Prediction of Freeze-thaw Resistance of Concrete SCHOOL OF ARCHITECTURE, LANDSCAPE AND CIVIL ENGINEERING UNIVERSITY COLLEGE DUBLIN A project submitted in part fulfilment of the requirements for the degree of Bachelor of Engineering By Barry Kelly & Paul Murphy 23 rd April 2010
Prediction of Freeze-thaw Resistance of Concrete
May 05, 2023
Freeze-Thaw action degrades concrete mainly due to the hydraulic pressures associated with
the expansion of water into ice which requires a greater volume inside the concrete. The
purpose of the research was to investigate how different characteristics of concrete mixes
affect the resistance that concrete has to freeze-thaw degradation.
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The concrete mixes were tested with a CDF machine which subjected the concrete to 28 12- hour freeze-thaw cycles. The test surface of the samples was also immersed in 3% salt solution to replicate the effect of de-icing salt. By measuring the scaling after 8, 22 and 28 cycles, the different freeze-thaw resistance from each of the mixes could be quantified. The samples were also tested with an ultrasonic pulse at the same intervals to investigate if the velocity through the concrete was related to the degradation.
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