The purpose of the small grinding test is: to use the material (the material being used or the material to be used) to initially select the variety and dosing of the grinding aid; to use the material to initially verify the adaptability of the grinding aid (mineral composition, ease of grinding) to reduce the blindness of the large grinding test; to use the standard material (self-matching) to verify the stability of the grinding aid in use.

Water reducing agent is an admixture that can reduce the amount of mixing water and increase the strength of concrete under the condition of unchanged concrete compatibility and cement dosage; or save cement dosage under the condition of unchanged compatibility and strength. Compared with ordinary water reducing agent, water reduction and enhancement are stronger.

Water reducing agent (also known as superplasticizer, superfluidizer, high performance AE water reducing agent) is a key material for the preparation of modern concrete and is an indispensable component. The excellence achieved in the field of modern concrete comes mainly from the technological developments in the field of water reducing agents. The role of water reducing agents is to reduce the amount of mixing water while maintaining the same concrete slump, so that the water-cement ratio is at a minimum or to be able to significantly improve the fluidity of concrete or fresh mortar to maximize fluidity while maintaining the same amount of mixing water.

With the development of the construction industry, commercial concrete as a building material is also bound to experience product updates to meet the current technical requirements of high strength, high performance, durability and high level pumping. At present, the quality of cement, sand, stone and fly ash as raw materials for commercial concrete has not changed after years of use, but the water reducing agent has undergone many product changes, so the best way to improve the quality of concrete products is to use a better water reducing agent, and as the third generation of high-performance water reducing agent, polycarboxylic acid water reducing agent has naturally become the first choice of commercial concrete mixing plants. As the third generation of high performance water reducing agent, polycarboxylic acid water reducing agent has become the first choice of commercial concrete mixing plant.