Substantiation of Reference Method For Determining Concrete's Freeze-Thaw Resistance

3rd International Conference on Competitive Materials and Technology Processes

Nikolskiy, S.^1 ; Pertseva, O.^1

Peter the Great St. Petersburg Polytechnic University, St. Petersburg, Russia^1

关键词: Freeze-thaw cycling;    Freeze-thaw resistance;    Freezing and thawing cycle;    Linear compression;    Reference method;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/123/1/012047/pdf
DOI  :  10.1088/1757-899X/123/1/012047

来源: IOP

【 摘 要 】

It has been analytically proved that using concrete's rate of set e as a measure of damage, instead of decreasing of tensile strength R, increases freeze-thaw resistance's accuracy of estimation a lot under otherwise equal conditions by the time of freeze-thaw cycling. Also it has been experimentally shown that ratio of relative decreasing R toin direction, perpendicular to compression, is assumed to be independent on values R andfor a given concrete and on the ways of achieving them during mechanical or freeze-thaw cycling. Taking this into account patented methods for estimation of concrete's freeze-thaw resistance as per values R and e received after freezing and thawing cycles of some specimens and their postliminary failure by linear compression was substantiated.