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Title: The effects of moisture on the thermal properties of concrete between -80°C and 0°C
Author: Mohd Yusof, Kamarudin Bin
ISNI:       0000 0001 3413 8794
Awarding Body: University of Southampton
Current Institution: University of Southampton
Date of Award: 1984
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Samples of saturated moist-cured micro-concrete and pasta with vv/c ratios between 0.30 and 0.70 have been investigated and compared with samples of dry and rewetted paste between -80°C and 0°C. The freezable water in these pastes has been measured from the enthalpy difference between moist-cured and dry samples, and is significantly less than evaporable water contcnt. The NMR spectra of these pastes have been studied at temperatures down to -80°C and suggest that the eva- porable water is adsorbed and not free. Thermal strains of samples with different degrees of saturation between 0°C and -80°C have been measured and the effect of rewetted water also investigated. It is concluded that the physically adsorbed water which causes a large thermal strain in concrete paste comprises 75% of the total evaporable water. The permanent expansion of concrete paste during a thermal cycle only occurred in a rewetted, resoaked, fully moist-cured concrete paste.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available
Keywords: Concrete thermal properties