Experimental determination of freeze-thaw resistance in self-compacting concretes

25th International Conference and Meeting of Departments, CONSTRUMAT 2019

Kocáb, D.^1 ; Liovský, M.^2 ; ítt, P.^1

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

Svoboda A Syn S.r.o., Jahodová 524/62, Brno, Czech Republic^2

关键词: Basic principles;    Dynamic young's modulus;    Experimental determination;    Freeze-thaw cycles;    Freeze-thaw resistance;    Resonance methods;    Splitting strength;    Ultrasonic pulse velocity tests;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/549/1/012019/pdf
DOI  :  10.1088/1757-899X/549/1/012019

来源: IOP

【 摘 要 】

The paper describes the determination of freeze-thaw resistance in self-compacting concretes and compares several test methods used for this purpose. The basic principle of testing freeze-thaw resistance is the observation of changes, in this case the loss of certain properties, in concrete attacked by freeze-thaw cycles. This paper documents measurements of tensile strength, tensile splitting strength, and dynamic Young's modulus measured by the ultrasonic pulse velocity test and resonance method. The outcome of the experiment is an evaluation of how suitable each test is for determining the freeze-thaw resistance of self-compacting concrete.