Compressive Strength of Concrete Exposed to Alternate Carbonation and Freezing-Thawing Cycles
RAN Jin
ZHANG Jinxi
YANG Mijia
WANG Jiangang
Abstract：Based on carbonation-only test,freezing-thawing-cycle-only test and alternate test between carbonation and freezing-thawing cycles,relative compressive strength,relative dynamic modulus of elasticity and carbonation depth of concrete were measured and analyzed.Test data show that for the alternate actions between carbonation and freezing-thawing cycles,relative compressive strength of concrete is higher than that exposed to freezing-thawing-cycle-only process,but the increase is limited;its relative dynamic modulus of elasticity is lower than that exposed to freezing-thawing-cycle-only process;whereas its carbonation depth is larger than that exposed to carbonation-only process.The frost resistance and carbonation resistance of concrete decrease compared to that exposed to freezing-thawing-cycle-only and carbonation-only processes,respectively.Finally,a compressive strength fitting model subjected to the alternate actions between carbonation and freezing-thawing cycles is established,in which two independent variables (carbonation time and number of freezing-thawing cycles) are taken into account.
Keywords：concretecarbonationfreezing-thawingalternate actionrelative compressive strengthrelative dynamic modulus of elasticitycarbonation depthfitting model
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 517-521,542 )