CN101250910A - Spray coating rigid foam polyurethane water-proof fireproof heat-preserving wall as well as construction method thereof - Google Patents
Spray coating rigid foam polyurethane water-proof fireproof heat-preserving wall as well as construction method thereof Download PDFInfo
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- CN101250910A CN101250910A CNA2008100201185A CN200810020118A CN101250910A CN 101250910 A CN101250910 A CN 101250910A CN A2008100201185 A CNA2008100201185 A CN A2008100201185A CN 200810020118 A CN200810020118 A CN 200810020118A CN 101250910 A CN101250910 A CN 101250910A
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Abstract
The invention relates to a sprayed rigid foam polyurethane waterproof fireproof heat insulation wall and a construction method thereof. The structure of a composite layer of the wall from the inside to the outside in order is as follows: a base course wall (1), an interfacial agent plugging lower layer (2), a sprayed rigid foam polyurethane waterproof heat insulation layer (3), an interfacial agent seal course (4), an inorganic lightweight aggregate cement mortar screeding cracking resistant layer (5) which is buried with alkali-resistant glass fiber gridding cloth (6), a flexible waterproof layer (7) and a finishing coat (8), which are solidified into a whole, wherein, the dry powder of the inorganic lightweight aggregate cement mortar contains inorganic lightweight aggregate (one or the mixture of expanded vermiculite, obturator perlite or pumice) with 10-25 weight percent and the grain diameter less than or equal to 1 mm. The wall of the invention has light self-weight and good integrity, and solves the problem of bad waterproof heat insulation of the whole wall due to the rugged surface of the sprayed rigid foam polyurethane heat insulation layer. The construction method is easy to operate and low in cost.
Description
Technical field
The present invention relates to a kind of spraying hard-foam polyurethane water-proof fireproof heat-preserving wall and job practices thereof.
Background technology
At present existing waterproofing materials and the most performance of heat insulating material of China is single, can not take into account waterproof and heat-insulating property, and construction waterproofing engineering and building energy conservation engineering construct respectively, and construction sequence is loaded down with trivial details, the quality instability.The material that existing thermal-insulating waterproof is enjoyed a double blessing is a hard-foam polyurethane.But because the foaming process of polyurethane is irregular, therefore, the hard-foam polyurethane insulation layer that is difficult to acquisition surfacing smooth hard-foam polyurethane insulation layer, particularly in-situ spraying is all the more so.Constitute leveling layer if criticize the plastering mortar of smearing common usefulness, then because of the surface irregularity of hard-foam polyurethane insulation layer, make that the plastering mortar consumption is many and leveling layer itself is in uneven thickness, problems such as final metope is easy to generate cracking, peel off, thus the insulation and the waterproof effect of hard-foam polyurethane also influenced.Chinese patent discloses some technical schemes, for example, 200610045579.9 the method for employing planing solves the planeness problem of spraying hard-foam polyurethane insulation layer surface, but implements the rigid polyurethane foam fragment under cumbersome and the plane at the scene, can pollute the job site; And for example 02153346.6 and 02288980.9 all adopt on basic unit's body of wall, plug-in one deck longitude and latitude graticule line sprays hard-foam polyurethane more earlier, and with the planeness of control hard-foam polyurethane insulation layer surface, but constructing operation complexity and quality also are not easy control.
Summary of the invention
First purpose of the present invention provides a kind of spraying hard-foam polyurethane water-proof fireproof heat-preserving wall from heavy and light, good integrity, solves because the problem of the uneven waterproof thermal-insulated difference of whole body of wall that causes of spraying hard-foam polyurethane insulation layer surface.
The technical scheme that realizes first purpose of the present invention is: a kind of spraying hard-foam polyurethane water-proof fireproof heat-preserving wall, has lamination layer structure, be characterized in, composite bed is from the inside to the outside successively: basic unit's body of wall, interfacial agents back cover layer, spraying hard-foam polyurethane water-proof heat-insulation layer, interfacial agents confining bed, pressure are embedded with inorganic lightweight aggregate cement mortar screeding crack-resistant layer, flexible waterproof layer and the finish coat of alkali-resistant glass fibre grid cloth, and each layer is settable cementitious to be one.
Above-mentioned spraying hard-foam polyurethane water-proof fireproof heat-preserving wall, its constitute the levelling crack-resistant layer the inorganic lightweight aggregate cement mortar raw material and the percetage by weight content of each raw material be: cement 15%～30%, sand 40%～60%, inorganic lightweight aggregate 10%～25%, redispersible rubber powder 1.0%～3.0%, cellulose ether 0.05%～0.3%, foaming agent 0.02%～0.05%, thickening agent 0.2%～1.5%, lignocellulosic 0.1%～0.2%, modified alta-mud or attapulgite 1%～2%, silicon ash 0～5%, flyash 0～15%, the short polypropylene fibre 0～0.2% of cutting.
Above-mentioned spraying hard-foam polyurethane water-proof fireproof heat-preserving wall, its combustibility grade that constitutes the inorganic lightweight aggregate cement mortar of described levelling crack-resistant layer is the A level.
Above-mentioned spraying hard-foam polyurethane water-proof fireproof heat-preserving wall, it constitutes the dry density＜800kg/m of the inorganic lightweight aggregate cement mortar of levelling crack-resistant layer
3
The inorganic lightweight aggregate of above-mentioned spraying hard-foam polyurethane water-proof fireproof heat-preserving wall is one or more the mixture in expanded vermiculite, closed perlite or the float stone; Particle diameter≤the 1mm of inorganic lightweight aggregate.
Above-mentioned spraying hard-foam polyurethane water-proof fireproof heat-preserving wall, it constitutes the alkali-resistant glass fibre grid cloth of levelling crack-resistant layer and the distance of levelling crack-resistant layer external surface is 2mm～3mm.
Above-mentioned spraying hard-foam polyurethane water-proof fireproof heat-preserving wall, its flexible water layer thickness≤1mm.
Second purpose of the present invention provides a kind of job practices of building above-mentioned spraying hard-foam polyurethane water-proof fireproof heat-preserving wall, easy operating, and cost is low.
The technical scheme that realizes second purpose of the present invention is: a kind of job practices of building above-mentioned spraying hard-foam polyurethane water-proof fireproof heat-preserving wall has the following steps:
Raw material, interfacial agents, alkali-resistant glass fibre grid cloth, flexible putty or polyurea waterproof coating material or polymer cement waterproof paint, exterior wall coating material or face brick or stone material and the various construction tool and the equipment of a, preparation hard-foam polyurethane raw material, inorganic lightweight aggregate cement mortar, standby;
B, preparation inorganic lightweight aggregate cement mortar, standby;
C, cleaning basic unit surface of wall;
D, the basic unit's surface of wall after cleaning, construction in the following order:
Criticize and be coated with interfacial agents back cover layer; Spraying hard-foam polyurethane water-proof heat-insulation layer; Criticize and be coated with the interfacial agents confining bed; Smear the inorganic lightweight aggregate cement mortar earlier, press and bury the alkali-resistant glass fibre grid cloth, floating back forms the levelling crack-resistant layer, and the distance of its alkali-resistant glass fibre grid cloth and levelling crack-resistant layer external surface is 2mm～3mm; Criticize and be coated with flexible water layer thickness≤1mm; Make finish coat at last.
The job practices of above-mentioned spraying hard-foam polyurethane water-proof fireproof heat-preserving wall, the raw material of the inorganic lightweight aggregate cement mortar of its formation levelling crack-resistant layer and the percetage by weight content of each raw material are: cement 15%～30%, sand 40%～60%, inorganic lightweight aggregate 10%～25%, redispersible rubber powder 1.0%～3.0%, cellulose ether 0.05%～0.3%, foaming agent 0.02%～0.05%, thickening agent 0.2%～1.5%, lignocellulosic 0.1%～0.2%, modified alta-mud or attapulgite 1%～2%, silicon ash 0～5%, flyash 0～15%, the short polypropylene fibre 0～0.2% of cutting; The combustibility grade of this inorganic lightweight aggregate cement mortar is the A level, dry density＜800kg/m
3
The job practices of above-mentioned spraying hard-foam polyurethane water-proof fireproof heat-preserving wall, its inorganic lightweight aggregate are one or more the mixtures in expanded vermiculite, closed perlite or the float stone; Particle diameter≤the 1mm of inorganic lightweight aggregate.
Various raw materials and equipment related in the job practices of above-mentioned spraying hard-foam polyurethane water-proof fireproof heat-preserving wall are the general product of building trade, can buy from market.
Technique effect of the present invention is: spraying hard-foam polyurethane water-proof fireproof heat-preserving wall of the present invention is a lamination layer structure, outside spraying hard-foam polyurethane water-proof heat-insulation layer, compound inorganic lightweight aggregate cement mortar screeding crack-resistant layer, because this levelling crack-resistant layer has following advantage: first levelling crack-resistant layer is from heavy and light.Scrape under the situation of thickness at equal batch, the spreading area of per kilogram inorganic lightweight aggregate cement mortar is about 2 times of common plastering mortar, therefore, reduced the vertical shearing power of levelling crack-resistant layer with spraying hard-foam polyurethane water-proof heat-insulation layer, can overcome because of the polyurethane insulation coating surface irregularity, the leveling mortar consumption makes the shortcoming of wall thermal insulating and poor stability more; It two is that levelling crack-resistant layer crackle reduces.Levelling crack-resistant layer of the present invention is compared with spraying hard-foam polyurethane water-proof heat-insulation layer, and the coefficient of thermal conductivity gap is less relatively, has reduced the crackle that causes because of the temperature difference, has guaranteed wall quality; It three is that the levelling crack-resistant layer has heat-insulating property.It is much lower that levelling crack-resistant layer coefficient of thermal conductivity of the present invention is compared the conventional cement mortar leveling layer, has heat insulation effect, therefore, strengthened heat insulation effect; It four is that the levelling crack-resistant layer has fireproof performance.Has excellent fireproof performance owing to constitute the inorganic lightweight aggregate cement mortar of levelling crack-resistant layer of the present invention, its combustibility grade is the A level, has improved the fireproof performance of whole body of wall, and also pollution-free to environment, therefore, the levelling crack-resistant layer of the present invention fireprotection layer that still is environment-friendly type; It five is that the levelling crack-resistant layer has good filling property.Constitute the particle diameter≤1mm of the inorganic lightweight aggregate of levelling crack-resistant layer of the present invention, smear phenomenon such as no hollowing in the process, one time levelling thickness can reach 5～10mm, not only can overcome the shortcoming that spraying hard-foam polyurethane water-proof heat-insulation layer surface irregularity is brought, but also can remedy because in-situ spraying hard-foam polyurethane material can't guarantee the deficiency locating to cover fully on part such as window, doorway etc., wall quality improves, and it is also easier to construct; Six to be that the levelling crack-resistant layer has simultaneously floating for it, cracking resistance, insulation, fire-proof function, not only simplify construction, can also overcome because batch be coated with that adhesion stress is poor between each layer that multilayer occurs and the hard-foam polyurethane water-proof heat-insulation layer, modulus of elasticity differs greatly, the leveling layer contraction greatly, problems such as not enough, easy to crack, the whole system waterproof fireproofing poor performance of compatibility of deformation.Therefore, outside the spraying hard-foam polyurethane water-proof heat-insulation layer of the present invention, need not plug-in graticule, also need not the hard-foam polyurethane insulation layer of planishing, just can overcome the shortcoming that spraying hard-foam polyurethane water-proof heat-insulation layer surface irregularity is brought, the spraying hard-foam polyurethane water-proof fireproof heat-preserving wall collection waterproof fireproofing that builds up insulation is one, easy operating, materials reduce, and have reduced cost.
Description of drawings
Fig. 1 sprays a kind of structural representation (sectional drawing) of hard-foam polyurethane water-proof fireproof heat-preserving wall for the present invention.
The specific embodiment
Below in conjunction with drawings and Examples the present invention is further described in detail, but not limited.
As shown in Figure 1, a kind of spraying hard-foam polyurethane water-proof fireproof heat-preserving wall, has lamination layer structure, this composite bed is from the inside to the outside successively: basic unit's body of wall 1, interfacial agents back cover layer 2, spraying hard-foam polyurethane water-proof heat-insulation layer 3, interfacial agents confining bed 4, pressure are embedded with inorganic lightweight aggregate cement mortar screeding crack-resistant layer 5, flexible waterproof layer 7 and the finish coat 8 of alkali-resistant glass fibre grid cloth 6, and each layer is settable cementitious to be one.
Illustrate and build the job practices that the present invention sprays the hard-foam polyurethane water-proof fireproof heat-preserving wall.
A, prepare the raw material of hard-foam polyurethane raw material, inorganic lightweight aggregate cement mortar, with the interfacial agents of hard-foam polyurethane coupling alkali containing glass fibre grid cloth, flexible putty or polyurea waterproof coating material or polymer cement waterproof paint, exterior wall coating material or face brick or stone material and various construction tool and equipment (above raw material and equipment are the general product of building trade, can buy from market), standby;
B, preparation inorganic lightweight aggregate cement mortar:
Take by weighing the raw material of inorganic lightweight aggregate cement mortar by following prescription: cement 15%～30%, sand 40%～60%, inorganic lightweight aggregate 10%～25%, redispersible rubber powder 1.0%～3.0%, cellulose ether 0.05%～0.3%, foaming agent 0.02%～0.05%, thickening agent 0.2%～1.5%, lignocellulosic 0.1%～0.2%, modified alta-mud or attapulgite 1%～2% more than are percetage by weight; At the construction field (site) the raw material that takes by weighing is dropped in the container, add suitable quantity of water stir (10min at least) make mortar, standby, perhaps become mortar by above-mentioned formulated by special factory after, be transported to the job site, standby;
At the dry density＜800kg/m that guarantees the inorganic lightweight aggregate cement mortar
3Condition under, the concrete consumption of each raw material can be selected in above-mentioned scope in the prescription;
Inorganic lightweight aggregate in the inorganic lightweight aggregate cement mortar is one or more the mixture in expanded vermiculite, closed perlite or the float stone, can select according to actual conditions; Particle diameter≤the 1mm of inorganic lightweight aggregate;
Other raw materials in the inorganic lightweight aggregate cement mortar are the general products of builing industry;
C, cleaning basic unit body of wall 1 surface: remain in the foreign material, dust, greasy dirt of basic unit's surface of wall etc. when removing construction;
D, basic unit's body of wall 1 surface after cleaning, construct with universal method in the following order:
Criticize and be coated with interfacial agents back cover layer 2;
Spraying hard-foam polyurethane water-proof heat-insulation layer 3, its thickness can be according to construction requirement at 10mm～50mm, and scope is selected;
Criticize and be coated with interfacial agents confining bed 4;
Smear the inorganic lightweight aggregate cement mortar earlier, press and bury alkali-resistant glass fibre grid cloth 6, floating back forms levelling crack-resistant layer 5, and its alkali-resistant glass fibre grid cloth 6 is 2mm～3mm with the distance of levelling crack-resistant layer 5 external surfaces;
From flexible putty or polyurea waterproof coating material or polymer cement waterproof paint, select wherein a kind of as required for use, batch be coated with the flexible waterproof layer 7 of thickness≤1mm;
Select for use coating or face brick or stone material to make finish coat 8 as required, thereby make spraying hard-foam polyurethane water-proof fireproof heat-preserving wall of the present invention.
Embodiment 2
Basic identical with embodiment 1, difference is: the prescription of the inorganic lightweight aggregate cement mortar among the step b, mixed the short polypropylene fibre of cutting, thereby increased the crack resistance of levelling crack-resistant layer 5, in prescription, the weak point that mixes is cut polypropylene fibre and is accounted for 0.2% (weight) at most, and concrete incorporation can be according to building cost and quality requirement decision;
Embodiment 3
Basic identical with embodiment 1, difference is: the prescription of the inorganic lightweight aggregate cement mortar among the step b, in silicon ash or the flyash one or both have been mixed, thereby reduced inorganic lightweight aggregate cement mortar dry density, improved workability, increased the wall thermal insulating effect, in prescription, the silicon ash that mixes accounts for 5% (weight) at most, and flyash accounts for 15% (weight) at most, and concrete incorporation can be according to building cost, quality requirement and raw material sources decision;
Embodiment 4
Basic identical with embodiment 1, difference is: the prescription of the inorganic lightweight aggregate cement mortar among the step b, polypropylene fibre, silicon ash and flyash have been mixed simultaneously, thereby both increased the crack resistance of levelling crack-resistant layer 5, reduced dry density again, improved workability, increased the wall thermal insulating effect, though cost is slightly high, but long-term good energy-conserving effect, in prescription, the polypropylene fibre that mixes accounts at most that 0.2% (weight), silicon ash account for 5% (weight) at most, flyash accounts for 15% (weight) at most, and the concrete incorporation comprehensively property/price ratio of body of wall is definite.
Spraying hard-foam polyurethane water-proof fireproof heat-preserving wall of the present invention, detect through test room, its resistance of heat transfer has reached relevant energy-conservation INSULATION DESIGN requirement, waterproof effect reaches the requirement of GB 50404-2007 hard-foam polyurethane thermal-insulating waterproof engineering legislation, the impermeability test passes, body of wall composite bed total suction has only 497g/m
2, be far smaller than 1000g/m in the standard
2Requirement.
Claims (10)
1. one kind sprays the hard-foam polyurethane water-proof fireproof heat-preserving wall, has lamination layer structure, it is characterized in that, composite bed is from the inside to the outside successively: basic unit's body of wall (1), interfacial agents back cover layer (2), spraying hard-foam polyurethane water-proof heat-insulation layer (3), interfacial agents confining bed (4), pressure are embedded with inorganic lightweight aggregate cement mortar screeding crack-resistant layer (5), flexible waterproof layer (7) and the finish coat (8) of alkali-resistant glass fibre grid cloth (6), and each layer is settable cementitious to be one.
2. spraying hard-foam polyurethane water-proof fireproof heat-preserving wall according to claim 1, it is characterized in that, constitute the raw material of inorganic lightweight aggregate cement mortar of described levelling crack-resistant layer (5) and the percetage by weight content of each raw material and be: cement 15%～30%, sand 40%～60%, inorganic lightweight aggregate 10%～25%, redispersible rubber powder 1.0%～3.0%, cellulose ether 0.05%～0.3%, foaming agent 0.02%～0.05%, thickening agent 0.2%～1.5%, lignocellulosic 0.1%～0.2%, modified alta-mud or attapulgite 1%～2%, silicon ash 0～5%, flyash 0～15%, the short polypropylene fibre 0～0.2% of cutting.
3. spraying hard-foam polyurethane water-proof fireproof heat-preserving wall according to claim 1 and 2 is characterized in that the combustibility grade that constitutes the inorganic lightweight aggregate cement mortar of described levelling crack-resistant layer (5) is the A level.
4. spraying hard-foam polyurethane water-proof fireproof heat-preserving wall according to claim 1 and 2 is characterized in that, constitutes the dry density＜800kg/m of the inorganic lightweight aggregate cement mortar of described levelling crack-resistant layer (5)
3
5. spraying hard-foam polyurethane water-proof fireproof heat-preserving wall according to claim 2 is characterized in that, described inorganic lightweight aggregate is one or more the mixture in expanded vermiculite, closed perlite or the float stone; Particle diameter≤the 1mm of inorganic lightweight aggregate.
6. spraying hard-foam polyurethane water-proof fireproof heat-preserving wall according to claim 1 is characterized in that, constituting the alkali-resistant glass fibre grid cloth (6) of described levelling crack-resistant layer (5) and the distance of levelling crack-resistant layer (5) external surface is 2mm～3mm.
7. spraying hard-foam polyurethane water-proof fireproof heat-preserving wall according to claim 1 is characterized in that, described flexible waterproof layer (7) thickness≤1mm.
8. a job practices of building claim 1 spraying hard-foam polyurethane water-proof fireproof heat-preserving wall is characterized in that, has the following steps:
Raw material, interfacial agents, alkali-resistant glass fibre grid cloth, flexible putty or polyurea waterproof coating material or polymer cement waterproof paint, exterior wall coating material or face brick or stone material and the various construction tool and the equipment of a, preparation hard-foam polyurethane raw material, inorganic lightweight aggregate cement mortar, standby;
B, preparation inorganic lightweight aggregate cement mortar, standby;
C, cleaning basic unit's body of wall (1) surface;
D, basic unit's body of wall (1) surface after cleaning, construction in the following order:
Criticize and be coated with interfacial agents back cover layer (2); Spraying hard-foam polyurethane water-proof heat-insulation layer (3); Criticize and be coated with interfacial agents confining bed (4); Smear the inorganic lightweight aggregate cement mortar earlier, press and bury alkali-resistant glass fibre grid cloth (6), floating back forms levelling crack-resistant layer (5), and its alkali-resistant glass fibre grid cloth (6) is 2mm～3mm with the distance of levelling crack-resistant layer (5) external surface; Criticize and be coated with flexible waterproof layer (7) thickness≤1mm; Make finish coat (8) at last.
9. the job practices of spraying hard-foam polyurethane water-proof fireproof heat-preserving wall according to claim 8, it is characterized in that, constitute the raw material of inorganic lightweight aggregate cement mortar of described levelling crack-resistant layer (5) and the percetage by weight content of each raw material and be: cement 15%～30%, sand 40%～60%, inorganic lightweight aggregate 10%～25%, redispersible rubber powder 1.0%～3.0%, cellulose ether 0.05%～0.3%, foaming agent 0.02%～0.05%, thickening agent 0.2%～1.5%, lignocellulosic 0.1%～0.2%, modified alta-mud or attapulgite 1%～2%, silicon ash 0%～5%, flyash 0～15%, the short polypropylene fibre 0～0.2% of cutting; The combustibility grade of this inorganic lightweight aggregate cement mortar is the A level, dry density＜800kg/m
3
10. the job practices of spraying hard-foam polyurethane water-proof fireproof heat-preserving wall according to claim 9 is characterized in that, described inorganic lightweight aggregate is one or more the mixture in expanded vermiculite, closed perlite or the float stone; Particle diameter≤the 1mm of inorganic lightweight aggregate.
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