The Development Trend of Concrete Admixtures

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 overcomes the weaknesses of "low strength, self-weight, and high brittleness" existing in the project. ; The use of antifreeze has created winter construction conditions for severely cold areas, ensured the continuity of project construction, and greatly shortened the construction period; with the continuous development of high-efficiency water-reducing agent application technology, fluid concrete technology, and pumping have been promoted The development of new pouring technology; accelerated the development of commercial concrete. The development of commercial concrete has brought great economic benefits and environmental protection benefits to the construction industry in China and has further promoted the development of the construction industry and the improvement of construction technology.

Types of plasticizers in concrete

Concrete admixtures are divided into six categories according to their main functions: 

(1) Admixtures that improve the fluidity of fresh concrete. Mainly include various water-reducing agents, air-entraining agents, grouting agents, pumping agents, etc. 

(2) An admixture that adjusts the setting time and hardening performance of concrete. Mainly include retarder, accelerator, early strength agent, and so on. 

(3) Additives for adjusting the air content of concrete. Mainly include air-entraining agent, air-entraining agent, foaming agent, etc. 

(4) Additives to enhance the physical and mechanical properties of concrete. Mainly include air-entraining agent, waterproofing agent, antifreeze, grouting agent, expansion agent, etc. 

(5) Additives to improve the anti-erosion effect of concrete. Mainly include air-entraining agents, waterproofing agents, rust inhibitors, impermeable agents, and so on. 

(6) Additives that provide special properties for concrete. Mainly include foaming agents, coloring agents, bactericides, alkali-aggregate reaction inhibitors, etc.

With the increasing variety of concrete products and the complexity and large-scale building structure, the demand for admixtures is increasing and the requirements are getting higher and higher. SNF powder has been widely used in concrete. Therefore, the future concrete admixtures will develop in the following aspects.

(1)Compound multifunctional type. The compound multifunctional admixture can learn from each other's strengths in terms of performance, and tends to be perfect. Besides, it needs to be cheap, widely used and has good performance.

(2)Varieties are serialized and diversified. Continuously research and develop new varieties, serialize and diversify varieties to meet the needs of various special projects, and facilitate project use and quality control.

(3)The admixture needed for the development of high strengthening and anti-aging. In recent years, the average strength and maximum strength of concrete used in various countries have been continuously improved. The development of high-strength, anti-aging high-efficiency admixtures provides conditions for the preparation of high-strength and super-high-strength concrete. The effect of water is to prepare high-fluidity concrete, which saves labor, reduces cost, and improves work efficiency.

(4)Reduce the production cost of admixtures. Make full use of various industrial waste materials to produce admixtures, and reform the formulation and production process of admixtures. To produce high-quality, low-cost, and high-efficiency admixture products to improve the competitiveness of the widespread application of concrete admixtures.

(5)Strengthen the in-depth study of the mechanism of cement admixtures. With the development of science and technology, advanced testing methods should be used to develop the action mechanism of admixtures, so as to lay the foundation for further exerting the effects of admixtures, achieving better economic benefits, and effectively guiding the production.

In summary, vigorously developing and promoting the application of concrete admixtures is an important way to promote the scientific progress of the construction industry. With the continuous development and increase of the varieties of concrete admixtures, the quality is gradually improved, the application will be more and more extensive, the research will be more in-depth, and it will definitely play a huge role and good benefits in the construction industry.