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    Home > Coatings News > Paints and Coatings Market > Waterproof plug leak do a good job, 15 parts are the key

    Waterproof plug leak do a good job, 15 parts are the key

    • Last Update: 2020-11-19
    • Source: Internet
    • Author: User
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    Waterproof leakage is done well, 15 parts are the key
    1 yin and yang corner
    roof plane and facade intersection, dark room bottom and wall inside the internal affairs corner, eaves and tiangou junction, Tiangou corner, two facade corners constitute yin and yang corner. These parts often due to concrete, sand dry shrinkage and temperature difference deformation attack stress concentrated lead to cracking, some crack width can be reduced to 5mm. The strengthening layer of yin and yang angle can be strengthened by using coil strip, that is, a layer of 100 to 150 mm wide coil strip at the intersection
    the
    .
    But because the coil is hard and strong, it is difficult to lay and lay at the intersection angle, repeatedly using paint and strengthening the tire body cloth as a strengthening layer, that is, at the intersection to apply 150 to 200mm wide, 1 to 2mm thick tire body coating. When the tire body is paved, avoid tightening, should be scrapped without wrinkles. The effect is better when the coating is strengthened at the intersection of 3 sides.
    2 plate end seam
    the roof, floor support end of the board seam called board end seam. Whether it is pouring the same assembly construction plate, due to the load effect of the plate end negative bending moment, plate surface scratching and plate end upper cracking, coupled with concrete, sand dry shrinkage and temperature difference deformation, will make the plate end attack larger plate end cracking.
    Collaged board plate end cracks double distinct, according to the calculation, 6m large house panel board end will attack 12mm domination of the cracks, field investigation 5 to 8mm prefabribriated large house panel plate end cracks are common. The current pouring construction plate due to the continuous rebar, the cracks are much smaller, but the ordinary two or three years later can create visible plate end cracks. Therefore, the strengthening layer of the plate end seam should have a strong response to the grass-roots deformation of the wrist, can be disposed of by the following methods: 01,
    using coils as a strengthening layer should take the method of empty paving. Can be used 200 to 300mm wide, 1.2mm thick polymer coil or 3mm thick modified asphalt coil one-way point stick to the end of the plate, or with pressure-sensitive binder, after a large area of waterproof layer.02,
    the use of tire body waterproof coating as a strengthening layer, coating can be used and large areas of waterproof layer compatible polymer coating or polymer modified asphalt coating. The practice is, at the end of the plate seam 200 to 300mm wide category first brush isolation layer 150 to 250mm (such as lime water, white wax or pressure-sensitive anti-cracking adhesive), monotonous after layer-by-layer coating waterproof paint, laying tire body, ordinary one cloth three or two cloth four coating, and then the construction of a large area waterproof layer.03,
    another practice is to reserve grooves in the plate seams at the end of the board or to find a flat layer, first fill in the sealing information and then stop disposal according to the above two practices.
    3 Roof gap, eaves
    days ditch, eaves and eaves at more than simple deformation, and by the rain seriously washed, ditches are also repeatedly due to long-term water accumulation, dry and wet melon generation and waterproof composition of serious crushing. The waterproof layer of many projects, starting with the waterproof layer in the ditch or along the ditch, is effective early and produces leakage, so it should be strengthened in these areas. Due to the variable surface of the trench, the construction work surface is small, the use of coils is very disadvantageous, at this time many designs to coat the film waterproof to match, this authentic is accurate.
    About the tiangou, eaves and water drop at the ordinary coating film strengthening, there is a cloth three coating and two cloth four coating practices, that is, at the intersection of the tiangou about the entire trench and eaves first coating, and then lay to strengthen the tire body, and then coating 1 to 2mm thick;
    4 Water drop, ground leakage, water holes
    these parts are at the junction of two materials, due to concrete and mortar dry shrink and the expansion of the two materials, will make the water drop, ground leakage, water holes in the region burst. In addition, it is also the rainwater concentration and simple water accumulation part, and the location of the work surface is small, the construction process is many, the construction quality is difficult to wrap pipe. According to the node anti-quasi-rope, should stop the multi-channel clothing and node seal disposal, in order to be in the water drop, funnel and casing area, reserved 10mm×15mm groove, embedded with high-efficiency sealant, and then for coating film strengthening layer, one cloth three or two cloth four coating (thickness 1 to 2mm), and then for coating waterproof layer.
    5 Waterproof layer head
    flexible waterproof layer end (roll and coating film) end, due to the contraction of the waterproof layer, and then by the rain breeze action, early edge, de-layering, before the large waterproof layer leakage. Therefore, the standard rules in the coil head must be pressed with a pressure bar nail fixed, and then sealed with sealing information, in the brick water reserved groove, the head pressed into the groove, and then covered with cement mortar;
    6 Pipes and pre-buried parts that pass through the waterproof layer
    due to differences in the pipe or pre-buried parts and the swelling coefficient of the concrete around them, water seepage can be expected to crack around the pipes and pre-buried parts. Therefore, when smearing the flat layer, the root of the pipe should override the roof and add two cloths and five coating film additional layers. The darkroom and pond should be left in a groove and sealed with sealant around the pipe through the waterproof layer, with 1 ring of water in the middle of the pipe to shrink the rubber strip.
    7 Roofing out of import
    roof out of import due to frequent use will form early crushing, out of the import waterproof layer head should be disposed of properly, except, should be appropriate for strengthening the layer, and require the appearance of waterproof layer, such as cement mortar waterproof layer.
    8 pressure top
    pressure roof is located at the highest point of the roof, directly exposed to natural conditions, affected by the weather, affected by the temperature difference of the entire vertical wall, structural force deformation and wall concrete and sand dry shrink deformation is also very large, so even if the reinforced concrete pressure roof, its horizontal cracks are inevitable. More in 3 to 5 years of cracks will be clearly unfolded, with reinforced concrete pressure top, within 5 to 8m will have a crack unfolded, not with reinforced concrete in 1m domination there is a crack.
    rain bursts into the wall, bypassing the waterproof layer to leak into the room, so that the pressure top must be used as a flexible coating layer. Ordinary is made under the pressure top, assuming improper material selection, may form the pressure top and daughter wall layering, currently only polymer cement-based coating and polymer cement mortar is used here waterproof;
    9 subliter slit
    in order to avoid rigid waterproof layer or find flat layer dry shrinkage and temperature difference to form cracking and open the initial configuration of the split seam, the split seam has a full section, half-section (to be held), buried plastic mold stripe, etc. , the role is to focus the deformation of the block body in the seam. The size of the seam at any time the light repeatedly changes, so it is necessary to insert high-effect elastic sealing data in the seam, the appearance is then covered with paint and tire body.
    10 pile head
    when the water is darkly waterproof for flexible water-resistant and has pile rooting works, flexible waterproof to the pile position can only be disconnected, the pile head will constitute a seepage channel. Pile concrete poured to the pile head, sand more, porous holes rich, when chisel pile head, concrete by vibration, fine cracks, because the pile head is a channel of dark chamber leakage, so it is necessary to stop waterproofing and sealing disposal according to Figure 1.
    11 rear pouring belt
    in order to overcome the building temperature difference scaling or subside caused the building to crack, configure deformation seams; When the construction origin and technical request can not be dissatisfied with the construction request of the back pouring belt, the back pouring belt and the original concrete appear shrinking cracks and cause leakage. Therefore, after the construction of the pouring belt, on both sides of the rear seam to stop strengthening waterproof disposal. It is common practice to strengthen the disposal of the surface of the water or to bury the water belt in the middle of the seam or to shrink the rubber water bar in case of water.
    12 ditches, pits and indoor kitchen baths
    are the most prone to cracking at the intersection of the ditches. At the intersection of air and ditches and pits, the grooves where there is a cover often produce quality titles due to their complex shape, so they should be disposed of in enhanced layers in these areas. Ordinary strengthening layer for a cloth three coating, because of the room edge trench and pit grass-roots shape complex, should use paint waterproof, not suitable for rolling material.
    13 door and window frame area and waist line
    Therefore, to stop the sealing data waterproof strengthening disposal, that is, in the door and window frame and wall between the grooves, filled with high elastic sealant, waist line at the intersection should be a larger fillet and out of the slope, brush transparent waterproof glue to strengthen.
    14 Roofing equipment base
    when installing equipment on the roof waterproof layer, the waterproof layer should be isolated layer after pouring fine concrete waterproof layer, depending on the quality of the equipment determined its thickness, but should not be less than 30mm.
    15 construction concrete cracking
    structure cracking is currently both popular and difficult to deal with punishment of a title. Because of the ratio, water-ash ratio, material, vibration, maintenance, templates, sky color and other components, so that concrete before the waterproof layer construction cracking. If the waterproof layer is cracked after construction, it will be more difficult to dispose of. Waterproof layer before the construction of cracking, perhaps in the cracking place to brush 10 to 20mm anti-cracking glue (pressure-sensitive glue), after the construction of waterproof layer, such as encountering a large crack when yizi line grout plug leakage disposal; Concrete cracks with a width greater than 0.2mm may tear the waterproof layer apart, and it is difficult to expect the location of the crack, so if the phenomenon of the waterproof layer is cracked, it is advisable to use anti-cracking glue on both sides of the crack 50 to 100mm category to stop disposal and then repair the waterproof layer intact.
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