There is no need to cure the concrete after backfilling, as long as the concrete remains wet after final solidification.

Concrete, abbreviated as concrete (tóng): refers to the general name of engineering composite materials whose aggregates are bonded into a whole by cementing materials. Generally speaking, the term concrete refers to cement as cementing material and sandstone as aggregate; Cement concrete, also known as ordinary concrete, is made by mixing and stirring water (including admixture and admixture) in a certain proportion, which is widely used in civil engineering.

Concrete has the characteristics of abundant raw materials, low price and simple production technology, so its consumption is increasing. At the same time, concrete also has the characteristics of high compressive strength, good durability and wide range of strength grades. These characteristics make it widely used, not only in various civil engineering, but also in shipbuilding, machinery industry, marine development, geothermal engineering and so on. Concrete is also an important material.