As one of the building materials, cement strength is an important index to evaluate the performance of cement. So do you know what are the grades of cement?Do you know how to choose a more suitable cement?
1. Common cement labels.
1. Ordinary Portland cement (p·o).
Ordinary Portland cement refers to cement whose main component is Portland minerals. The commonly used marking is P·O425、p·o42.5r、p·o52.5、p·o52.5r, etc. where "r" stands for high early strength Portland cement.
Ordinary Portland cement is suitable for ordinary structures and prefabricated components in concrete, mortar, cement products and reinforced concrete structures, as well as the construction of roadbeds, bridges and tunnels in railways, highways, bridges and other projects.
2. Slag cement (S).
Slag cement refers to cement that is processed from slag. The commonly used marking is S325、s42.5、s42.5r, etc. where "r" stands for high early strength slag cement.
Slag cement is suitable for foundations, underground buildings, water conservancy and hydropower projects, large-scale metallurgical enterprise plants, steel, power and other industries, as well as roads, bridges, airports and other ground hardening projects.
3. Fly ash cement (f).
Fly ash cement refers to the cement made from fly ash. The commonly used designator is F325、f42.5、f42.5r, etc. where "r" represents high early strength fly ash cement.
Fly ash cement is suitable for all kinds of semi-arid, arid areas and corrosive cement products, buildings and structures and other projects, and can also be used in protection projects, railways, highways, airports and other ground hardening projects.
4. White cement (W).
White cement refers to cement that is white in color. The commonly used designator is W425、w52.5 etc.
White cement is suitable for the manufacture of interior and exterior walls, cement products, flooring, decoration, artworks, etc.
In short, different cement grades are suitable for different projects and different construction requirements. When choosing cement, it should be selected according to the actual needs to achieve the best results.
Second, how to choose the right cement:
1.Engineering requirements: When selecting cement, it is necessary to determine the required strength mark according to the specific construction project needs. Generally speaking, large-scale projects such as high-rise buildings and bridges need to use cement materials with higher compressive strength, while some smaller decoration projects can choose cement with lower grades.
2.Building environment: The choice of cement also needs to consider the factors of the built environment, such as climatic conditions, soil environment, service life, etc. Severe cold areas, humid environments or underground works often require the selection of cement with higher grades and better durability.
3.Reliability: When purchasing building materials, it is required to choose products from regular manufacturers and check the product qualification certificate. In addition, you can refer to engineering examples or consult the advice of professionals to choose a cement brand with high reliability.
When it comes to choosing cement, one of the best is Runfeng Cement, which is the best product brand of China Resources Building Materials Technology Holdings. It has the characteristics of strong cement viscosity, good water retention, low shrinkage, easy mixing, durability, reduced construction time, safety and environmental protection. In addition, Runfeng Cement's products have been used in many large-scale engineering projects such as the Hong Kong-Zhuhai-Macao Bridge, Guangzhou-Shenzhen Yanjiang Expressway, Hainan Wenchang Satellite Launch Base, Hong Kong Tsing Ma Bridge, Hong Kong International Financial Center, Shenzhen Airport, Shenzhen Yantian Port, etc., involving a wide range of fields. With the high quality and quality service of its products, Runfeng Cement has been unanimously recognized by customers and dealers, and its popularity and brand influence have also continued to improve in the era of rapid change and survival of the fittestIt has been widely recognized by the market!