Impact of Wet and Air Curing Methods on Developing Compressive Strength in Concrete
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Abstract
Concrete curing is a process fulfilling compressive strength value for the material used. There are several techniques to cure concrete, such as ponding or immersion, curing the mold, plastic sheeting, sprinkling or spraying, curing compounds, and steam curing. The principle is to provide sufficient moisture to the concrete structure during the hydration reaction. This research aims to study the effect on compressive strength development of concrete under curing conditions in wet and air. The compressive strength of the sample, which was cured by a different method, was investigated by comparing with the rising trend of curing time and water consumption in the improving compressive strength of concrete in each curing time. The cylindrical concrete samples of 10 cm diameter and 20 cm height were cast to evaluate compressive strength at the curing duration of 3, 5, 7, 14, 21, and 28 days as 60 samples. They were compared compressive strength with a different curing condition between room temperature (air curing) and wet curing. As ACI standards, controlled samples had a compressive strength of 350 kg/cm2 at 28 days of curing. The results revealed that the wet-cured samples had more compressive strength than the air-cured samples, as 359.26 kg/cm2 and 311.46 kg/cm2 after 28 days of curing. These were the highest value of compressive strength according to the increase in curing periods of 0 to 28 days. It indicated that moisture was a vital variable in the compressive strength development of concrete due to the hydration reaction.
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