CN103224353A - Light-weight composite concrete - Google Patents
Light-weight composite concrete Download PDFInfo
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- CN103224353A CN103224353A CN 201310184154 CN201310184154A CN103224353A CN 103224353 A CN103224353 A CN 103224353A CN 201310184154 CN201310184154 CN 201310184154 CN 201310184154 A CN201310184154 A CN 201310184154A CN 103224353 A CN103224353 A CN 103224353A
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Abstract
The invention relates to field construction materials, particularly a light-weight composite concrete which is characterized by comprising 250-350 parts of cement, 120-200 parts of reinforcing material, 0.5-2.0 parts of chopped fiber, 0.5-2.0 parts of thickening agent, 5-10 parts of redispersible powder, 150-300 parts of hearth residue and 100-200 parts of haydite. Compared with the prior art, a heat insulating material and a buffering transition material with the base layer wall are added; and thus, the heat conductivity coefficient, heat transfer rate and deformation rate are changed, thereby lowering and relieving the stress generation and adverse effect between the two materials, preventing bubbling and cracking, and greatly enhancing the fire resistance of the heat insulating material.
Description
Technical field
The present invention relates to building material field, the lightweight composite concrete that specifically a kind of thermal conductivity is low, fire resistance is good.
Background technology
At present, in the heat insulation integrated system of building structure, the general polystyrol plastic foam plate cast-in-place concrete exterior wall that adopts is incubated outward, steel wire net rack polystyrol plastic foam plate cast-in-place concrete exterior wall such as is incubated outward at heat-insulation system, because of its body of wall and insulation are built together, moulding simultaneously, its speed of application is fast, safety firmly becomes biggest advantage, but because of its plate face not or scribble very thin interfacial agents, and exist the defective of fire resistance difference, in addition, thus put the application that finish coat problems of crack that conventional cement mortar produces has influenced this system owing to smearing in the polystyrol plastic foam plate outside.
As everyone knows, differing materials has different thermal conductivitys, different heat transfer rate and Deformation velocity.The thermal conductivity of polystyrene foamed plastics is 0.030-0.042W/MK, the thermal conductivity of common plastering mortar is about 1.10W/MK, when variation of ambient temperature is big, their Deformation velocity has very big difference, the mortar temperature pace of change than polystyrene foamed plastics will about soon 8-10 doubly about, polystyrol plastic foam plate and plastering mortar as insulating layer of external wall can produce different volume changes when envrionment temperature changes.
The stress that produces when the junction of two kinds of materials is in the intensification heat expansion is referred to as tensile stress, and the stress that produces when cooling is referred to as squeeze.Be subjected to the tensile stress and the squeeze of the unlike material junction generation of influence of temperature change, the crack that will inevitably cause combining site.Therefore along with the continuous variation of envrionment temperature,, cause hollowing, leakage problems as the crack being produced gradually between the polystyrol plastic foam plate of insulating layer of external wall and the plastering mortar.
Summary of the invention
The objective of the invention is in order to overcome the deficiency in the above-mentioned technology, a kind of good water conservation that has is proposed, anticracking, waterproof, functions such as fire prevention, make lightweight composite concrete abundant aquation of gelling material in solidification process, guarantee the lightweight composite concrete have enough intensity and good cohesive force and sag resistance between organic insulation material with outside buffering between the architectural surface be connected material lightweight composite concrete, its thermal conductivity, heat transfer rate and Deformation velocity have had very big change, reduce and alleviated stress and produce and undesirable action, prevent hollowing, the generation of cracking problem.
The technical measures that the present invention adopts are:
A kind of lightweight composite concrete, it is characterized in that forming by cement, furnace bottom slag, light skeletal and rubber powder, the weight part of each composition is cement 250-350 part, supporting material 120-200 part, staple fibre 0.5-2.0 part, thickening material 0.5-2.0 part, redispersible powder 5-10 part, furnace bottom slag 150-300 part, haydite 100-200, the thickness of the concrete layer that described lightweight composite concrete forms is not less than 20mm, and density is smaller or equal to 1500kg/m
3, ultimate compression strength is more than or equal to C20, frost resistance 35 times, mass loss≤5 ﹪, loss of strength≤20 ﹪, drying shrinkage value≤1.1mm/m, thermal conductivity≤0.25 W/(m.k).
Staple fibre among the present invention can adopt one or more the mixture in poly-third fiber, mineral fibre, the alkali resistant glass fibre, is used for improving effectively the cracking resistance of lightweight composite concrete, impervious, anti-impact mill and freeze proof ability.
Thickening material can adopt cellulose ethers organic thickening agent or propylene class organic thickening agent among the present invention, is used for carrying out water-keeping thickening in the lightweight composite concrete, improves application property and the wet viscosity of lightweight composite concrete etc.
Redispersible powder among the present invention is a high molecular polymer, can increase the water-retentivity of lightweight composite concrete effectively, improves force of cohesion.Simultaneously can make the lightweight composite concrete have functions such as good anticracking, waterproof, make lightweight composite concrete abundant aquation of gelling material in solidification process, assurance lightweight composite concrete has enough intensity and good cohesive force and sag resistance.In addition, the adding of furnace bottom slag and haydite makes thermal conductivity, heat transfer rate and the Deformation velocity of lightweight composite concrete that very big change arranged, and produces and undesirable action thereby reduce and alleviated stress, prevents the generation of hollowing, cracking problem.
Embodiment
The invention will be further described below in conjunction with example.
Example 1: a kind of lightweight composite concrete, it is characterized in that forming by cement, furnace bottom slag, light skeletal and rubber powder, the weight part of each composition is 250 parts of cement, 120 parts of supporting materials, 0.5 part on staple fibre, 0.5 part of thickening material, 5 parts in redispersible powder, 150 parts of furnace bottom slags, haydite 100, wherein cement adopts aluminosulfate cement Po42.5; Supporting material is made up of calcium sulfate, and its proportioning weight part is: 120 parts in calcium sulfate; Staple fibre can adopt one or more the mixture in poly-third fiber, mineral fibre, the alkali resistant glass fibre, is used for improving effectively the cracking resistance of lightweight composite concrete, impervious, anti-impact mill and freeze proof ability; Thickening material can adopt cellulose ethers organic thickening agent or propylene class organic thickening agent, is used for carrying out water-keeping thickening in the lightweight composite concrete, improves application property and the wet viscosity of lightweight composite concrete etc.; Redispersible powder is a high molecular polymer, can increase the water-retentivity of lightweight composite concrete effectively, improve force of cohesion, simultaneously can make the lightweight composite concrete have functions such as good anticracking, waterproof, make and lightweight composite concrete abundant aquation of gelling material in solidification process guarantee that the lightweight composite concrete has enough intensity and good cohesive force and sag resistance.In addition, the adding of furnace bottom slag and haydite, make the thermal conductivity heat transfer rate and the Deformation velocity of lightweight composite concrete that very big change arranged, thereby reducing and alleviated stress produces and undesirable action, prevent the generation of hollowing, cracking problem, the thickness of the concrete layer that described lightweight composite concrete forms is not less than 20mm, and density is smaller or equal to 1500kg/m
3, ultimate compression strength is more than or equal to C20, frost resistance 35 times, mass loss≤5 ﹪, loss of strength≤20 ﹪, drying shrinkage value≤1.1mm/m, thermal conductivity≤0.25 W/(m.k).
The every performance index of lightweight composite concrete of the present invention are as follows:
Table 1 lightweight composite concrete
Example 2: a kind of lightweight composite concrete is characterized in that institute comprises each material and contains weight part and is: 350 parts of cement, 200 parts of supporting materials, 2.0 parts on staple fibre, 2.0 parts of thickening materials, 10 parts in redispersible powder, 300 parts of furnace bottom slags, haydite 200, wherein cement adopts aluminosulfate cement Po42.5; Supporting material calcium sulfate, its proportioning weight part is: 200 parts in calcium sulfate; Staple fibre can adopt the mixture of poly-third fiber, mineral fibre, alkali resistant glass fibre, is used for improving effectively the cracking resistance of lightweight composite concrete, impervious, anti-impact mill and freeze proof ability; Thickening material can adopt cellulose ethers organic thickening agent or propylene class organic thickening agent, is used for carrying out water-keeping thickening in the lightweight composite concrete, improves application property and the wet viscosity of lightweight composite concrete etc.; Redispersible powder is a high molecular polymer, can increase the water-retentivity of lightweight composite concrete effectively, improve force of cohesion, simultaneously can make the lightweight composite concrete have functions such as good anticracking, waterproof, make and lightweight composite concrete abundant aquation of gelling material in solidification process guarantee that the lightweight composite concrete has enough intensity and good cohesive force and sag resistance.In addition, the adding of furnace bottom slag and haydite, make the thermal conductivity heat transfer rate and the Deformation velocity of lightweight composite concrete that very big change arranged, thereby reducing and alleviated stress produces and undesirable action, prevent the generation of hollowing, cracking problem, the thickness of the concrete layer that described lightweight composite concrete forms is not less than 20mm, and density is smaller or equal to 1500kg/m
3, ultimate compression strength is more than or equal to C20, frost resistance 35 times, mass loss≤5 ﹪, loss of strength≤20 ﹪, drying shrinkage value≤1.1mm/m, thermal conductivity≤0.25 W/(m.k).
Embodiment 3: a kind of lightweight composite concrete, it is characterized in that institute comprises each material and contains weight part and is: 300 parts of cement, 160 parts of supporting materials, 1.5 parts on staple fibre, 1.5 parts of thickening materials, 7 parts in redispersible powder, 175 parts of furnace bottom slags, haydite 150, wherein supporting material is a calcium sulfate, its proportioning weight part is: 160 parts in calcium sulfate; Staple fibre wherein can adopt the mixture of poly-third fiber, mineral fibre, is used for improving effectively the cracking resistance of lightweight composite concrete, impervious, anti-impact mill and freeze proof ability; Thickening material can adopt cellulose ethers organic thickening agent or propylene class organic thickening agent, is used for carrying out water-keeping thickening in the lightweight composite concrete, improves application property and the wet viscosity of lightweight composite concrete etc.; Redispersible powder is a high molecular polymer, can increase the water-retentivity of lightweight composite concrete effectively, improve force of cohesion, simultaneously can make the lightweight composite concrete have functions such as good anticracking, waterproof, make and lightweight composite concrete abundant aquation of gelling material in solidification process guarantee that the lightweight composite concrete has enough intensity and good cohesive force and sag resistance.In addition, the adding of furnace bottom slag and haydite, make the thermal conductivity heat transfer rate and the Deformation velocity of lightweight composite concrete that very big change arranged, thereby reducing and alleviated stress produces and undesirable action, prevent the generation of hollowing, cracking problem, the thickness of the concrete layer that described lightweight composite concrete forms is not less than 20mm, and density is smaller or equal to 1500kg/m
3, ultimate compression strength is more than or equal to C20, frost resistance 35 times, mass loss≤5 ﹪, loss of strength≤20 ﹪, drying shrinkage value≤1.1mm/m, thermal conductivity≤0.25 W/(m.k).
Embodiment 4: a kind of lightweight composite concrete, it is characterized in that institute comprises each material and contains weight part and is: 250 parts of cement, 200 parts of supporting materials, 0.5 part on staple fibre, 2.0 parts of thickening materials, 5 parts in redispersible powder, 300 parts of furnace bottom slags, haydite 100, the supporting material in the base are calcium sulfate, its proportioning weight part is: 160 parts in calcium sulfate, staple fibre can adopt alkali resistant glass fibre to be used for improving effectively the cracking resistance of lightweight composite concrete, impervious, anti-impact mill and freeze proof ability; Thickening material can adopt cellulose ethers organic thickening agent or propylene class organic thickening agent, is used for carrying out water-keeping thickening in the lightweight composite concrete, improves application property and the wet viscosity of lightweight composite concrete etc.; Redispersible powder is a high molecular polymer, can increase the water-retentivity of lightweight composite concrete effectively, improve force of cohesion, simultaneously can make the lightweight composite concrete have functions such as good anticracking, waterproof, make and lightweight composite concrete abundant aquation of gelling material in solidification process guarantee that the lightweight composite concrete has enough intensity and good cohesive force and sag resistance.In addition, the adding of furnace bottom slag and haydite, make the thermal conductivity heat transfer rate and the Deformation velocity of lightweight composite concrete that very big change arranged, thereby reducing and alleviated stress produces and undesirable action, prevent the generation of hollowing, cracking problem, the thickness of the concrete layer that described lightweight composite concrete forms is not less than 20mm, and density is smaller or equal to 1500kg/m
3, ultimate compression strength is more than or equal to C20, frost resistance 35 times, mass loss≤5 ﹪, loss of strength≤20 ﹪, drying shrinkage value≤1.1mm/m, thermal conductivity≤0.25 W/(m.k).
Embodiment 5: a kind of lightweight composite concrete is characterized in that institute comprises each material and contains weight part and is: 250 parts of cement, 200 parts of supporting materials, 0.5 part on staple fibre, 2.0 parts of thickening materials, redispersible powder 5 really part, 150 parts of furnace bottom slags, haydite 100; Wherein supporting material is a calcium sulfate, and its proportioning weight part is: 120 parts in calcium sulfate; Staple fibre can adopt mineral fibre, is used for improving effectively the cracking resistance of lightweight composite concrete, impervious, anti-impact mill and freeze proof ability; Thickening material can adopt cellulose ethers organic thickening agent or propylene class organic thickening agent, is used for carrying out water-keeping thickening in the lightweight composite concrete, improves application property and the wet viscosity of lightweight composite concrete etc.; Redispersible powder is a high molecular polymer, can increase the water-retentivity of lightweight composite concrete effectively, improves force of cohesion.Simultaneously can make the lightweight composite concrete have functions such as good anticracking, waterproof, make lightweight composite concrete abundant aquation of gelling material in solidification process, assurance lightweight composite concrete has enough intensity and good cohesive force and sag resistance.In addition, the adding of furnace bottom slag and haydite, make the thermal conductivity heat transfer rate and the Deformation velocity of lightweight composite concrete that very big change arranged, thereby reducing and alleviated stress produces and undesirable action, prevent the generation of hollowing, cracking problem, the thickness of the concrete layer that described lightweight composite concrete forms is not less than 20mm, and density is smaller or equal to 1500kg/m
3, ultimate compression strength is more than or equal to C20, frost resistance 35 times, mass loss≤5 ﹪, loss of strength≤20 ﹪, drying shrinkage value≤1.1mm/m, thermal conductivity≤0.25 W/(m.k).
Claims (6)
1. lightweight composite concrete is characterized in that institute comprises each material and contains weight part and is: cement 250-350 part, supporting material 120-200 part, staple fibre 0.5-2.0 part, thickening material 0.5-2.0 part, redispersible powder 5-10 part, furnace bottom slag 150-300 part, haydite 100-200.
2. a kind of lightweight composite concrete according to claim 1 is characterized in that supporting material is a calcium sulfate, and its proportioning weight part is: calcium sulfate 40-80 part.
3. a kind of lightweight composite concrete according to claim 1 is characterized in that described staple fibre is one or more the mixing in poly-third fiber, mineral fibre, the alkali resistant glass fibre.
4. a kind of lightweight composite concrete according to claim 1 is characterized in that described compound heat-insulation aggregate adopts haydite.
5. a kind of lightweight composite concrete according to claim 1 is characterized in that described thickening material adopts the cellulose ethers organic thickening agent.
6. a kind of lightweight composite concrete according to claim 1 is characterized in that described redispersible powder is a high molecular polymer.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310184154 CN103224353A (en) | 2013-05-19 | 2013-05-19 | Light-weight composite concrete |
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| CN 201310184154 CN103224353A (en) | 2013-05-19 | 2013-05-19 | Light-weight composite concrete |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106517967A (en) * | 2014-08-27 | 2017-03-22 | 胡妍 | Water-retention crack-resistance concrete |
| CN110512793A (en) * | 2019-09-20 | 2019-11-29 | 江苏春迈新型建筑材料科技有限公司 | A kind of energy saving and environment friendly heat preservation light wall board and preparation method thereof |
-
2013
- 2013-05-19 CN CN 201310184154 patent/CN103224353A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106517967A (en) * | 2014-08-27 | 2017-03-22 | 胡妍 | Water-retention crack-resistance concrete |
| CN106517966A (en) * | 2014-08-27 | 2017-03-22 | 胡妍 | Water retaining and crack resistant concrete |
| CN106517965A (en) * | 2014-08-27 | 2017-03-22 | 胡妍 | Water-retaining anti-cracking type concrete |
| CN106517964A (en) * | 2014-08-27 | 2017-03-22 | 胡妍 | Water-retention and anti-crack type concrete |
| CN110512793A (en) * | 2019-09-20 | 2019-11-29 | 江苏春迈新型建筑材料科技有限公司 | A kind of energy saving and environment friendly heat preservation light wall board and preparation method thereof |
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Application publication date: 20130731 |