General purpose Portland cement based ultra-light physical foamed concrete

Abstract

The invention discloses general purpose Portland cement based ultra-light physical foamed concrete which is characterized by being prepared by mixing, forming and maintaining the following components in percentage by weight: 20-70% of general purpose Portland cement, 0-40% of a type A admixture or / and 0-40% of a type B admixture, 0.5-4% of a type C additive, 0.3-2% of a foaming agent, 0-1% of a water reducing agent, 0-4% of fibers and 25-60% of water. The general purpose Portland cement based ultra-light physical foamed concrete disclosed by the invention has the characteristics of ultra-low dry density, low thermal conductivity, relatively high strength, wide raw material source, low cost, simple preparation process, easy maintenance process selection and the like, is suitable to serve as an earthquake-proof and energy-absorbing material, a lightweight cushion course and a catalyst carrier material in a thermal insulation project, a floor heating project and a back filling project, and is particularly suitable for a building exterior wall external thermal insulation system, a roof thermal insulation system, a composite thermal insulation wall body and a buffer energy absorbing system.

Description

technical field [0001] The invention belongs to concrete and relates to a general Portland cement-based ultra-light physical foaming foam concrete. The foam concrete of the present invention, as a light-weight building insulation material, is suitable for thermal insulation projects, floor heating projects, backfill projects, shock-resistant energy-absorbing, lightweight cushions, and catalyst carrier materials, and is especially suitable for building exterior wall insulation systems and roof insulation system, composite thermal insulation wall, buffer energy absorption system. Background technique [0002] With the promulgation and implementation of my country's wall reform and building energy-saving policies, and affected by building fires, modern energy-saving green buildings urgently need non-combustible thermal insulation materials with excellent thermal insulation performance, waste utilization, and light weight. As a new type of building material, foam concrete can m...

AI Technical Summary

Problems solved by technology

Publication No. CN101508593A discloses "ultra-light thermal insulation foam concrete and its application". Although the ultra-light foam concrete is prepared by physical foaming method, it needs to be realized by adding lightweight aggregate or organic binder, which has the disadvantages of lack of resources and high cost. question

Another example is the "low-cost ultra-low density foam concrete" disclosed by the publication number CN102515664A. Although ordinary Portland cement, I or II fly ash, granulated blast furnace slag micropowder and other raw materials are used, the physical method of preparing ultra-light foam concrete It needs to be realized by adding an expansion agent. There are various types of expansion agents on the market, and the quality is uneven, and most of them are fired at high temperature. Not only is the cost high, the price is high, the energy consumption is high, and the quality is still controversial, the practicability poor

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