Effect Of Curing On Concrete Strength

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Date
2015-04-28
Authors
Magzoub Ahmed, Faiga
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UOFK
Abstract
Concrete may develop certain problems in hot weathers both in fresh and hardened states. Engineer’s have to investigate such problems. This study is intended to investigate the effectiveness of using different curing techniques in the hot and dry environment of the Sudan, where temperature fluctuates up to 50 OC (120 OF). The investigation included: (1) Total immersion in water. (2) Application of water through saturated burlaps. (3) Using liquid membrane curing compound. (4) Using polythene sheets. (5) Allowance to dry in air (without curing). (6) Water curing for the first 3 – days and then left dry. (7) Water curing for the first 7 – days and then left dry. (8) Water curing for the first 14 – days and then left dry. (9) Water curing after 3 –days of initial drying in air. (10) Water curing after 7–days of initial drying in air. (11) Water curing after 14 –days of initial drying in air. This thesis includes six chapters. The first is an introduction to concrete and curing. The second deals with concrete materials and properties in both fresh and hardened states. The third presents problems of concreting in hot weather. The fourth outlines the concrete mix design and Experimental program and laboratory test results for compressive, tensile and flexural strengths. The fifth deals with result presentation and discussion of the data.The last chapter gives conclusion and recommendations.
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