10% of the white Portland cement and 90% talc and other materials mixed with the so-called "decorative white cement" is not cement? The addition of gypsum by white silicate cement clinker, the finely ground hydraulic cementitious material called white portland cement (white cement), the current white portland cement standard clearly defined white silicate Cement is allowed to add no more than 5% of the standard requirements of the mixed material. Cement should have plastic, hydraulic, durability and other properties. However, the market now sells a lot of talcum powder and a small amount of white cement mixed "decorative white cement" does not have the characteristics of cement. Talc is not a cementitious material, no hydraulic, can not produce mechanical strength, it will be mixed with a small amount of white cement material can not be considered cement.

It is understood that, in line with international standards, the relevant departments are revising the white portland cement national standards, has been formed for approval. In the revision of the standard process, the experts did not involve too much on the so-called "decorative white cement" definition and norms, because according to the existing standards, now on the market sales of "decorative white cement" most of the fundamental Can not be called cement.

The cement is a powder material, is the basic material of construction engineering, the use of wide, large amount, known as "the construction industry, food," said. Cement is not only used for construction, but also for water conservancy, roads, national defense, marine development and other projects, and can be used to save steel and wood, such as system sleeper, pit wood, pipe, pile, ship, pole and so on.

Cement varieties, if according to its chemical composition is Portland cement, aluminate cement, sulphoaluminate cement, fluoroaluminate cement. The largest amount of cement in the building is cement cement: Portland cement, ordinary portland cement, slag Portland cement, volcanic ash Portland cement, fly ash Portland cement. The foundation of the five major cement is Portland cement.