INFLUENCE OF CURING CONDITION AND WATER CEMENT RATIO ON MECHANICAL PROPERTIES OF CONCRETE IN HIGH TEMPERATURES

Influence of water content on properties of concrete in high temperatures Part 1

Abstract

 In this paper, the influences of the curing conditions and water cement ratios on the mechanical properties at high temperatures were considered from the results of the compressive tests. The water cement ratios of specimens were 65% ～ 40%. The specimens were cured with 3 methods: air-dried, oven-dried and sealed. The results obtained in this study are as follows:
 (1) The influence of curing conditions on the compressive strength is clear at 100°C.
 (2) The strength of sealed specimens dropped sharply between 400°C and 500°C
 (3) The influence of water cement ratio is clear between 400°C and 600°C.