Preparation method and application method of hydrated calcium silicate seed crystal

Abstract

The invention relates to a preparation method and application method of a hydrated calcium silicate seed crystal. The materials for preparing the hydrated calcium silicate seed crystal comprise a calcium material, a silicon material, deionized water, a dispersant, anhydrous ethanol and sodium hydroxide. The adopted calcium material is calcium oxide, the adopted silicon material is one of sodium silicate and diatomite, and the adopted dispersant is a poly-carboxylic acid high molecular polymer. The controlled factors comprise the ratio of calcium to silicon, the ratio of water to solid, the dosage of the dispersant, the reaction temperature, the reaction pressure and the reaction time. The product prepared by the method provided by the invention is suitable for a construction engineering adopting mixed material cement as a cementitious system, and has an obvious effect of promoting the development of the early strength of a mixed material cement base material, so that the application scope of the mixed material cement is expanded, the dilemma of solid waste emission is relieved, the cement production cost is reduced, the emissions of wastes during cement production are reduced, and the product is beneficial to low-carbonization and greening development of cement, and has good environmental protection benefits and social and economic benefits.

Description

technical field

[0001] The invention belongs to the technical field of building materials, and in particular relates to a method for preparing calcium silicate hydrate seed crystals and a method for using the same. Background technique

[0002] Concrete is the most important building material in the world today, and cement is one of the main components of concrete. At present, my country's cement consumption accounts for about 60% of the world's total, and a large amount of waste will be discharged in the process of firing cement, which undoubtedly poses a huge challenge to my country's environmental protection work. Based on the strategy of sustainable development, from the perspectives of energy conservation, resource consumption, reduction of industrial waste discharge and protection of the natural environment, it is required that the development, production and construction of concrete and its raw materials not only meet the basic construction needs, but also not endang...

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