Phosphoaluminate early strength cement clinker being high in content of calcium aluminoferrite

Abstract

A phosphoaluminate early strength cement clinker being high in content of calcium aluminoferrite includes, by mass, 1-10% of SiO2, 10-50% of Al2O3, 9-15% of Fe2O3, 35-55% of CaO, 10-30% of P2O5 and the balanced being impurities, wherein the raw materials are mixed and are calcined at 1500-1800 DEG C to sinter the phosphoaluminate early strength cement clinker being high in the content of calcium aluminoferrite. The cement clinker is low in sintering temperature and cost and is better in mechanical performance and anti-erosion performance.

Description

technical field

[0001] The invention belongs to the technical field of cement materials, in particular to an aluminophosphate early-strength cement clinker with high content of calcium aluminate iron. Background technique

[0002] Aluminophosphate cement has excellent mechanical properties such as rapid hardening, early strength, and high strength. The cement paste has excellent durability, such as: excellent frost resistance, carbonation resistance, chemical corrosion resistance, impermeability and steel corrosion resistance, etc. This cement has a wide range of uses and market prospects in emergency repair projects, marine engineering, etc., and can replace and improve existing cementitious materials in some aspects. However, due to the high cost of raw materials, the cost of this cement is greatly high. Compared with ordinary Portland cement, the popularization and application of this cement is limited. Contents of the invention

[0003] The invention further reduces...