CN101619604B

CN101619604B - Self heat-insulating external wall block

Info

Publication number: CN101619604B
Application number: CN2009100655483A
Authority: CN
Inventors: 刘政辰
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-07-28
Filing date: 2009-07-28
Publication date: 2011-12-21
Anticipated expiration: 2029-07-28
Also published as: CN101619604A

Abstract

The invention relates to a self heat-insulating external wall block which comprises a block framework and an ultralight foamed concrete insulating layer, wherein the block framework is made from cement, fly ash, gypsum, perlite and sawdust, and the ultralight foamed concrete is made from cement, fly ash, gypsum and chemical foaming agents. The compressive strength of the block framework can reach more than 5Mpa, the density of the ultralight foamed concrete is controlled below 230kg/m<3>, and the ultralight foamed concrete has good insulating property. The apparent density of the self-insulating external wall block formed by the structures is only 480kg/m<3>, and the heat conductivity coefficient of the self-insulating external wall block is only 0.058W/(m*K). The self heat-insulating external wall block can lower the building load by more than 30%, can greatly save the consumption of reinforced cement, can reduce the construction cost by more than 20%, can achieve the requirement of building energy conservation by 50% or 65% without implementing internal and external insulating processes for the wall body, and can obtain large social benefit and economic benefit.

Description

Self-heat preservation outer wall building block

Technical field

The invention belongs to constructional materials, relate to the walling unit brick that is used for domestic architecture, particularly a kind of self-heat preservation outer wall building block that is composited by hard building block skeleton and ultralight foamed concrete insulation layer.

Background technology

At present, the country to energy conservation, improve housing conditions and pay much attention to, building energy conservation is a key areas of China's energy conservation.By the National Development and Reform Commission, the Ministry of Science and Technology, Department of Commerce, State Intellectual Property Office, in " the current hi-tech industrialization major fields guide of first developing " of issuing and implementation on January 23rd, 2007, clearly propose " first developing the high-performance exterior wall self-insulation wall material "." People's Republic of China's recycling economy promotion law " clearly proposes " country encourages to utilize nontoxic solid waste to produce constructional materials " from enforcement on January 1 in 2009.

Present walling unit, the building block that all is incubated inside and outside not having in the ceramic tile on the market, private residence body of wall width is built up by two building blocks.Mostly wall thermal insulating is the outer polyphenyl foamed board that pastes, and smears cement layer with fixation with steel wire, does the back tile fixing.This building wall and thermal-insulating method, the engineering time is long, and operation is many, and the wall thermal insulating degree is low, the cost height.

Summary of the invention

The objective of the invention is to improve the heat-insulating property of prior art, provide a kind of lightweight, high-strength, porous, insulation, heat insulation, sound insulation property is superior, service life is long, construction costs is low, can realize suitability for industrialized production, be convenient to a kind of self-heat preservation outer wall building block of large scale application.

Self-heat preservation outer wall building block of the present invention is made up of building block skeleton, ultralight foamed concrete insulation layer, and wherein the building block skeleton is to be made by cement, flyash, gypsum, perlite, sawdust; The ultralight foamed concrete is to be made by cement, flyash, gypsum, CBA.

For realizing purpose of the present invention, existing according to following technical scheme.Self-heat preservation outer wall building block is to be made by following raw materials in weight portion:

The building block skeleton be by:

Cement 30%-50% flyash 30%-50% gypsum 10%-50% perlite 5%-10% sawdust 5%-10%

The ultralight foamed concrete be by:

Cement 30%-50% flyash 30%-50% gypsum 10%-30% CBA 3%-5%

Self-heat preservation outer wall building block of the present invention, building block skeleton compressive strength reaches 5Mmp, and ultralight foamed concrete insulation layer density is controlled at 230kg/m ³Apparent density is controlled at 480kg/m ³, coefficient of thermal conductivity is controlled at 0.058W/ (mK); The building block skeleton mixes a certain proportion of perlite, reduces the effect of " hot and cold bridge " to greatest extent, reaches the effect of thermal insulation; The building block both sides are set to dual-cavity, and during the concrete block masonry construction, the groove junction is adopted and mixed the perlitic cement mortar of certain proportion, blocking-up " hot and cold bridge "; Its length * wide * height is respectively 500mm * 240mm * 250mm, and building block skeleton wall thickness is 20mm, and the block insulation layer is the thick 200mm of being of ultralight foamed concrete.

Self-heat preservation outer wall building block of the present invention, can alleviate built-loading more than 30%, a large amount of reinforced concrete consumptions of saving, can reducing the construction costs more than 20%, the self-heat preservation outer wall building block masonry need not to do the inside and outside insulation of body of wall again, can reach the requirement of building energy conservation 50% or 65%, problems such as price height, complex process, the difficulty of construction that has fundamentally solved masonry wall structure secondary heat insulation system is big, the cycle is long, hidden danger of quality is many, insulation layer hollowing, large tracts of land come off, face crack crack can have a tremendous social and economic benefits.Having broken the energy saver mode of the inside and outside insulation of present body of wall, is that collection building enclosure and insulation are the novel wall material of one.Self-heat preservation outer wall building block, superior function with light weight, high-strength, porous, insulation, heat insulation, sound insulation, both worked the effect of going along with sb. to guard him, play insulation effect again, significantly reduce construction costs, durability can satisfy the building requirement of service life, overcome crack that present external wall heat insulation system exists fully, come off, the construction technology complexity, long in time limit, be difficult for various drawbacks such as bonding exterior wall tile, and in insulation layer rapid wear when heat insulation system reduces indoor usable floor area, indoor pipelining within the walls, hinder drawback such as indoor fine fitment.

The specific embodiment:

Take by weighing raw material in following ratio

The building block skeleton be by:

Cement 40% flyash 40% gypsum 10% perlite 5%

Sawdust 5%

The ultralight foamed concrete be by:

Cement 40% flyash 40% gypsum 15% CBA 5%

Preparation method of the present invention is:

Take by weighing each raw material for standby at first, by weight ratio.

Secondly, adopt the special-purpose foaming homogenizer to stir 1～2 minute in cement, flyash, gypsum, add CBA 5% back and stirred 1 minute, pour the dedicated templates foaming into, after three hours foaming is finished, make ultralight foamed concrete insulation layer.

Once more, make heat insulation building block, with cement, flyash, gypsum, perlite, sawdust, adding water stirred 2～3 minutes, carry out then that mortar shop is covered, composite glass fiber cloth, roll-in, guarantee for a person given by a shopkeeper's temperature core body, mortar spread cover, composite glass fiber cloth, roll-forming, maintenance, the demoulding, cutting, stacking, promptly form heat insulation building block, whole process of production adopts the production of mechanization streamline.

The production of self-heat preservation outer wall building block, adopt roller press type compound sandwich heat insulation building block automatic assembly line, this project construction efficient height, low, the constant product quality of cost, product has light weight, sound insulation, insulation, premium properties such as fire-resistant, help building energy conservation, can significantly reduce the wet trade of building, the reduction of erection time, alternative a large amount of solid clay brick is for country saves a large amount of energy and soil.In addition, this production line also consumes a large amount of industrial residues, helps environmental protection, has wide promotion prospect, and it is applied and will produce great economic benefit and social benefit.

Claims

1. self-heat preservation outer wall building block is characterized in that it is made up of building block skeleton, light foaming concrete insulation layer, and wherein the building block skeleton is to make by following raw materials in weight portion:

Cement 30%-50% flyash 30%-50%

Gypsum 10% perlite 5%-10% sawdust 5%-10% light foaming concrete insulation layer is to be made by following raw materials in weight portion:

Cement 30%-50% flyash 30%-50% gypsum 10%-30%

CBA 3%-5%.

2. self-heat preservation outer wall building block according to claim 1 is characterized in that: building block skeleton compressive strength reaches 5Mpa, and light foaming concrete insulation layer density is controlled at 230kg/m ³Apparent density is controlled at 480kg/m ³, coefficient of thermal conductivity is controlled at 0.058W/ (mK); The building block both sides are set to dual-cavity; Its length * wide * height is 500mm * 240mm * 250mm, and building block skeleton wall thickness is 20mm, and the block insulation layer is a light foaming concrete, and thick is 200mm.

3. the preparation method of self-heat preservation outer wall building block according to claim 1 is characterized in that:

(1), takes by weighing each raw material for standby in the prescription ratio;

(2), adopt the special-purpose foaming homogenizer to stir 1～2 minute cement, flyash, gypsum, stirred 1 minute after adding CBA 3%-5%, pour the dedicated templates foaming into, post-foaming was finished in three hours, made the light foaming concrete insulation layer;

(3), with cement, flyash, gypsum, perlite, sawdust, adding water stirred 2～3 minutes, carry out then that mortar shop is covered, composite glass fiber cloth, roll-in, shop light foaming concrete insulation layer, mortar shop cover, composite glass fiber cloth, roll-forming, maintenance, the demoulding, cutting, stacking, promptly form heat insulation building block.