Promote the economic benefits of concrete admixtures

Promoting the application of concrete admixtures can not only improve the physical and mechanical properties of concrete, improve project quality, save cement, save energy, shorten the construction period, improve construction conditions, and meet the technical needs of special concrete . At the same time, it also has the characteristics of low investment, quick results, obvious technical and economic benefits, and outstanding social benefits. According to different technical requirements, different economic benefits can be achieved by using different types of admixtures. Adding air-entraining water-reducing agent to concrete can, firstly, evenly distribute the fine bubbles in the concrete to improve the ability to resist freezing and impermeability; secondly, it can bring enhanced water-reducing effects due to its dispersion effect. Therefore, it can not only improve the workability of fresh concrete, but also improve the durability of concrete.

Adding high-efficiency water-reducing admixtures and early-strength water-reducing admixtures to concrete can more than double the one-day strength of concrete, making it possible to prepare high-strength or ultra-high-strength concrete. High-strength concrete is easy to achieve. The improvement of concrete strength not only expands the scope of use of concrete, but also changes the current situation of "fat beams, fat columns, and deep foundations" in structural design to a certain extent. In this way, the weight of the house is reduced and building materials are saved. Add retarding water-reducing admixture to concrete. It can extend the time required for concrete to change from a plastic state to a solid state and slow down the heat release rate of cement hydration. It can meet the construction and quality requirements of different projects, especially large-volume concrete projects.

Concrete is mixed with accelerator. It can meet the construction requirements in concrete projects such as shotcrete in tunnels and national defense emergency repairs. Add expansion and grouting agents to concrete. It can improve the density of concrete, thereby increasing the "stability, impermeability, and frost resistance of concrete" and other properties. Adding air-entraining agents or air-entraining agents to concrete can adjust the internal air content of concrete. Fine bubbles can improve the frost resistance and anti-permeability of concrete, while large bubbles can reduce the weight of concrete, which is very beneficial to the production of light concrete. Add rust inhibitors to concrete. It can improve the resistance to corrosion of steel bars and increase the holding force of concrete on steel bars. Adding water reducing agent to concrete can reduce the amount of cement. To achieve the same concrete grade, it can generally save 15% to 25% of cement. At the same time, it can speed up the turnover of formwork and shorten the construction period. Spray curing agent on concrete surface. Form a thin film on the surface of newly poured concrete to prevent water evaporation and achieve thermal insulation and moisturizing effects. Fluidizing agent is added to concrete. It can prepare self-density and large fluidity concrete, and adopts a new pumping solution flow technology, which can greatly improve construction efficiency. Composite admixtures are added to concrete. It can also reduce energy consumption during concrete mixing and molding processes, and eliminate deafening noise hazards. Colorants are added to concrete. Can be made into various decorative concrete.

With the development and application of concrete admixtures, concrete technology has been vigorously developed in the following aspects: the application of early-strength and high-strength concrete technology, overcoming The weaknesses of "low strength, heavy weight, and high brittleness" existing in the project are eliminated; the use of antifreeze creates winter construction conditions for severely cold areas, ensures the continuity of project construction, and greatly shortens the construction period; with the efficient reduction of The continuous development of aqueous agent application technology has promoted the development of fluid concrete technology and new pumping and pouring processes; it has accelerated the development of commercial concrete. The development of commercial concrete has brought good economic benefits and environmental protection benefits to my country's construction industry, further promoting the development of the construction industry and the improvement of construction technology. </p