Insulation board construction technology
1 General
1.1 in order to implement the international energy policy and energy-saving design of civil construction standards (part of heating residential buildings), exterior insulation to ensure the quality of the project, the final version made a point of order.
1.2 point of order applicable to polystyrene foam for insulation materials, alkali-resistant glass fiber composite grid (thin) for polymer mortar layer and multi-storey tall buildings exterior insulation and finish the construction and acceptance.
1.3 to polystyrene foam board for insulation materials, alkali-resistant Fiberglass Mesh composite polymer cement mortar to the surface of the exterior insulation similar approach with reference to the implementation of this order.
1.4 In addition to supporting this point of order as specified in Materials, the fair use of the same performance but also through the Department or the provincial (city) class identified and proven its practical other supporting materials.
1.5 In addition to comply with this order, the still existing clearance should comply with international standards.
2 Construction Preparation
2.1 Materials
2.1.1, polystyrene foam board (hereinafter referred to as polystyrene board): should be consistent with the "polystyrene foam insulation" (GB10801-89) standards for flame-retardant first category ZR requirements. Thickness should be determined in accordance with energy-saving design requirements, generally 40-50mm.
Table 1 polystyrene board technical requirements
Apparent density (kg/m3) Thermal Conductivity (W / mk) water absorption% (v / v) oxygen index (%) thickness deviation (mm)
18-22 ≤ 0.041 ≤ 6 ≥ 30 ± 2
2.1.2, alkali-resistant glass fiber coated grid (hereinafter referred to grid):
Table 2 alkali-resistant glass fiber coating performance grid
Project name mesh size (mm) as to the strength (N) zonal strength (N) surface density (g / ㎡)
Net standard 5.0x5.0> 1300> 900 160 ± 10
Strengthening Net 5.5x5.5> 2200> 2500 500 ± 10
2.1.3, bonding agents and protective layer of mortar.
Table 3 bonding agents and protective layer mortar
Bond strength (MPa) and mortar board 14d> 1.0
With polystyrene board 14d> 0.1 (or polystyrene plate damage)
Impermeability 1.0Mpa, 6h without leakage
150mmx300mm early crack resistance of cement mortar Asbestos board clean 3mm into 30 ℃, 3m / s wind blowing 6h without cracks
Antifreeze performance (-25 ± 2 ℃ 18h, 20 ± 2 ℃ 6h) for one cycle of 40 cycle strength loss <15%
Compressive strength (28d) MPa> 15
Flexural strength (28d) MPa> 5
Polystyrene board used for bonding of the "bonding mortar" and the protective layer of "mortar crack" are langfang Xingda Ltd. developed a new type thermal insulation material and the production of adhesive for the base material, with its dedicated powder, sand preparation formed.
2.1.4 Other:
Fixed pieces of machinery used-ф10 ㎜ ㎜ Ф8 bulging Cypriot polyethylene, galvanized wood screws, the length determined in accordance with design requirements; may also have recourse to the performance of reliable fixed pieces of nylon tied bulging.
2.2 Tools
The silk cuts electric cutting devices,Hand-saw , wallpaper knife, screwdriver, scissors, a broom, wire brush,Heavy line surgery, brown brush, rough sandpaper, electric mixer, impact drill, trowel, sub-ballast, sub-sip Kok Yin and Yang, occasional line board , 2m such as by foot.
2.3 Construction Conditions
2.3.1, the external walls and the outer door window completed the construction and acceptance, based noodle achieve "construction Quality Inspection and Evaluation Standards" (GBJ301-88) in Chapter V Section III "Concrete works" on a large-scale multi-storey or the sixth section of chapter "bricklayer works" wall of water requirements.
2.3.2, on the external walls of the ladder, power supply, into the television households hole and embedded parts should be installed well in advance, air-conditioning hole reserved.
2.3.3, operating locations and bases in ambient temperature the temperature of not less than 5 ℃, wind less than 5. Rainy prohibit construction.