The construction process and key points of the exterior wall polyphenylene granule outer thermal insulation mortar for building construction Guoqiang Construction Group Co., Ltd. Xu Chunlei Polyphenylene granules Exterior wall insulation is broken into 0.5~4 granules using waste polystyrene plastic processing, as a light set The material is used to prepare thermal insulation mortar, and the mortar is applied to the external wall of the building to achieve the thermal insulation and energy saving effects of the building. Base wall cleaning * Wall base interface Lapping * Hanging vertical, sets of squares, bomb control lines, punching bars * Wipe insulation slurry * Fixed square net * Scrape-resistant cracking mortar * Adhesive exterior wall tiles, joints or brush outer walls Coatings) 1. Primary treatment: Thoroughly remove surface ash, oil, mold release agents, empty drums, and weathering substances that affect wall surface construction. The reinforced concrete base wall should be fully coated with interface mortar, and the aerated concrete block is also coated with interface mortar, and then cast polyphenylene granule insulation slurry. 2. The interface between the wall and the base of the wall: The interface materials provided by the system are used on the surface of the concrete and masonry, and the mortar rolls, brushes and cylinders are adjusted according to the specified proportions. According to the insulation design thickness (different design thickness in different regions), the steel wire is fixed at the top corner of the top wall and suspended vertically. According to the vertical control line to do the vertical direction of the gray cake, and then according to the line between the two vertical direction gray cake, do the thickness of the wall insulation layer ash cake, the distance between each ash cake horizontal, vertical, oblique) does not exceed 2m . Gray cake can be used to do insulation paste, scrap polystyrene board can also be used to cut into small pieces of 5X5cm paste. Its quality requirements and methods are the same as those of ordinary exterior walls. 1. Wipe insulation slurry: Insulation slurry needs someone to use mechanical agitation according to the material mix ratio. The amount of water added can be adjusted according to the construction climate. The mixing time should not be less than 3 minutes. The prepared slurry must be completed within 4 hours and the floor ash must be reconstituted within 4 hours. Insulation slurry is forbidden to add water during construction. The insulation mortar needs to be layered and wiped. Each time the plaster thickness is about 20mm, the interval between layers of the insulation slurry should be more than 24 hours. 2. Fixed four-corner mesh: If the surface layer is veneer brick, the four-corner mesh material is usually galvanized steel wire mesh, and it is fixed by plastic expansion bolt; if the surface layer brush exterior wall coating is generally selected alkali-resistant glass fiber mesh, no plastic expansion bolt is needed to fix it. . Plastic bulging should not be less than 8 per square meter. The four corner nets shall not be overlapped within a range of 50cm at corners. The overlap width of other places shall be greater than or equal to 4cm. The length of each square net shall not be greater than 3 meters. 3. Scrape anti-crack mortar: The anti-crack mortar should be specially responsible for mixing according to the mix ratio, stirring with a mortar machine or agitator, prohibiting manual mixing, and forbid mixing water in the prepared anti-crack mortar. The cracked mortar must be used up within two hours. At the time of wiping, the upper bar must be leveled and the last available wooden trowel should be flattened until the required strength is reached. The construction of the anti-cracking mortar must go through the relevant party's acceptance of the ground. 4, paste the exterior wall paste tiles, staggering or brush exterior wall paint: The use of the system provided by the tile adhesive and adhesive powder construction. The construction method and requirements are the same as those of ordinary exterior wall veneers. It is worth noting that the use of tile adhesives to paste tiles has a certain degree of decline. 1. Requirements for main control project: The type, quality and performance of the materials used shall meet the requirements of the design and the current national standards; the insulation layer and the wall and each structural layer must be firmly bonded with no delamination, hollowing, cracks, and surface layers. There is no phenomenon such as chalking, delamination, explosion, etc.; the thickness of the insulation layer does not allow negative deviation. The joints are straight, straight and clear; the protection angles are in accordance with the construction regulations, and the holes, slots and boxes are in the correct position and size, and the back of the pipeline is flat; the laying method of the grids is correct, and the detailed treatment complies with the requirements of technical regulations. Permissible deviation items and inspection methods are implemented according to the “General Plastering Project†of “Code for Quality Acceptance of Building Decoration Engineering†(GB50210-2001). 3, construction quality inspection control requirements. The entry and acceptance of raw materials should pay attention to: the accuracy of the inspection amount; whether the packaging is in good condition; whether the material is consistent with the certificate, test report; whether the material is within the validity period; whether there is storage instructions. Grass-roots treatment requires that the walls be clean, free of dirt, oil-free, and loose. Insulation thickness and flatness control requirements: to achieve the design thickness, no empty drums, no cracking, no shedding, wall surface formation, square yin and yang. 4. Cracking mortar thickness and lap overlap control requirements for grids: The degree of flatness of the special insulation layer and the quality of the web shop are to ensure that the thickness of the insulation crack resistance mortar is controlled from 3 mm to 8 mm. Details of the control and inspection requirements: In the construction of the door and window openings to strengthen the side, window covers, protruding structural members such as four-corner paving, fixed quality control. Fourth, the construction of technical points. 1. Ingredients for the volume of the domestic mortar mixer, using insulation rubber powder and polystyrene particles of light aggregates according to the score with the packaging technology or insulating powder and polystyrene particles of light aggregate according to the ratio with a good combination of technology. No need to weigh when stirring, the stirring quality of the slurry is easy to control, avoiding the common problem that the thermal performance of the insulation layer is not stable and affect the insulation effect due to inaccurate on-site weighing. The use of machinery and tools for construction is simple, construction techniques are easy to master, and construction quality is easily controlled. 2. The plastic bulging bolts fixing the square nets must be fixed in the mortar joints on the masonry and shall be distributed in a plum shape. In this way, the four-corner net and the wall body can be firmly fixed, the surface of the net can be flattened, the thickness of the crack-resistance mortar can be reduced, and the cost can be saved. 3. The construction anti-cracking mortar should be smoothed with the wiper in hot weather. The time interval should not exceed 30 minutes. Do not use the trowel to smooth the water. Otherwise, it is easy to form a low-strength sandwich on the surface of the anti-crack mortar. 4. When constructing in places exposed to sunlight, cover measures are needed to prevent the water from dissipating too quickly, resulting in low surface strength.
Galvanized Steel Fence
Steel fence is also known as steel picket fence,
ornamental steel fence. The panels are manufactured using the
highest-strength steel pickets and rails, and are available in a wide
range of sizes and styles.
Material: Galvanized steel Q195 or Q235
Finish: galvanized and powder coated
Main market: America, Canada, Australia, Europe, etc
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