Cement stability test, according to GB / T 750-1992 conduct. Testing process is the use of standard cement paste consistency were, be made into a certain shape (diameter 70 ~ 80mm, center thickness lOmm, tapered edge) test cake, put people inside the boiling water boiled 4h, such as boiled cake by the naked eye test no cracks were found, when checking with a ruler and no bending phenomenon cement bricks, is called stability qualified; on the contrary, was unqualified. Decorative cement commonly used in the decorative surface of the building, the construction is simple, easy modeling cement, easier to maintain and cheaper prices. There are several varieties: (1) white Portland cement: calcium silicate as the main ingredient, add a small amount of iron Portland cement clinker and the amount of color from finely ground gypsum. (2) Color portland cement: the white Portland cement and clinker quality white plaster, mixed with pigments, additives common ground together. Commonly used color mixing pigments iron oxide (red, yellow, brown, black), manganese dioxide (brown, black), chromium oxide (green) white cement, cobalt blue (blue), ultramarine blue (indigo), peacock blue (navy), carbon black (black) and the like. Decorative cement and portland cement like cement grade, the same construction and maintenance, but is easier to contamination, equipment tools must be clean. White cement | Wuhan cement (certified) | Enshi cement provided by the Hongshan District of Wuhan pavilion cement operation. Hongshan District of Wuhan pavilion cement business unit (www.whltsn.com) (www.hbltsn.com) was Wuhan, cement and products leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum Limits to meet customer needs. Wuhan cement leadership with the staff warmly welcome all inquiries negotiations to create a better future Wuhan cement.