MEASURING AUTOGENOUS STRAIN OF CONCRETE WITH COR-RUGATED MOULDS
A reliable technique to quantify autogenous strain is a prerequisite for example to reliablycarry out numerical modelling of stress build-up in high performance concrete. The introduc-tion of a special kind of corrugated mould enables transformation of volume strain into linearstrain for fluid concrete, which not only realizes continuous monitoring of the autogenousstrain since casting, but also effectively minimizes the disturbance resulting from gravity,temperature variation and mould restraint on measuring results. Based on this measuringtechnique, this paper investigates the influence of material properties, entrapped air and sizeof the corrugated tube on the measuring results. The effect of bleeding water and measuringdirection horizontal or vertical-on the measurement results is also studied and the mecha-nism are discussed.
Qian Tian Ole Mejlhede Jensen
Department of Civil Engineering,Technical University of Denmark,Denmark;Jiangsu Academy of Building Department of Civil Engineering,Technical University of Denmark,Denmark
国际会议
南京
英文
1501-1511
2008-10-13（万方平台首次上网日期，不代表论文的发表时间）