Compound foaming agent for foam concrete and preparation method thereof

Abstract

The invention belongs to the technical field of building materials, and specifically relates to a compound foaming agent for a foam concrete and the preparation method of the compound foaming agent. The compound foaming agent is composed of a surfactant, a protein foaming agent, a foam stabilizing agent, a coagulation accelerator and a water reducing agent. The compound foaming agent provided by the invention is doped with few protein foaming agent and foam stabilizing agent in a surfactant solution to remarkably improve the foaming capability and the foam stabilizing time of the surfactant solution and create favorable conditions for preparing the foam concrete at a low-density grade (not more than 500 Kg / m<3>). In addition, the coagulation accelerator is doped to accelerate the condensation of cement slurry and effectively prevent collapsing; the water reducing agent is doped to improve the working property of a freshly mixed concrete, and reduce the water dosage and improve the strength of the foam concrete at the same time. The product provided by the invention has various functions, and is not limited to only prepare the foam; at the same time, the product provided by the invention has the actions of accelerating coagulation and reducing water, and the product provided by the invention is suitable for preparing the low-density foam concrete.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a composite foaming agent for foam concrete and a preparation method thereof. Background technique [0002] Since my country began to implement building thermal insulation and energy-saving projects in 2005, thermal insulation materials have developed rapidly. At present, common insulation materials are mainly divided into organic insulation materials, inorganic insulation materials and composite insulation materials. Among them, organic thermal insulation materials include expanded polystyrene, extruded polystyrene, foamed polyurethane and expanded polystyrene particles, etc., and inorganic thermal insulation materials include expanded perlite, closed-cell perlite, expanded vermiculite, hollow vitrified microspheres and Rock wool (asbestos), etc., and composite thermal insulation materials are a type of material that is processed and produced by combining...

AI Technical Summary

Problems solved by technology

These types of thermal insulation materials have their own advantages and disadvantages: 1) Organic thermal insulation materials have the advantages of good thermal insulation performance, strong processability and good compactness, but have disadvantages such as easy deformation, poor durability and easy combustion; 2) Inorganic thermal insulation materials have the advantages of good fire resistance, stable performance and good durability, but there are disadvantages such as slightly higher bulk density and poor thermal insulation effect; 3) Composite thermal insulation materials have good thermal insulation performance, small deformation coefficient, It is an ideal thermal insulation material with a series of advantages such as wide source of raw materials and the ability to absorb waste.

At present, domestic foaming agents generally have less functions and poor stability, so that the strength of the prepared foamed concrete products is poor. Therefore, the research on composite foaming agents is the key to preparing foamed concrete with excellent performance.