Rapid setting filler for cement concrete

Abstract

The invention relates to a building auxiliary material, in particular to a rapid setting filler for cement concrete. The rapid setting filler comprises the following raw materials: coal cinder, sodium carbonate, calcium chloride, sodium silicate, sodium metaaluminate, ferric chloride, asphalt emulsion, gypsum, a filler and a modifier. The coal cinder is taken as a main material, so that the compression resistance, fracture resistance and frost resistance of the concrete can be improved; in addition, the coal cinder is a sintered pozzolanic material, has hydraulic gelling performance after being ground, and can be matched with cement clinker and cement in the concrete or lime and gypsum for use; polyvinyl chloride can be used for producing lightweight concrete, and the produced lightweight concrete is light in weight, high in heat insulation and sound insulation; anhydrous glycerin is a good cement hydration inhibitor; tetraethoxysilane is hydrolyzed to consume water, and forms a volatile azeotropic hydrate with isopropanol and water, so that volatilization of water in the concrete is accelerated; and the tetraethoxysilane is hydrolyzed to form silicon dioxide, so that the bonding performance of the concrete is improved.

Description

technical field [0001] The invention relates to a building auxiliary material, in particular to a fast-setting filler for cement concrete. Background technique [0002] When cement is mixed with an appropriate amount of water, a plastic paste begins to form, which is machinable. As time goes on, the slurry gradually loses its plasticity and becomes a compact state that cannot flow. After that, the strength of the slurry gradually increases until it finally becomes a stone-like solid with considerable strength. If aggregates such as sand, gravel, etc. were originally mixed, cement will bind them together and become a solid whole, which is what we often call concrete. [0003] In the production process of ready-mixed concrete, the setting time of concrete is a matter of great concern to construction units and concrete production units. Whether it is from the scientific point of view of construction operation or from the point of view of engineering economy, it is of great pr...

AI Technical Summary

Problems solved by technology

[0004] At present, the existing concrete often adds some auxiliary materials to accelerate the solidification before construction, called concrete accelerator, which can make the concrete solidify within a few minutes, but the use of concrete accelerator will affect the later compressive strength