CN100406403C - Heat-insulating mortar for external wall of building - Google Patents
Heat-insulating mortar for external wall of building Download PDFInfo
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- CN100406403C CN100406403C CNB2004100181874A CN200410018187A CN100406403C CN 100406403 C CN100406403 C CN 100406403C CN B2004100181874 A CNB2004100181874 A CN B2004100181874A CN 200410018187 A CN200410018187 A CN 200410018187A CN 100406403 C CN100406403 C CN 100406403C
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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Abstract
The present invention relates to heat insulating mortar for the external wall of a building. The present invention has components of hydraulic silicate cement, first grade flyash, a water reducing agent with high efficiency, compound heat isolating aggregate, short fibers, re-dispersible polymer adhesive powder and a strength activator. The present invention is a novel heat insulating dry-mixed mortar for the external wall of the building and is prepared by comprehensively using fiber reinforcement technology, polymer modification technology and flyash total utilization technology. The present invention solves the defects of easy dry shrinkage and crack, easy moisture absorption, low adhesive strength of a wall body, etc. of traditional heat insulating mortar type heat insulating material. An obtained heat insulating system of the external wall of the building has the advantages of no cracking, hydrophobic performance, high adhesive strength with the wall body, superior construction performance, etc. and can meet requirements of heat insulation outside the external wall of the building.
Description
Technical field
The present invention relates to a kind of thermal insulation mortar, especially relate to the novel building exterior-wall heat insulation dry-mixed mortar of a kind of comprehensive employing fiber reinforcement technology, polymer modification technology and the preparation of total utilization of PCA technology.
Background technology
Building energy conservation is long-range strategy policy and the fundamental state policy that China formulates, and is the ultimate aim that china natural resources obtains Sustainable development.The socio-economic development level of nearly 20 years China has obtained raising highly visible, but aspect building energy conservation, compares with Western industrialized economy, and gap still is very large.The energy consumption of China unit's floor area of building is up to 3 times of the close developed country of weather condition, and 95% buildings belongs to the high energy consumption building.The heat transfer coefficient that reduces the architectural exterior-protecting construction body of wall is one of the major measure of building energy conservation and effective means, as patent " flyash thermal insulation; sound insulation; building heat-insulating mortar powder and preparation method thereof ", this patent is with flyash, the silicomanganese ash is a major ingredient, with the pearlstone is aggregate, with lime, cement, gypsum is a gelling material, with the silicon ash, soda ash, alunite is an admixture, make through the stirrer homogenize, this mortar is suitable for plaster a wall in the various building constructions face and thermal insulation of roof, and when being used for external wall, be easy to cracking, the moisture absorptions etc. have certain defective for exterior-wall heat insulation.
Building exterior wall heat preserving is for alleviating indoor thermal load, preventing that peripheral structure be full of cracks and internal condensation from all being favourable; simultaneously can protect agent structure; reduce thermal stresses; avoid the generation of heat (cold) bridge; having tangible technological merit, is the mainstream technology of current domestic and international building enclosure heat insulating.Advantages such as domestic outer wall heat preservation system mainly contains heat preservation plate material and thermal insulation mortar type at present, and thermal conductivity is low though heat preservation plate material has, thermal and insulating performance is good, difficulty of construction is big, technical requirements height, and cost height, intensity is low.Though thermal insulation mortar has easy construction, technical requirements is low, intensity is high, low cost and other advantages, its easy dry shrinkage and cracking, the easy moisture absorption and heat-proof quality are general.So demand requiring to realize a kind of easy construction, the heat preservation mortar for outer wall of buildings that technical requirements is low, intensity is high and cost is low urgently.
Summary of the invention
It is big to the invention solves the existing in prior technology difficulty of construction, and intensity is low, and the technical problem that heat-proof quality is general, cost is high provides a kind of easy construction, intensity height, heat-proof quality is good and cost is low heat preservation mortar for outer wall.
The present invention has also solved the easy dry shrinkage and cracking of existing in prior technology metope, and the technical problem of the easy moisture absorption etc. provides a kind of heat preservation mortar for outer wall that prevents the metope dry shrinkage and cracking and the moisture absorption.
Above-mentioned technical purpose of the present invention solves by the following technical programs: a kind of heat preservation mortar for outer wall of buildings, and each material and the content that are comprised are respectively: 100 parts of suitable positions; 80～160 parts in flyash; 1～2 part of high efficiency water reducing agent; 20～80 parts in compound heat-insulation aggregate; 0.4～1.0 part on staple fibre; 2～10 parts of redispersible polymer rubber powders; 1～2 part of intensity activator.This mortar is the novel building exterior-wall heat insulation dry-mixed mortar that comprehensively adopts fiber reinforcement technology, polymer modification technology and the preparation of total utilization of PCA technology, and this mortar has high doping quantity of fly ash.Have prescription rationally, difficulty of construction is low, characteristics such as good heat-insulation effect.Owing to be from outer survey insulation, this thermal insulation structure layer can satisfy the requirement that watertightness, Wind-Pressure Resistance and bigger humiture change, unlikely generation crack, and can resist effects such as extraneous issuable collision impact, can also and adjacent regions (as door and window, pipeline through walls etc.) between and all obtain suitable joining process at aspects such as edge, facing decorations, solved traditional thermal insulation mortar type lagging material and be easy to dry shrinkage and cracking, the easily moisture absorption and the shortcoming low with the body of wall adhesion strength.
The use of intensity activator has guaranteed that the activity of flyash activates and the formation of thermal insulation mortar early strength and the stable regulation and control of later strength.In addition, this heat preservation mortar for outer wall has good economic performance, has made full use of industrial residue---and flyash, its waste residue utilization rate reach the policy requirements that country encourages to use industrial residue more than 30%.This thermal insulation mortar constructing operation is simple, and technical requirements is not high, and quality control is easily gone, and is convenient to large-scale promotion application, and can guarantees quality product, guarantees that product technology is stable and reliable for performance.
As preferably, each material and content that this mortar comprised are respectively: 100 parts of suitable positions; 110～130 parts in flyash; 0.8～1.2 part of high efficiency water reducing agent; 40～60 parts in compound heat-insulation aggregate; 0.6～0.8 part on staple fibre; 5～8 parts of redispersible polymer rubber powders; 1.3～1.8 parts of intensity activator.This prescription can make mortar obtain better properties.
As preferably, also contain little foam type air entrapment agent of 0.1-0.5 part in the described mortar, 0.1～0.6 part organic thickening agent.The use of short fiber material, polymer modification rubber powder and organic thickening agent makes the building exterior wall heat preserving system that is obtained have and does not ftracture hydrophobic, with body of wall adhesion strength height, workability is superior, and the intensity advantages of higher can satisfy the requirement of the outer insulation of external wall preferably.
As preferably, described compound heat-insulation aggregate for through the synthetic pearlstone of grain composition, surperficial clinkering pearlstone, float one or more the mixture in pearl, light ceramic, the expanded polystyrene particle.
As preferably, described staple fibre is that length is one or more the mixture in the high elastic coefficient surface modification polypropylene monofilament staple fibre, mineral short fibre, alkali-proof glass staple fibre of 4～6mm.
As preferably, described redispersible polymer rubber powder is a kind of in polyethylene kind, polyvinyl chloride, polypropylene-base, polyacrylate(s), polyoxyethylene lauryl vinyl acetate class, polyvinyl acetate (PVA) class, the polystyrene type rubber powder or their mixture and multipolymer.
As preferably, described organic thickening agent is cellulose ethers organic thickening agent or propylene class organic thickening agent, and described intensity activator is calcium formiate class or calcium sulfate class hardening accelerator.
Therefore, characteristics such as the present invention has easy construction, intensity height, heat-proof quality is good and cost is low can effectively prevent the heat preservation mortar for outer wall of buildings of the metope dry shrinkage and cracking and the moisture absorption.
Embodiment
Below by specific embodiment, and in conjunction with the accompanying drawings, technical scheme of the present invention is described in further detail.
Embodiment:
Table 1 heat preservation mortar for outer wall of buildings comprises each amount of substance (by weight)
Embodiment 1: as shown in table 1, the prescription of the heat preservation mortar for outer wall of buildings that adopts is (by weight): 100 parts of 425R normal silicates, 100 parts of first level flour coal ash, 1.2 parts of high efficiency water reducing agents, 0.2 part of little foam type air entrapment agent, 20 parts of pearlstones, 10 parts of surface clinkering pearlstones, float 20 parts on pearl, 0.8 part on alkali-proof glass staple fibre, 8 parts of redispersible polyethylene kind/polyvinyl chlorides/polyacrylic ester terpolymer polymer glue powder, 0.4 part of ether of cellulose thickening material, 1.2 parts of calcium formiate intensity activator, after the machine mixer segmentation mixes, promptly obtain high-performance, low-cost, the fiber-reinforced polymer modification high doping quantity of fly ash heat preservation mortar for outer wall of buildings of environment-friendly type.The physicochemical property detected result of gained mortar is as follows:
The physicochemical property detected result of table 2 gained mortar
| Project | The physicochemical property data |
| Outward appearance | Evenly, there are not caking, no material agglomeration |
| Loose capacity | 440Kg/m 3 |
| The goods dry density | 512Kg/m 3 |
| Water ratio | 3.2％ |
| Thermal conductivity | 0.095W/mK |
| Ultimate compression strength (28D) | 4.73MPa |
| Volumetric shrinkage | 0.87％ |
| The volume rate of moisture absorption | 1.3％ |
Embodiment 2-4 is with embodiment 1.
It is superior that the building exterior wall heat preserving system that adopts this fiber-reinforced polymer modification high doping quantity of fly ash heat preservation mortar for outer wall of buildings to be obtained has workability, summer the water retention property excellence, the early strength height, volumetric shrinkage is low, do not ftracture, the volume rate of moisture absorption is low, with body of wall adhesion strength height, the later strength advantages of higher is well positioned to meet the requirement of building exterior wall heat preserving.
Table 3 heat preservation mortar for outer wall of buildings comprises each amount of substance (by weight)
Embodiment 5: as shown in table 3, the prescription of the heat preservation mortar for outer wall of buildings that adopts is (by weight): 100 parts of 525R normal silicates, 80 parts of first level flour coal ash, 1.0 parts of high efficiency water reducing agents, 0.3 part of little foam type air entrapment agent, 10 parts of pearlstones, 10 parts of light ceramics, 6 parts of expanded polystyrene particles, 0.6 part on high elastic coefficient surface modification polypropylene monofilament staple fibre, 5 parts of redispersible polypropylene/polyoxyethylene lauryl vinyl acetate/polyvinyl acetate (PVA) terpolymer polymer glue powder, 0.3 part of ether of cellulose thickening material, 1.0 parts of sodium sulfate intensity activator, after the machine mixer segmentation mixes, promptly obtain high-performance, low-cost, the fiber-reinforced polymer modification high doping quantity of fly ash heat preservation mortar for outer wall of buildings of environment-friendly type.The physicochemical property detected result of gained mortar is as follows:
The physicochemical property detected result of table 4 gained mortar
| Project | The physicochemical property data |
| Outward appearance | Evenly, there are not caking, no material agglomeration |
| Loose capacity | 267Kg/m 3 |
| The goods dry density | 301Kg/m 3 |
| Water ratio | 2.5％ |
| Thermal conductivity | 0.059W/mK |
| Ultimate compression strength (28D) | 2.36MPa |
| Volumetric shrinkage | 0.98％ |
| The volume rate of moisture absorption | 1.1％ |
Embodiment 6-8 is with embodiment 5.
The building exterior wall heat preserving system that adopts this thermal insulation mortar to obtain has that thermal conductivity is low, and workability is superior, summer the water retention property excellence, the early strength height, volumetric shrinkage is low, does not ftracture, the volume rate of moisture absorption is low, with body of wall adhesion strength height, later strength advantages of higher.
Table 5 heat preservation mortar for outer wall of buildings comprises each amount of substance (by weight)
Embodiment 9: as shown in table 5, the prescription of the heat preservation mortar for outer wall of buildings that adopts is (by weight): 100 parts of 525R normal silicates, 140 parts of first level flour coal ash, 1.6 parts of high efficiency water reducing agents, 0.4 part of little foam type air entrapment agent, 20 parts of pearlstones, 10 parts of surface clinkering pearlstones, 10 parts of light ceramics, 1.0 parts on pure aluminium silicate mineral staple fibre, 4 parts of redispersible polyvinyl acetate polymer rubber powders, 0.2 part of propylene class organic thickening agent, 2.0 parts of calcium formiate intensity activator, after the machine mixer segmentation mixes, promptly obtain high-performance, low-cost, the fiber-reinforced polymer modification high doping quantity of fly ash heat preservation mortar for outer wall of buildings of environment-friendly type.The physicochemical property detected result of gained mortar is as follows:
The physicochemical property detected result of table 6 gained mortar
| Project | The physicochemical property data |
| Outward appearance | Evenly, there are not caking, no material agglomeration |
| Loose capacity | 550Kg/m 3 |
| The goods dry density | 595Kg/m 3 |
| Water ratio | 4.6％ |
| Thermal conductivity | 0.116W/mK |
| Ultimate compression strength (28D) | 6.12MPa |
| Volumetric shrinkage | 0.58％ |
| The volume rate of moisture absorption | 1.77％ |
Embodiment 10-12 is with embodiment 9.
The building exterior wall heat preserving system that adopts this thermal insulation mortar to obtain has the later strength height, workability is superior, summer the water retention property excellence, the early strength height, volumetric shrinkage is low, does not ftracture, and the volume rate of moisture absorption is low, with body of wall adhesion strength advantages of higher, be well positioned to meet the requirement of the outer insulation of external wall.
Claims (11)
1. heat preservation mortar for outer wall of buildings, each material that is comprised and content by weight are respectively: 100 parts of suitable positions; 80～160 parts in flyash; 1～2 part of high efficiency water reducing agent; 20～80 parts in compound heat-insulation aggregate; 0.4～1.0 part on staple fibre; 2～10 parts of redispersible polymer rubber powders; 1～2 part of intensity activator; 0.1～0.5 part of little foam type air entrapment agent; 0.1～0.6 part of organic thickening agent; Wherein said redispersible polymer rubber powder is a kind of in polyethylene kind, polyvinyl chloride, polypropylene-base, polyacrylate(s), polyoxyethylene lauryl vinyl acetate class, polyvinyl acetate (PVA) class, the polystyrene rubber powder or their mixture and multipolymer; Described organic thickening agent is cellulose ethers organic thickening agent or propylene class organic thickening agent.
2. heat preservation mortar for outer wall of buildings according to claim 1 is characterized in that each material that this mortar comprises and content by weight are respectively 100 parts of suitable positions; 110～130 parts in flyash; 1～1.2 part of high efficiency water reducing agent; 40～60 parts in compound heat-insulation aggregate; 0.6～0.8 part on staple fibre; 5～8 parts of redispersible polymer rubber powders; 1.3～1.8 parts of intensity activator; 0.1～0.5 part of little foam type air entrapment agent; 0.1～0.6 part of organic thickening agent; Wherein said redispersible polymer rubber powder is a kind of in polyethylene kind, polyvinyl chloride, polypropylene-base, polyacrylate(s), polyoxyethylene lauryl vinyl acetate class, polyvinyl acetate (PVA) class, the polystyrene rubber powder or their mixture and multipolymer; Described organic thickening agent is cellulose ethers organic thickening agent or propylene class organic thickening agent.
3. heat preservation mortar for outer wall of buildings according to claim 1 and 2, it is characterized in that described compound heat-insulation aggregate for through the synthetic pearlstone of grain composition, float one or more the mixture in pearl, light ceramic, the expanded polystyrene particle.
4. heat preservation mortar for outer wall of buildings according to claim 3, wherein said pearlstone are surperficial clinkering pearlstone.
5. heat preservation mortar for outer wall of buildings according to claim 1 and 2 is characterized in that described staple fibre is that length is one or more the mixture in the high elastic coefficient surface modification polypropylene monofilament staple fibre, mineral short fibre, alkali resistant glass fibre of 4～6mm.
6. heat preservation mortar for outer wall of buildings according to claim 3 is characterized in that described staple fibre is that length is one or more the mixture in the high elastic coefficient surface modification polypropylene monofilament staple fibre, mineral short fibre, alkali resistant glass fibre of 4～6mm.
7. heat preservation mortar for outer wall of buildings according to claim 4 is characterized in that described staple fibre is that length is one or more the mixture in the high elastic coefficient surface modification polypropylene monofilament staple fibre, mineral short fibre, alkali resistant glass fibre of 4～6mm.
8. heat preservation mortar for outer wall of buildings according to claim 1 and 2 is characterized in that described intensity activator is calcium formiate class or calcium sulfate class hardening accelerator.
9. heat preservation mortar for outer wall of buildings according to claim 3 is characterized in that described intensity activator is calcium formiate class or calcium sulfate class hardening accelerator.
10. heat preservation mortar for outer wall of buildings according to claim 4 is characterized in that described intensity activator is calcium formiate class or calcium sulfate class hardening accelerator.
11. heat preservation mortar for outer wall of buildings according to claim 5 is characterized in that described intensity activator is calcium formiate class or calcium sulfate class hardening accelerator.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2004100181874A CN100406403C (en) | 2004-04-30 | 2004-04-30 | Heat-insulating mortar for external wall of building |
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| CNB2004100181874A CN100406403C (en) | 2004-04-30 | 2004-04-30 | Heat-insulating mortar for external wall of building |
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| CN1690008A CN1690008A (en) | 2005-11-02 |
| CN100406403C true CN100406403C (en) | 2008-07-30 |
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