shanghai Construction Group Co.Ltd.,201114,Shanghai,PRC)

机构地区：[1]上海建工集团工程研究总院,上海201114

出　　处：《江西科学》2018年第3期484-490,527,共8页Jiangxi Science

摘　　要：简要回顾了混凝土可泵性评估方法,重点介绍了近来基于流变学的计算模型研究进展。将不同计算方法应用于超高建筑混凝土泵送案例,展示了基于流变学的计算模型的准确度。使用基于流变学的计算模型,通过参数化分析定量研究了泵送高度、泵管直径、混凝土流变性质等因素对可泵性的影响,从而为混凝土泵送性能及施工工艺的优化提供理论支撑。Methods for the assessment of concrete pumpability are briefly reviewed,in particular,the recent progress in rheology-based computation models is introduced. By applying different methods to the analysis of specific pumping cases of super high-rise building construction,the accuracy of rheology-based computation model is demonstrated. Using the rheology-based model,parametric study is conducted to investigate the influence of pumping height,pipe radius and concrete rheological properties on pumpability,which supports the improvement of concrete pumping properties and construction techniques.

关 键 词：超高建筑 自密实混凝土 可泵性 流变学 

分 类 号：TU528[建筑科学—建筑技术科学]