Gelatinization material gypsum-cement and producing method thereof

Abstract

The invention relates to a gypsum-cement binding material and a production method thereof. The material contains gypsum binding material, active admixture, alkaline excitant, oagulation accelerator, lime, water-reducing agent, early-strength agent and gypsum hemihydrate. The weight proportions of the components are as follows: 40%-80% of gypsum binding material, 10%-45% of active admixture, 4%-15% of alkaline excitant, 0-6% of coagulation accelerator, 0-1% of early-strength agent, 0-1% of water-reducing agent, 0-5% of lime and 0-10% of gypsum hemihydrate. The production method comprises the following steps: weighing raw materials at the given ratio, mixing all raw materials, and packaging. The inventive gypsum-cement material has high strength, good water resistance and good volume stability; and can be used as masonry cement, cement mortar, gypsum plaster, jointing gypsum and heat-insulating mortar.

Description

technical field [0001] The invention relates to a high-strength water-resistant gelling material, in particular to a gypsum-cement used as masonry cement, cement mortar, plastering gypsum, jointing gypsum, and thermal insulation mortar. Background technique [0002] Traditional building gypsum has the characteristics of fast setting and hardening, no shrinkage, light weight, heat preservation, and energy saving. It has been widely used as interior decoration materials. However, due to its low strength and poor water resistance (low softening coefficient) its scope of application. Anhydrous gypsum is also known as anhydrous gypsum. There are two types: natural and artificial. The latter is anhydrite formed by calcining dihydrate gypsum at 360-1000°C, and gypsum calcined at 360-500°C. The slow-dissolving anhydrite is called anhydrite II-S, the anhydrite produced at 500-700°C is called anhydrite II-U, and the anhydrite produced at 700-1000°C is called anhydrite II-E, which is ...

AI Technical Summary

Problems solved by technology

With the implementation of environmental protection policies and the implementation of my country's coal-fired power plant flue gas desulfurization plan, more than 20 million tons of desulfurization gypsum will be added every year after 2010; 1 million tons of fluorogypsum will be produced every year, and there will be a large amount of lemon gypsum and boron gypsum , titanium gypsum, etc., these industrial by-products gypsum (also known as chemical gypsum, of which phosphogypsum, desulfurization gypsum, lemon gypsum, boron gypsum, titanium gypsum and salt gypsum belong to dihydrate gypsum, and fluorine gypsum is anhydrous gypsum) are currently only a small amount Used as cement additives, most of them are piled up, which not only takes up a lot of land, but also pollutes the environment and groundwater resources