Measurement and evaluation proposal of early age shrinkage of cement composites using shrinkage-cone

International Conference Building Materials, Products and Technologies

土木建筑工程

Kucharczyková, B.^1 ; Kocáb, D.^1 ; Rozsypalová, I.^1 ; Karel, O.^1 ; Misák, P.^1 ; Vymazal, T.^1

Brno University of Technology, Faculty of Civil Engineering, Veveí 331/95, Brno, Czech Republic^1

关键词: Cement composite;    Cement paste;    Early age shrinkages;    Experimental analysis;    Internal temperature;    Measurement evaluations;    New approaches;    W/c ratio;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/379/1/012038/pdf
DOI  :  10.1088/1757-899X/379/1/012038

学科分类：土木及结构工程学

来源: IOP

【 摘 要 】

The paper deals with an experimental analysis focused on the determination and evaluation of the early age shrinkage strain using Shrinkage-Cone. The measurements were performed on the cement pastes and mortars with a different w/c ratio. The authors propose a new approach to the measurement evaluation based on the determination of time-zero at the time of estimated initial setting determined as the time when the internal temperature of specimens started to rise. In this case, also the effect of the thermal expansion is taken into account in the evaluation.