Witton Cement Group Co., Ltd. Share: classification of expansive cement special cement: volume expansion during hardening cement, according to the mineral composition, the Chinese expansion into silicate cement, aluminate cement expansion, sulphoaluminate Class expansive cement and calcium hydroxide expansive cement. Portland cement expansion, alunite expansive cement, iron expansive cement, magnesium cement expansion, K-type expansion are silicate cement expansive cement. Such cement is Portland cement in general, adding a variety of expansion components grinding together. As with alumina cement and gypsum as an expansion component, the amount added to Portland cement, Portland expansive cement can be obtained. Bauxite expansive cement plaster belong aluminate cement expansion, usually mixed with the right amount of alumina cement plaster and lime common ground together. Sulphoaluminate sulphoaluminate expansive cement clinker by adding an appropriate amount of gypsum common ground together. General expansion of the value of smaller cement, shrinkage compensated mortar can be formulated and concrete for structural reinforcement, pouring machine base or anchor bolts, jam, repair leaky cracks and holes, and underground buildings waterproof layer. Value greater expansion of cement, also known as self-stressing cement, used in the preparation of reinforced concrete. Since the beginning of the stress in the hardened cement, due to chemical reactions, special cement standard cement volume expansion, making steel by tensile stress, on the contrary, reinforced by the concrete compressive stress, such pre-stress can increase the carrying capacity of reinforced concrete structures and crack performance. Since the stress of cement special cement, mortar or concrete requires its expansion and deformation since stabilized stress value greater than 2 MPa (1 MPa generally less expansive cement). Since the stress of cement can be divided according to the mineral composition of different silicate cement self-stress, since stress aluminate cement and sulfur aluminate cement since stress. Such cement impermeability good, suitable for the production of various diameters, since stress withstand various hydraulic and pneumatic tubes, such as city water pipes, gas pipes and other oil and gas pipelines. Expansive cement in the hardening process, the cement hydration mineral hydrates generated during crystallization will have a great expansion energy, people use this principle successfully developed a silent broken agent, has been used in concrete structures and rock removal mining, cutting and crushing, etc., with good results. Witton Cement Group Co., Ltd. Share: special cement free white cement: white Portland cement is the most important varieties of white cement, iron and other non-ferrous metal oxides is low content of limestone, clay, silica as the main raw materials, high temperature calcination, quenched into cement clinker, adding an appropriate amount of gypsum (also adding a small amount of white limestone instead of part of clinker), grinding in a mill fitted with stone (or wear-resistant metal) liner and grinding media A fine made of Portland cement. During the manufacturing process, in order to avoid contamination of Shanxi special dedicated colored cement, they use natural gas or heavy oil as fuel during calcination. Can also be used to generate a reduction EAF slag, gypsum and white granulated slag, the preparation of non-white cement clinker. White color with white cement degrees, four grades of special cement plant, measured by white meter. White Portland cement and physical properties similar to ordinary portland cement, mainly for building decoration materials, can also be used sculpture technology products. Yuncheng special cement special cement plant _ _ Witton cement provided by Witton Cement Group Co., Ltd. Witton Cement Group Co., Ltd. (www.sxwdgs.com/) strong, credible, Shanxi Yuncheng cement and related products industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Witton cement into the brilliant and you work for a better future!