Concrete is more complex than you might think. Have you ever wondered what curing is? What is the purpose of curing?
When water is added to cement, a chemical reaction starts called hydration. With time, the process of hydration transforms cement and water into calcium-silicate hydrate compounds. It is the fancy name of the glue that holds the cement together. It acts as a binding agent and holds the aggregates together, forming a solid, tough substance we use for roads, pavements, and buildings. During this process of hydration, other compounds are formed. However, they do not strengthen the cement as much as the calcium silicate compound.
It is necessary to cure concrete in order to maintain the vital process of hydration. Curing allows the hydration to continue by maintaining the moisture level deep within the concrete. It’s hard to believe that so much happens after the concrete has been laid. Concrete will continue to get harder, stronger, and denser if moisture and unhydrated concrete are present. Curing is the process that keeps cast concrete moist so the hydration process can continue. When you need Concrete Forest Of Dean, visit www.monstermixconcrete.co.uk/concrete-forest-of-dean/
The porosity of the concrete decreases as it becomes stronger. This is because newly laid concrete has a higher porosity than older concrete that has been hydrated for a longer period of time. The more porous the new concrete is, the faster moisture will evaporate from its surface. It lowers the levels of moisture inside, which are vital to maintain hydration. Concrete that dries too fast will lose its strength. This is why it’s important to never cover freshly cast concrete.