Post Date:2,Sep,2025

Common types of admixtures and their role in ready-mixed concrete:

Concrete admixtures are an important component for improving the performance of concrete, and various types of admixtures have different roles in ready-mixed concrete. The most common types of admixtures are water reducers, accelerators, antifreeze agents and preservatives. As a key component in concrete, water reducers can significantly reduce the amount of water used in concrete and improve the workability and strength of concrete. The use of water reducers can make concrete easier to construct, better fluidity, and promote better dispersion of cement particles, thereby improving the early strength and anti-permeability of concrete.

Accelerators can promote rapid hardening of concrete and shorten the initial setting time, which is suitable for low temperature environments or situations where rapid construction is required. The extension of plastic time has a significant effect on improving the workability of concrete.

Antifros have the function of protecting concrete under low temperature conditions, which can enable concrete to be constructed normally under low temperature environments, and prevent concrete from solidifying too slowly due to low temperature, which affects the development of strength.

Preservatives are used to resist corrosion in various environments and improve the durability of concrete.

These common concrete admixtures have their own characteristics and uses. Correct selection and use can significantly improve the performance of ready-mixed concrete and improve the efficiency and quality of the entire project. Understanding the performance and application of various admixtures will help engineering decision makers to select admixtures more scientifically and reasonably and optimize the engineering application of

ready-mixed concrete.

Comparative analysis of different admixtures in ready-mixed concrete:

Water reducer is a commonly used ready-mixed concrete admixture. Its main function is to reduce the water consumption of concrete without changing the separation and uniformity of concrete, thereby improving the workability and strength of concrete.The reduction in the amount of water used in ready-mixed concrete has a significant impact on quality. The primary impact is the improvement of the strength of concrete. This is because the amount of water required for cement hydration reaction is reduced, so that more water can be used to generate hydration products, thereby increasing the bonding between solid phase particles and improving strength. The use of water reducer can improve the durability of concrete. The products formed by cement hydration in concrete can fill pores, reduce porosity, and reduce pore connectivity, thereby improving the durability indicators of concrete such as impermeability and frost resistance.