April 28, 2022
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244 ViewDuring the process of cement hydration, curing is the process of regulating both the pace and the amount of moisture that is lost from concrete—curing by continually moistening the surface that is exposed, preventing the surface from losing moisture. Creating a pond or spraying the area with water are two common strategies to achieve this goal. Curing is a process or operation that controls the loss of moisture from concrete after being placed in position or during concrete manufacturing products. This allows for more time for the hydration of the cement to take place. Curing can either occur after the concrete has been placed in position or during the manufacturing of concrete products. To achieve this result, water or curing agents are applied to the surface of the concrete by spraying, sprinkling, or otherwise applying them in such a way as to guarantee that the concrete surface is kept wet at all times. The strength increase of concrete is directly correlated to the amount of moisture that is prevented from evaporating from the body of the concrete.
Shading may be achieved by using a canvas that has been stretched on frames. This technique is often used on large concrete surfaces, such as road slabs, among other similar applications. When the weather is dry, this step is essential to shield the concrete from the damaging effects of heat, direct sunshine, precipitation, and wind. The primary objective of shading is to save the heat generated during the hydration process of cement so that, when applied in cold climates, it may prevent the concrete from freezing.
Ponding is a technique that is often used to cure flat surfaces like pavements and floors. This is because the soil and sand surrounding the concrete’s perimeter can maintain a pond of water. Ponding is not only an excellent approach for keeping the temperature of the concrete consistent throughout its whole, but it is also a perfect method for limiting the loss of moisture from the concrete. It is typical to practice to cure test specimens by submerging them in water after a completed substantial piece has been formed.
Curing may also include the regulation of temperature since temperature impacts the pace at which cement hydrates. This duration will depend on the needed qualities of the concrete, its intended application, and the ambient circumstances, including the surrounding temperature and relative humidity. Since the purpose of curing is essential to maintain the concrete’s hydration by limiting its loss of moisture during the time it is building strength, there are two techniques to cure concrete, one by preventing an excessive loss of moisture from the concrete for some time, such as by leaving formwork in place, covering the concrete with an impermeable membrane after the formwork has been removed, or by using a combination of such methods; or by continuously wetting the surface, thereby preventing the loss of moisture from it. Typically, this is achieved by ponding or sprinkling water over the soil’s surface.
