Quick-setting early strength inorganic polymer mortar and production method thereof

Abstract

The invention discloses a quick-setting early strength inorganic polymer mortar and a production method thereof, and relates to the technical field of building material application. The quick-setting early strength inorganic polymer mortar comprises, by mass, 20-50 parts of slag powder, 35-60 parts of quartz sands, 0-10 parts of silica fume, 2-10 parts of an alkali exciting agent, 0.1-0.3 parts of a superplasticizer, 14-15 parts of tap water, 0-5 parts of sulfoaluminate cement, 0-10 parts of gypsum powder, 0-2 parts of EVA, and 0-0.5 parts of polymer fibers. The production method comprises the following steps: proportioning above raw materials, stirring the raw materials, carrying out heating stirring, and cooling the raw materials to obtain the mortar with the advantages of good workability, high early strength, high impermeability, good flexibility, high durability, high bonding strength and good corrosion resistance. The mortar is a beneficial supplement to present gelling material systems, and is produced from high-aluminum slag, fly ash, silica fume, gypsum and other solid wastes. The quick-setting early strength inorganic polymer mortar has the advantages of no high temperature calcining in the production process, suitableness for being used in the fields of engineering with special requirements, and good development prospect.

Description

technical field [0001] The invention belongs to the technical field of application of building materials, and in particular relates to a fast-setting early-strength inorganic polymer mortar and a preparation method thereof. Background technique [0002] Inorganic gelling materials synthesized by using blast furnace slag powder, fly ash or calcined clay as basic materials through the action of alkali activators are called alkali-activated gelling materials, also known as inorganic polymer gelling materials. The synthesis of inorganic polymer materials mainly includes the processes of dissolution, hydrolysis, polycondensation and solidification, that is, solid raw materials are dissolved under alkaline conditions to release silicon, aluminum and other ions, in which silicon and aluminum ions form specific silicon, aluminum and other ions through hydrolysis. aluminum hydroxide ions. These ionic groups condense with each other to form larger ionic groups, which gradually form a...

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Problems solved by technology

[0004] Patent document CN1699252A discloses an alkali-activated carbonate / slag composite cementitious material and its preparation method. The composite material has little environmental pollution and is environmentally friendly, but the initial and final setting times are long; patent document CN104496333 A discloses a A fly ash-based polymer concrete material and a preparation method thereof, the material has high early strength, but the amount of cement is large; patent document CN103351105A discloses an alkali-activated cementitious material and a preparation method thereof, and the obtained alkali-activated cementitious material has a later strength High, but insufficient early strength; patent document CN102910882 A discloses a fiber-reinforced alkali-activated gelling material and its preparation method, the material has high later strength, but low early strength, and the maintenance process is complicated

The above research shows that due to the difficult preparation method and construction process, high cost, low early strength, poor stability, etc., it has not been widely used in engineering applications.

Looking at domestic research, it is still mainly based on formula exploration, performance testing and qualitative result interpretation, which has a large gap with the international advanced level

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