CN108915107B - Construction method of EPS inorganic infiltration insulation board - Google Patents

Construction method of EPS inorganic infiltration insulation board Download PDF

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Publication number
CN108915107B
CN108915107B CN201810833126.5A CN201810833126A CN108915107B CN 108915107 B CN108915107 B CN 108915107B CN 201810833126 A CN201810833126 A CN 201810833126A CN 108915107 B CN108915107 B CN 108915107B
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insulation board
mortar
eps inorganic
eps
less
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CN108915107A (en
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李卫丰
谢永强
龚乐
王晋
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Sinohydro Bureau 11 Co Ltd
Powerchina 11th Bureau Engineering Co Ltd
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Sinohydro Bureau 11 Co Ltd
Powerchina 11th Bureau Engineering Co Ltd
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74Heat, sound or noise insulation, absorption, or reflection . Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/76Heat, sound or noise insulation, absorption, or reflection . Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
    • E04B1/78Heat insulating elements
    • E04B1/80Heat insulating elements slab-shaped
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74Heat, sound or noise insulation, absorption, or reflection . Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/76Heat, sound or noise insulation, absorption, or reflection . Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
    • E04B1/762Exterior insulation of exterior walls
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74Heat, sound or noise insulation, absorption, or reflection . Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/76Heat, sound or noise insulation, absorption, or reflection . Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
    • E04B1/762Exterior insulation of exterior walls
    • E04B1/7629Details of the mechanical connection of the insulation to the wall

Abstract

The invention discloses a construction method of an EPS inorganic infiltration insulation board, which comprises the steps of selecting the EPS inorganic infiltration insulation board as a high-rise outer wall outer insulation project, adopting a process combining adhesive bonding and anchor bolt fixing, additionally arranging a support frame, calculating wind pressure, bonding strength and various loads, adopting special polymer mortar bonding, applying a point-and-frame method for bonding, wherein the bonding area exceeds 50%, simultaneously arranging embedding belts (the material is 50 × 50 × 3 mm angle iron, brushing two layers of anti-rust paint to prevent rusting) at every 3 layers, arranging the embedding belts at a gable part, continuously arranging, supporting the insulation board by the embedding belts to reduce the load, improving the safety performance of the whole system, preventing later-period falling in use, and solving the construction hidden danger problem of the insulation material with high volume weight outside the outer wall.

Description

Construction method of EPS inorganic infiltration insulation board
Technical Field
The invention relates to the field of external wall insulation, in particular to a construction method of an EPS inorganic infiltration insulation board.
Background
At present, China is in the rapid development stage of urbanization, the building scale and the building quantity are increasingly increased, however, statistical data show that more than 97% of China is high-energy-consumption buildings, and the heat transfer coefficient of the outer wall of most heating areas in China is about 4 times that of the countries with similar developed climate. At the present stage, China proposes the goals of greatly improving the utilization efficiency of energy resources and remarkably catching energy conservation in the fields of buildings, industry, transportation, public institutions and the like for advocating an environmental protection concept, vigorously implements the building energy conservation engineering, is an important measure for implementing sustainable development strategies, realizing national energy conservation planning goals and reducing emission of greenhouse gases, and the EPS inorganic infiltration heat-insulation board undoubtedly accords with the global development trend, not only continues the advantages of small heat conductivity coefficient, good heat-insulation effect, light weight and the like of the traditional EPS foam board, but also overcomes the defects of poor flame-retardant effect of the traditional EPS foam board, simultaneously overcomes the problems of heavy quality and high price of similar flame-retardant effect materials in the market, is an ideal heat-insulation material, and has wide market demands.
The EPS board is a honeycomb structure formed by mutually fusing a plurality of single particles, and even if the EPS board is buried below an underground water-saturated layer for 9 years, the water absorption capacity cannot exceed 10%; except gasoline, most solvents have little influence on the EPS performance, have stronger moisture resistance and good air permeability, and can isolate rainwater and allow moisture to permeate. Except gasoline, most solvents have little influence on the EPS inorganic permeable insulation board. Therefore, EPS has better anti-aging capability.
The EPS inorganic infiltration insulation board has relatively large porosity, relatively rough surface and easy polishing, can be wetted when being bonded with mortar, forms mechanical interlocking and has relatively strong bonding force. Meanwhile, the EPS plate has moderate strength, good flexibility and strong adaptive deformability. Through checking calculation, the outer wall heat insulation system formed by the EPS boards can completely bear loads such as wind pressure, dead weight and the like, and domestic and foreign engineering practices show that the heat insulation outer vertical surfaces of the common EPS boards are not easy to crack, hollowly and fall off, and have strong cohesive force and durability.
Because the EPS inorganic material permeates the inner cavity structure of the heat-insulation board, the material has low heat conductivity coefficient. The research shows that: the heat conductivity coefficient of EPS has positive correlation with the water content, and when the water content of EPS is 1%, the heat conductivity coefficient is increased by about 5%; when the water content is 5%, the heat conductivity coefficient can be increased by 75% at most. But the EPS still has better heat preservation and heat insulation properties because of low water absorption rate and better moisture resistance.
The maximum working temperature of the EPS inorganic infiltration insulation board can reach 80 ℃, and the EPS performance is relatively stable under general conditions; but when the temperature reaches 150 ℃, the EPS inorganic infiltration insulation board begins to melt; if the temperature continuously rises, the EPS inorganic infiltration heat-insulation board will be decomposed and generate combustible gas, but because the EPS inorganic infiltration heat-insulation board is added with inorganic flame retardant, the flame can not be diffused, and can be automatically extinguished within a few seconds.
The EPS can be recycled and reused, and has good environmental protection. There are a number of ways to recycle EPS: (1) the EPS is mechanically recovered to be made into XPS again, or the XPS is made into new EPS for use through hot melting regeneration; (2) chemical recycling, and making into waterproof paint for cartons, building paint and the like.
Compared with other heat insulation materials, the EPS inorganic infiltration heat insulation board has the advantages of simple production process, low cost, small product difference and stable and reliable quality. Therefore, the realization and application of the EPS inorganic infiltration insulation board in the field of building insulation external walls is a problem to be solved urgently at present.
Disclosure of Invention
The invention aims to solve the problem of construction hidden trouble of heat insulation of high-volume-weight heat insulation materials outside an outer wall in the prior art, and provides a construction method of an EPS inorganic infiltration heat insulation plate with high safety performance and low cost.
In order to achieve the above purpose, the present invention provides the following technical solutions: a construction method of an EPS inorganic infiltration insulation board comprises the following steps:
step 01: preparing a working surface and treating a base layer, wherein the base layer wall surface is clean, dry and smooth and has no loose mortar and sundries, and a door and window frame is installed in place; the surface strength of the base layer surface is not less than 0.5 Mpa; in the construction process and within 24 hours after construction, the environment temperature of the construction site and the surface temperature of the base wall are not lower than 0 ℃, and the average temperature is not lower than 5 ℃;
step 02: hanging a reference line;
step 03: the EPS inorganic infiltration insulation board is pasted and installed by adopting polymer bonding special mortar, and water and bonding mortar are as follows: 4-1.5: 4, the weight ratio of the components is prepared;
the specific pasting method comprises the following steps:
(1) window frame mesh cloth is pre-pasted on detailed processing parts of the outer wall, specifically on EPS inorganic infiltration insulation boards at cornices, plinths and edges of door and window holes, and the width of the window frame mesh cloth is 280-320 mm;
(2) uniformly coating insulation board pasting mortar on an insulation board 45-55 mm away from the boundary of the insulation board by a point frame method, wherein the ratio of the area of the point frame to the area of the insulation board is not less than 50%;
(3) after the adhesive mortar is coated on the EPS inorganic infiltration insulation board, the EPS inorganic infiltration insulation board is quickly adhered on a wall; the boards are tightly squeezed, no gap is left between the boards, bonding mortar cannot be smeared at the joint, the bonding mortar of the heat-insulating board which is possibly squeezed out is removed in time after each board is pasted, the surface of the EPS inorganic permeable heat-insulating board is not square or is not cut to form a gap, and the EPS inorganic permeable heat-insulating board strips are plugged and ground to be flat; the vertical staggered joint plate length of the upper and lower rows of EPS inorganic infiltration insulation boards is 1/2;
step 04: mounting a support bracket; starting from the pasting of the first layer of the EPS inorganic infiltration insulation board, embedding belts are arranged at intervals of 3 layers, the embedding belts are arranged at the position of a gable through a fixed expansion pipe bolt, and the embedding belts support the EPS inorganic infiltration insulation board to reduce load and improve the safety performance of the whole system; the embedding belt brackets are arranged along the slab joints of the heat insulation board every 1200 mm;
step 05: installing an anchoring part, wherein the anchoring part is installed within 24-48 hours after the EPS inorganic infiltration insulation board is pasted; each plate below 7 layers is not less than 8, and each square meter is not less than 4 complete anchoring points; each block of 8-18 layers is not less than 10, and each square meter is not less than 5 complete anchoring points; each plate is not less than 11 above 18 layers, and each square meter is not less than 6 complete anchoring points; the aperture is determined according to the diameter of the anchor, the wall-entering depth of the concrete wall is not less than 30 mm, and the wall-entering depth of the filling wall is not less than 60 mm. Screwing the anchoring piece into the depth of not less than 40 mm;
step 06: polishing and repairing; the seam width of the EPS inorganic permeable insulation board exceeds 2mm, the EPS inorganic permeable insulation board with the corresponding thickness is used for filling, and the height of the abutted seam is larger than 1.5mm, and the EPS inorganic permeable insulation board is polished to be flat by using sand paper or a special polishing machine; the grinding operation is carried out after the EPS inorganic infiltration insulation board is pasted for 24 hours, so that disturbance to the pasting layer is avoided, and the bonding strength between the board and the base wall is weakened;
step 07: coating adhesive cement on the bottom layer; after the EPS inorganic infiltration insulation board is installed and checked to be qualified, plastering mortar is carried out, the plastering is divided into a bottom layer and a surface layer for two times, the bottom layer is plastered on the surface of the EPS inorganic infiltration insulation board, the thickness of a standard layer is not less than 6mm, and meanwhile, the turned-over gridding cloth is pressed into the plastering mortar;
step 08: paving and pasting a composite alkali-resistant glass fiber net; the paving method comprises the following steps:
(1) coating EPS inorganic infiltration insulation board overlay reinforcing mortar on the bottom layer, and uniformly coating the mortar on the EPS inorganic infiltration insulation board;
(2) the composite alkali-resistant glass fiber net is laid from top to bottom, is straightened and flattened along the vertical and horizontal directions, the bent surface faces inwards, and the composite alkali-resistant glass fiber net is flattened by a trowelling trowel from the middle to the upper side and the lower side so as to be tightly attached to the bottom layer EPS inorganic infiltration insulation board cover surface reinforcing mortar;
(3) the peripheries of the outer sides of the door and window openings are respectively added with a layer of 300mm 200mm 45-degree oblique composite alkali-resistant glass fiber net for reinforcement, and the glass fiber nets laid in large area are rotated along the door and window to be turned and pasted;
(4) applying glass fiber net and insulation board cover surface reinforcing mortar to the ends of the EPS inorganic infiltration insulation boards around the window, the doorway and other openings to wrap and level the EPS inorganic infiltration insulation boards;
(5) the left and right lapping widths of the mesh cloth are not less than 100mm, the upper and lower lapping widths are not less than 80mm, the original mortar shortage part is supplemented by polymer mortar at the local lapping part, the two-way angle winding from each side is needed at the male and female corners, and the mutual lapping widths are not less than 200 mm; after the glass fiber net is laid, checking the connection condition of the external corner net, smearing anti-crack mortar for the second time, and coating the glass fiber net in the anti-crack mortar;
step 09: coating EPS inorganic infiltration insulation board cover surface mortar;
step 10: and (5) patching and repairing the holes.
The technical scheme has the advantages that the EPS inorganic infiltration insulation board is selected as a high-rise outer wall outer insulation project, the process of combining adhesive bonding and anchor bolt fixing is adopted, the process of combining support frames is additionally arranged, the wind pressure, the bonding strength and various loads are calculated, special polymer mortar is adopted for bonding, the bonding area is larger than 50% by using a point-and-frame method, meanwhile, embedding belts (the material is 50 × 50 × 3 mm angle iron, two layers of anti-rust paint are brushed to prevent rusting) are arranged at every 3 layers, the embedding belts are continuously arranged at the position of the gable, the insulation board is supported by the embedding belts to reduce the load, the safety performance of the whole system is improved, the later-period use falling is prevented, and the problem of hidden construction danger of the insulation material with high volume weight on the outer wall outer insulation is solved.
Drawings
Fig. 1 is a schematic structural diagram of an exterior wall system according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of dot-frame method pasting according to an embodiment of the invention.
Fig. 3 is a schematic view of the mounting of the support bracket.
FIG. 4 is a schematic view of an alkali-resistant fiberglass mesh attached to a door/window opening according to an embodiment of the present invention.
FIG. 5 is a schematic view of an arrangement of an external corner alkali-resistant glass fiber net in an embodiment of the invention.
FIG. 6 is a schematic view of an arrangement of an inside corner alkali resistant glass fiber net in an embodiment of the invention.
The labels in the figures are: 1. EPS inorganic infiltration insulation board; 2. bonding mortar; 3. a support bracket; 4. alkali-resistant glass fiber web; 5. fixing the expansion pipe bolt; 6. an inner rendering layer; 7. a building wall; 8. an outer leveling layer; 9. coating a surface protection layer with adhesive cement; 10. and (6) a finishing layer.
Detailed Description
The technical solution of the present invention will be further explained and explained with reference to the drawings and the specific embodiments.
A construction method of an EPS inorganic infiltration insulation board is applied to the insulation construction of all exterior walls of 1-8# buildings of a transformation project of Chongzhou Zhao slope administrative village, Xiaojing water Natural village shed family district in the original region in Zhengzhou city, and concretely comprises the following steps:
the project for modifying the enchanted area of Zhao slope administrative village, Xiaojing water natural village in the original area in Zhengzhou city is positioned at the southeast corner of an intersection of a construction road and a Kairyu road, the total building area is about 49.5 ten thousand square meters, and the project is composed of 1# -13 # buildings and underground garages, wherein the 1# building is 3 underground, 32 above ground and has a shear wall structure; 4 underground floors of 2# -8# floors, 34 above-ground floors and shear wall structures; floor 3 below floor 9 (commercial), floor 19/24 above ground, frame + shear wall structure. The manpower and material costs of various insulation boards are arranged as follows:
item categories Item level Labour cost and materials (Yuan/m 2)
XPS insulation board Class A 150
Pearlite insulation board Class A 220
Rock wool insulation board Class A 180
EPS inorganic infiltration insulation board Class A 110
From the above table, the economic benefit of the EPS inorganic infiltration insulation board is obvious, and the cost is reduced by about 1/4 compared with the cost of the common insulation material. Therefore, the EPS inorganic infiltration insulation board is adopted for construction in the construction process of the No. 1-8 building outer wall of the project, and the outer wall comprises an inner painting layer 6, a building wall body 7, an outer leveling layer 8, bonding mortar, the EPS inorganic infiltration insulation board, a plastering mortar protective layer 9, alkali-resistant fiber mesh cloth and a decorative layer 10 from inside to outside, as shown in figure 1.
The construction method comprises the following specific steps:
step 01: preparing a working face and performing base layer treatment, wherein the treatment method comprises the following steps:
(1) the base layer wall surface is clean, dry and flat without loose mortar and sundries, and the door and window frame is installed in place;
(2) the base layer surface has certain strength, and the surface strength is not less than 0.5 Mpa;
(3) in the construction process and within 24 hours after construction, the environmental temperature of the construction site and the surface temperature of the base wall are not lower than 0 ℃, the average temperature is not lower than 5 ℃, and direct rain and insolation during construction are avoided;
(4) when the flatness of the base wall body does not meet the requirement, polymer cement mortar can be adopted for leveling, a 2m guiding rule is used for checking, the maximum deviation is not more than 5mm, and the out-of-tolerance part is trimmed by a civil engineering square or repaired by the polymer cement mortar for leveling.
Step 02: hanging a reference line; the method comprises the following steps:
(1) and according to the design of the vertical face of the building and the technical requirements of external wall external heat insulation, popping out horizontal lines, vertical control lines, telescopic stitches and decorative lines of the external door and window on the wall surface.
(2) Hanging vertical reference steel wires at large angles (internal angles and external angles) of the outer wall of the building and other necessary positions; and hanging a horizontal line at a proper position of each floor to control the verticality and the flatness of the EPS inorganic infiltration insulation board.
Step 03: the EPS inorganic infiltration insulation board is mounted in a sticking way; the method comprises the following specific steps:
(1) preparing special mortar for polymer bonding;
the proportion is as follows: the polymer bonding mortar is a one-component external thermal insulation system, and is prepared according to the following requirements 1 (water): 4 (bonding mortar) by weight ratio; firstly, pouring water into a stirrer, and then putting dry powder in proportion for mixing and stirring; stirring time: the stirring time is required to be more than 5 minutes according to the specification, and if the bonding consistency is too high, a small amount of water can be added for blending; the preparation work of the polymer bonding mortar is carried out by professional staff; the polymer bonding slurry is stirred along with use, the stirred polymer mortar is used up within 2 hours, and water is not required to be added for use after the time exceeds 2 hours; the thin consistency of the polymer bonding mortar can be mixed with water for use; quality self-inspection: experience shows that the stirred adhesive is uniform, good in state, fresh and proper in consistency;
(2) sticking an EPS inorganic infiltration insulation board; turning over the mesh cloth: window frame mesh cloth is required to be pre-pasted on the detail processing parts of the outer wall, such as cornices, plinths and EPS inorganic infiltration heat preservation plates at the edges of door and window holes, and the width of the mesh cloth is about 300 mm; quality self-inspection: the grid cloth is subjected to experience inspection and turned over to be standard and meet the requirements; dot frame method: uniformly distributing points on the middle part of the periphery of the heat insulation plate, which is coated with heat insulation plate pasting mortar, wherein the width of the heat insulation plate pasting mortar is about 50mm, and the ratio of the area of a point frame to the area of the heat insulation plate is not less than 50 percent, as shown in figure 2; after the EPS inorganic infiltration insulation board pasting mortar is smeared on the EPS inorganic infiltration insulation board, the EPS inorganic infiltration insulation board is quickly pasted on a wall (note that after the insulation board pasting mortar is smeared on the surface of the insulation board, if the exposure time in the air is too long, a thin skinning layer is easily formed on the surface of a binder to influence the binding strength); flattening by using a horizontal guiding rule to ensure flatness and firm adhesion; the plates are tightly squeezed, no gap is left between the plates, insulation board bonding mortar cannot be smeared at a joint, the insulation board bonding mortar which is possibly squeezed out can be removed in time after one plate is pasted, and if gaps are formed due to the fact that the surface of the EPS inorganic infiltration insulation board is not square or the insulation board is not cut directly, EPS inorganic infiltration insulation boards are plugged in and are ground to be flat; the EPS inorganic infiltration insulation boards are horizontally pasted to ensure continuous combination, and the upper row and the lower row of insulation boards are 1/2 vertical staggered joint boards; generally, the EPS inorganic infiltration insulation board is firstly pasted from a corner (external corner) of a wall, the size is arranged, and the EPS inorganic infiltration insulation board is cut to be vertically connected in a staggered manner when being pasted, so that the corner is ensured to be straight and vertically staggered; when the external corners on the periphery of the window frame and the external corners of the external wall are pasted, the reference line is required to be firstly bounced to be used as a basis for controlling the external corners to be vertical up and down, and the quality inspection is as follows: the EPS inorganic infiltration insulation board is checked to be properly and normatively arranged on the whole, the flatness meets the requirement, the detail processing is good, and the requirement is met.
Step 04, installing support brackets, arranging embedding belts (the material is 50 × 50 × 3 mm angle iron, two anti-rust paints are brushed to prevent rusting) on the first layer, the 4 layers, the 7 layers, the 10 layers, the 13 layers, the 16 layers, the 19 layers, the 22 layers, the 25 layers, the 28 layers, the 31 layers and the 34 layers (every 3 layers) of the EPS inorganic infiltration heat-insulation board, arranging the embedding belts at the positions of the gable walls through fixing expansion pipe bolts 5, supporting the heat-insulation board by the embedding belts to reduce load to improve the safety performance of the whole system, arranging the diameter of the fixing expansion pipe bolts to be 12mm, and arranging the embedding belt brackets along the plate seams of the heat-insulation board every 1200mm, as shown in figure 3.
The method comprises the following steps of 05, installing and fixing anchor bolts, 1) the anchor bolts can be installed after being adhered on the EPS inorganic infiltration insulation board for 24 hours, and are preferably completed within 48 hours, 2) the number of the anchor bolts is specifically, wherein the number of the anchor bolts is not less than 8 (not less than 4 complete anchor bolt fixing points per m2) per 7 layers, not less than 10 (not less than 5 complete anchor bolt fixing points per m2) per 8-18 layers, not less than 11 (not less than 6 complete anchor bolt fixing points per m2) (see the following figure), the hole diameter is determined according to the diameter of the anchor bolt, the concrete wall with the wall-entering depth is not less than 30 mm, the filling wall is not less than 60mm of anchoring nails, the screwing depth is not less than 40mm, the nail head and the disc are not more than the plate surface and are not required to warp, the door and window hole and the edge of the external corner are subjected to reinforcement treatment, the horizontal and vertical spacing is not more than 500mm, the edge of the base layer is not more than 60mm or less than 60mm, the anchor bolts are hammered by adopting phi 8 × 140mm, and the tail of the hammering anchor bolts, the reinforced fixing fixtures, the external corner, the door.
Step 06: polishing and repairing; (1) tightly splicing the seams of the EPS inorganic permeable insulation board, filling the seams with the EPS inorganic permeable insulation board with corresponding thickness when the seam width exceeds 2mm, and if the height difference of the spliced seams is not more than 1.5mm, polishing and flattening the spliced seams by using sand paper or a special polishing machine; the polishing action is preferably soft circular motion, the polishing cannot be carried out along the direction parallel to the plate seam, and the scraps are cleaned by using a brush after being polished to be flat; (2) and the grinding operation is carried out after the EPS inorganic infiltration insulation board is pasted for 24 hours, so that the disturbance of the pasting layer is avoided, and the bonding strength of the board and the base wall is weakened.
Step 07: coating adhesive cement on the bottom layer; after the EPS inorganic infiltration insulation board is installed and checked to be qualified, plastering with the coating mortar; plastering is divided into a bottom layer and a surface layer twice, bottom layer plastering mortar is smeared on the EPS inorganic permeable heat-insulation board surface, the thickness of a standard layer is not less than 6mm, and meanwhile, the turned-over gridding cloth is pressed into the plastering mortar.
Step 08: paving and pasting a composite alkali-resistant glass fiber net; as shown in fig. 4, 5 and 6, cement, sand and other materials cannot be doped in the construction process, secondary water cannot be added absolutely, a trowel cannot be used for soaking water for construction, and a composite alkali-resistant glass fiber net is used in a place where an EPS inorganic infiltration insulation board exists;
(1) coating EPS inorganic infiltration insulation board cover surface reinforcing mortar on the bottom layer, and uniformly coating the mortar on the insulation board;
(2) and the composite alkali-resistant glass fiber net is laid from top to bottom, straightened and flattened along the vertical and horizontal directions, the bent surface faces inwards, and the composite alkali-resistant glass fiber net is flattened by a trowelling trowel from the middle to the upper side and the lower side so as to be tightly attached to the bottom EPS inorganic infiltration insulation board cover surface reinforcing mortar. The composite alkali-resistant glass fiber web is not required to be wrinkled, hollow and warped;
(3) the peripheries of the outer sides of the door and window openings are respectively added with a layer of 300mm 200mm 45-degree oblique composite alkali-resistant glass fiber net for reinforcement, and the glass fiber nets laid in large area are rotated along the door and window to be turned and pasted;
(4) applying glass fiber net and insulation board cover surface reinforcing mortar to the ends of the EPS inorganic infiltration insulation boards around the window, the doorway and other openings to wrap and level the EPS inorganic infiltration insulation boards;
(5) the left and right lapping widths of the gridding cloth are not less than 100mm, the upper and lower lapping widths are not less than 80mm, the original mortar shortage part can be supplemented by polymer mortar at the local lapping part, and the gridding cloth wrinkles, hollows and raised edges cannot be used;
(6) the corners of the male corner and the female corner are required to be wound from each side in two directions, and the mutual lap joint width is not less than 200 mm;
step 09: coating EPS inorganic infiltration insulation board cover surface mortar; after the glass fiber net is laid, the connection condition of the external corner net is mainly checked, then the second time of anti-crack mortar is smeared, the glass fiber net is coated in the anti-crack mortar, the surface layer of the anti-crack mortar is smooth, and the glass fiber net is only covered, so that the outline of the glass fiber net is slightly seen. The surface layer is not continuously kneaded to avoid the formation of empty drum. After the construction of the top surface protection anti-crack mortar is finished, the next procedure can be carried out after the surface mortar is dried.
Step 10: repairing holes and repairing; the hole and the damaged part reserved on the wall surface by using the electric hanging basket are repaired, and the repairing method comprises the following steps:
(1) when the scaffold is detached from the wall, the holes at the connecting part are immediately filled, and are flattened by cement mortar;
(2) precutting an EPS inorganic infiltration insulation board with the same size as the hole and polishing the edge part of the insulation board to enable the insulation board to be tightly filled into the cavity;
(3) after the surface of cement mortar is dried, coating an adhesive with the thickness of 10mm on the back surface of the EPS inorganic infiltration insulation board, plugging the EPS inorganic infiltration insulation board, flattening, adhering to the surface of the base layer, and anchoring by using bolts;
(4) bonding the surface of the EPS inorganic permeable insulation board by using polymer plastering mortar, arranging a mesh in the EPS inorganic permeable insulation board, leveling, drying for 24 hours, and then adding the EPS inorganic permeable insulation board to be level with the original surface layer;
(5) drying for about 8 hours, flattening the irregular part of the surface by using a small-size wet hair brush, and brushing the edge;
(6) the repairing method is the same for the area of the wall surface damaged by other factors.
In the embodiment, the whole external wall of the modification project of No. 1-8 building of Zhao Pongpo administrative village, Xiaojing water Natural village shed house area in the original region in Zhengzhou city is subjected to heat preservation construction, and construction is started in 2018 and 2 months; at present, the external thermal insulation of the external wall is completely constructed.

Claims (1)

1. A construction method of an EPS inorganic infiltration insulation board is characterized by comprising the following steps: the method comprises the following steps:
step 01: preparing a working surface and treating a base layer, wherein the base layer wall surface is clean, dry and smooth and has no loose mortar and sundries, and a door and window frame is installed in place; the surface strength of the base layer surface is not less than 0.5 Mpa; in the construction process and within 24 hours after construction, the environment temperature of the construction site and the surface temperature of the base wall are not lower than 0 ℃, and the average temperature is not lower than 5 ℃;
step 02: hanging a reference line;
step 03: the EPS inorganic infiltration insulation board is pasted and installed by adopting polymer bonding special mortar, and water and bonding mortar are as follows: 4-1.5: 4, the weight ratio of the components is prepared;
the specific pasting method comprises the following steps:
(1) window frame mesh cloth is pre-pasted on detailed processing parts of the outer wall, specifically on EPS inorganic infiltration insulation boards at cornices, plinths and edges of door and window holes, and the width of the window frame mesh cloth is 280-320 mm;
(2) uniformly coating insulation board pasting mortar on an insulation board 45-55 mm away from the boundary of the insulation board by a point frame method, wherein the ratio of the area of the point frame to the area of the insulation board is not less than 50%;
(3) after the adhesive mortar is coated on the EPS inorganic infiltration insulation board, the EPS inorganic infiltration insulation board is quickly adhered on a wall; the boards are tightly squeezed, no gap is left between the boards, bonding mortar cannot be smeared at the joint, the bonding mortar of the heat-insulating board which is possibly squeezed out is removed in time after each board is pasted, the surface of the EPS inorganic permeable heat-insulating board is not square or is not cut to form a gap, and the EPS inorganic permeable heat-insulating board strips are plugged and ground to be flat; the vertical staggered joint plate length of the upper and lower rows of EPS inorganic infiltration insulation boards is 1/2;
step 04: mounting a support bracket; starting from the pasting of the first layer of the EPS inorganic infiltration insulation board, embedding belts are arranged at intervals of 3 layers, the embedding belts are arranged at the position of a gable through a fixed expansion pipe bolt, and the embedding belts support the EPS inorganic infiltration insulation board to reduce load and improve the safety performance of the whole system; the embedding belt brackets are arranged along the slab joints of the heat insulation board every 1200 mm;
step 05: installing an anchoring part, wherein the anchoring part is installed within 24-48 hours after the EPS inorganic infiltration insulation board is pasted; each plate below 7 layers is not less than 8, and each square meter is not less than 4 complete anchoring points; each block of 8-18 layers is not less than 10, and each square meter is not less than 5 complete anchoring points; each plate is not less than 11 above 18 layers, and each square meter is not less than 6 complete anchoring points; the aperture is determined according to the diameter of the anchor, the wall-entering depth of the concrete wall is not less than 30 mm, and the wall-entering depth of the filling wall is not less than 60 mm; screwing the anchoring piece into the depth of not less than 40 mm;
step 06: polishing and repairing; the seam width of the EPS inorganic permeable insulation board exceeds 2mm, the EPS inorganic permeable insulation board with the corresponding thickness is used for filling, and the height of the abutted seam is larger than 1.5mm, and the EPS inorganic permeable insulation board is polished to be flat by using sand paper or a special polishing machine; the grinding operation is carried out after the EPS inorganic infiltration insulation board is pasted for 24 hours, so that disturbance to the pasting layer is avoided, and the bonding strength between the board and the base wall is weakened;
step 07: coating adhesive cement on the bottom layer; after the EPS inorganic infiltration insulation board is installed and checked to be qualified, plastering mortar is carried out, the plastering is divided into a bottom layer and a surface layer for two times, the bottom layer is plastered on the surface of the EPS inorganic infiltration insulation board, the thickness of a standard layer is not less than 6mm, and meanwhile, the turned-over gridding cloth is pressed into the plastering mortar;
step 08: paving and pasting a composite alkali-resistant glass fiber net; the paving method comprises the following steps:
(1) coating EPS inorganic infiltration insulation board overlay reinforcing mortar on the bottom layer, and uniformly coating the mortar on the EPS inorganic infiltration insulation board;
(2) the composite alkali-resistant glass fiber net is laid from top to bottom, is straightened and flattened along the vertical and horizontal directions, the bent surface faces inwards, and the composite alkali-resistant glass fiber net is flattened by a trowelling trowel from the middle to the upper side and the lower side so as to be tightly attached to the bottom layer EPS inorganic infiltration insulation board cover surface reinforcing mortar;
(3) the peripheries of the outer sides of the door and window openings are respectively added with a layer of 300mm 200mm 45-degree oblique composite alkali-resistant glass fiber net for reinforcement, and the glass fiber nets laid in large area are rotated along the door and window to be turned and pasted;
(4) applying glass fiber net and insulation board cover surface reinforcing mortar to the ends of the EPS inorganic infiltration insulation boards around the window, the doorway and other openings to wrap and level the EPS inorganic infiltration insulation boards;
(5) the left and right lapping widths of the mesh cloth are not less than 100mm, the upper and lower lapping widths are not less than 80mm, the original mortar shortage part is supplemented by polymer mortar at the local lapping part, the two-way angle winding from each side is needed at the male and female corners, and the mutual lapping widths are not less than 200 mm; after the glass fiber net is laid, checking the connection condition of the external corner net, smearing anti-crack mortar for the second time, and coating the glass fiber net in the anti-crack mortar;
step 09: coating EPS inorganic infiltration insulation board cover surface mortar;
step 10: and (5) patching and repairing the holes.
CN201810833126.5A 2018-07-26 2018-07-26 Construction method of EPS inorganic infiltration insulation board Active CN108915107B (en)

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CN110424559A (en) * 2019-07-31 2019-11-08 中国十七冶集团有限公司 The construction method of external wall insulation

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