What are mineral admixtures? What are the uses of mineral admixtures?

Mineral admixtures refer to inorganic mineral fines added during the preparation of concrete that can improve the performance of fresh and hardened concrete. Usually, the amount of mineral admixtures is greater than 5% of the cement dosage, and the fineness is the same as or finer than that of cement.
Mineral admixtures include not only common granulated blast furnace slag, but also fly ash, silica fume, limestone powder, steel slag powder, phosphorus slag powder, zeolite powder, and composite mineral admixtures. Its functions include:
1. Improving the mechanical properties of hardened concrete
Concrete mixed with mineral admixtures has a dense structure and excellent interfacial bonding performance, exhibiting good physical and mechanical properties. On the premise of improving the performance of concrete, mineral admixtures can replace cement by 30% -50% in equal amounts to prepare concrete, greatly reducing the amount of cement used.
2. Improving the workability of mixed concrete
Mineral admixtures are made by the ultra-fine grinding process. In freshly mixed cement slurry, they can increase the fluidity of the cement slurry and effectively control the slump loss of concrete. The specific surface area of mineral admixtures is 350-1500m3/kg. Due to the adsorption of water by large specific surface area particles, it plays a role in water retention, weakens water permeability, and significantly improves adhesion.
3. Improving the durability of concrete
Due to the fact that concrete mixed with mineral admixtures can form a relatively dense structure and significantly improve the water permeability of fresh concrete, avoiding the formation of connected pores, the impermeability of concrete can be improved. Similarly, due to the dense structure of cement stone and the difficulty of carbon oxide invading the interior of concrete, mineral admixture concrete also has good carbonization resistance.
The LM series slag vertical mill of Liming Heavy Industry is a mainstream equipment for preparing mineral admixtures. The company can provide you with a complete set of mineral powder grinding equipment, as well as EPC general contracting services for the entire project. From early project design and equipment supply to later project construction, installation and debugging, personnel training, etc., there are also full process tracking services to ensure the rapid and smooth production of the project. Welcome to consult!