ABSTRACT

It can be seen that the 28 day strength of the non-cured specimens is about 22% lower than those water cured for 3 days. This reduction is similar to that of between 20-30% reported by other workers (11) who compared the 28 day cylinder strengths of non-cured and water cured specimens. Such reductions are, however, unlikely to be as great in a practical situation where the rate of drying of the bulk of the concrete will be far less than that of the 100 mm cubes. Nevertheless, under laboratory conditions the test is capable of distinguishing between the different curing regimes and between the different curing membranes.