Cure cement

Cement is a binder that reacts chemically with water. During curing, the properties and resulting processes must be taken into account. Depending on the use of the cement, strict standards must be adhered to.

Concrete is found almost everywhere

Cement is probably the most versatile building material that we currently know. In principle, our entire society, as we know it, is based on cement. Without cement, buildings would not be in the shape we know today, and the infrastructure would not exist either. Here are the most important application examples of cement:

  • concrete
  • Mortar (cement mortar)
  • Tile adhesive (cement tile adhesive)
  • Plaster (cement plaster)

The curing of cement - a chemical process

Everywhere the hardening of the cement has to be considered, which takes place during the chemical reaction between the cement components (Portland clinker) and the mixing water. For cement in plaster or in tile adhesive, the associated rules and regulations are not so strict. But with concrete.

During curing, the cement grows needle-shaped and harder. This achieves the high strength. However, curing the cement is not a process that would be completed within a shorter and manageable time. The hardening of cement can take many years.

Cement may take many years to harden

A construction project that had to take this fact into account, which was the Hoover dam. This famous US dam is not made of concrete that would have been cast in one piece. Rather, many individual cuboids had to be poured, which were then joined together. If the dam had been cast in one piece, it would not have hardened today.

Specifications for curing cement, for example in concrete

Therefore, when curing cement or concrete also not specified, within which period he would be cured. Instead, a certain period is chosen within which the cement or concrete must have reached a clearly defined minimum hardness. That's 28 days, or four weeks, and the corresponding DIN or DIN EN shows how far the cement must have hardened by then.

Cement in other applications

For other projects, this high accuracy is less important. Here is an example of the grouting of tiles with tile mortar called. The joints are slammed. As soon as the cement begins to set, the excess grout is washed out. This can be recognized by the fact that the cement is initially wet-shining and later looks earthy and dull. Depending on the building material, which is processed with cement, the moisture level must be permanently controlled for proper curing. The buzzword here is the loss of concrete.

Tips & Tricks

Although cement is an extremely popular and almost ubiquitous building material, many people know little about it. For example, cement can not be stored indefinitely. Shelf life is even very limited. Even the disposal of cement follows different regulations.

Video Board: How To Cure Concrete _Tips from JK Lakshmi Cement