definition
When the raw material of the appropriate composition is burned to partial melting, the obtained calcium silicate is used as the main component, and the clinker with less iron content is added with an appropriate amount of gypsum, and the white hydraulic cementitious material is obtained by grinding, which is called white silicic acid. Salt cement (referred to as white cement).
When grinding cement, it is allowed to add limestone not exceeding 5% by weight of the cement.
Note: It is allowed to add grinding aid to the cement without impairing the performance of the cement, and the amount added is not more than 1% by weight of the cement. During the incorporation period, he must be tested and submitted to the Ministry of Construction Materials for approval.
Grading
(1) Label: Three labels of 325, 425, and 525.
(2) Whiteness: The minimum whiteness is not less than 87.
use
White cement, white Portland cement, referred to as white cement, is a hydraulic cementitious material made by adding white Portland cement clinker to gypsum and grinding. It is a kind of cement, but it is higher in marking than ordinary Portland cement and it solidifies quickly. Its main feature is that the amount of slag micropowder is 85-90%, and the amount of alkaline additive is not more than 5%. The whiteness and strength of the mixed white cement are not lower than that of the raw white cement, and the early strength is also significantly improved. White cement is mostly used for decoration, and its manufacturing process is much better than ordinary cement. It is mainly used for the gap of the white porcelain tile, and is generally not used for the wall surface because the strength is not high. Available in the building materials market or in decorative materials stores.
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