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    Home > Coatings News > Paints and Coatings Market > Talk about the application of waterproofing technology in high-rise housing

    Talk about the application of waterproofing technology in high-rise housing

    • Last Update: 2020-11-24
    • Source: Internet
    • Author: User
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    Abstract:
    this paper introduces waterproof technology, waterproof material development, reflects the importance of waterproof technology in high-rise residential application, can improve the waterproof performance of residential, improve people's living environment.
    keywords: waterproofing; buildings; high-rise residential; coiled materials; construction
    1, outline
    1.1 basic principles of waterproofing high-rise residential
    the overall deformation of high-rise housing is one of the main causes of cracks and seepage in high-rise housing. In addition, the presence of small gaps in building materials can also allow water to pass through, and then penetrate into the interior or other parts, water pressure is an important factor affecting this kind of imagination
    China
    . Therefore, the waterproofing of high-rise housing is generally designed according to the following principles:
    (1) to effectively control the deformation of buildings, such as heat expansion and cold contraction, uneven subsidence, etc. , in advance to take measures to prevent sites that may be deformed. Structural measures to limit the size of deformed stresses to prevent disorderly cracking of roofs can be taken to reserve compartment seams in rigid materials used on roofs.
    (2) must be in the easy to accumulate water parts, the establishment of dredging measures, is the timely discharge of water, not because of a large amount of water caused leakage. It is possible to establish the slope of the organizational roof to draw the accumulated water out of the water discharge pipe in time for timely discharge.
    (3) the use of rigid materials on important parts of the water - resistant materials and flexible materials of water repugnence. Structural measures are used to ensure that water is not soaked inside.
    1.2 Type of building waterproof structure
    1.2.1 construction waterproofing
    construction waterproofing is a reasonable improvement of the building structure node design and reasonable processing, in order to achieve waterproofing effect.
    1.2.2 material waterproof
    material waterproof refers to the selection of waterproof material itself has a good waterproof performance, through reasonable design and construction, in order to achieve waterproof effect.
    (1) rigid waterproof
    with fine stone concrete, waterproof mortar and other rigid materials as a waterproof layer waterproof structure called rigid waterproof.
    (2) flexible waterproof
    glued to the base, with flexible coil bonding formed by the construction method called flexible waterproof method.
    (3) coating waterproof
    polymer waterproof material has a strong bonding force and plasticity, it is directly painted on the grass is, forming a thick waterproof film, to form waterproof capacity. Polymer waterproof materials mainly include emulsified asphalt, fluorine rubber, acrylic resin and so on.
    2, roof waterproof
    2.1 flexible waterproof roof
    flexible waterproof roof is called flexible waterproof roof is used to waterproof the coil is used to connect with each other with glue material glued to the grass surface, with good flexibility, can adapt to the deformation of the roof.
    2.1.1 Basic structure level
    flexible waterproof roof basic construction level.
    (1) looking for a flat layer
    linoleum waterproof layer should be selected to lay on a more flat and holistic grass, usually should be in the structure layer or insulation layer to do 15-30mm thick 1:3 cement mortar to find a flat layer.
    (2) to the
    heat asphalt for linoleum and looking for a layer of cement mortar between the binding layer. In order to make the first layer of hot asphalt can be very good generally brush a layer of cold bottom oil, so that hot asphalt and find a flat layer can be a good combination. The cold - bottom diluted leaching solution is the cold - bottom oil. Can bond well with asphalt. Cold bottom oil can be very good seepage cement mortar, the first layer of linoleum will be firmly pasted fixed to the grass-roots level.
    (3) waterproof layer
    asphalt and linoleum layer alternately bonded to form the linoleum waterproof layer of the roof, because the linoleum is pasted on the base, the upper bonding protective layer, and the asphalt alternate fit will form a layer of felt two layers of oil or two layers of felt three layers of oil.
    (4) protective layer
    linoleum waterproof layer aging is generally due to exposure to air by the sun, oxygen, temperature and other effects. It can be re-linoleum surface to set up a protective layer to prevent the aging of waterproof layer, extend the life. Commonly known as the protective layer of mung bean sand is in the last layer of asphalt glue while hot glue glue on a layer of 3-6mm of prismless small stone, this practice is more economical and convenient, has a certain effect. When used as a roof 30-40mm thick fine stone concrete poured on the waterproof layer, can also use 20mm thick l:3 cement mortar to paste the floor tiles or concrete prefabriced slabs, etc. , so as to protect the role of waterproof layer, can also provide a surface layer for the upper house.
    2.1.2 eaves and water detail structure
    linoleum waterproof roof eaves generally include the daughter wall external drainage, daughter wall internal drainage and free water, eaves ditch, daughter wall eaves and other forms. The economic head treatment of linoleum at the stormwater mouth at the eaves is the key part of tectonic treatment.
    the water-resistant structure where the roof is waterproof and the vertical wall are intersected is called flood water. There are three things worth noting about the vertical wall of the linoleum waterproof roof: the first is made of mortar where the roof and the wall meet, so as to avoid the right-angle twists and turns of linoleum: the second linoleum is needed for vertical walls. The use of cement mortar polish plus cold bottom oil: the third in the wall needs to turn 250mm height must have waterproof linoleum, with a layer of dry roll material placed below, waterproof linoleum last head work must be done.
    2.2 rigid waterproof roof
    waterproof method made of rigid materials such as dense concrete or waterproof mortar is called rigid waterproof roofing. This type is a bit of a simple and affordable construction. However, the construction technology level of this method is relatively high, and the waterproof layer is more sensitive to the deformation of the building structure, easy to appear cracks leading to leakage.
    Rigid waterproof layer roof structure is generally (bottom-up) is divided into structural layer and thermal insulation layer, rigid waterproof layer, protective layer, looking for strat layer, isolation layer, wherein the structure layer, insulation layer and find flat layer and flexible waterproof roof corresponding structure is the same.
    (1) isolation layer
    isolation layer is used between the rigid waterproof layer and the structural layer, so that the upper and lower parts are separated, so that the rigid water layer is not affected by the deformation of the roof structure. Waste oil, asphalt, linoleum, plastic sheeting, etc. can be used as an isolation layer. If there is a insulation layer or when using insulation to find slope. these can be used as isolation layers.
    (2) fine stone concrete dense waterproof layer.
    requires concrete to have a strength rating of not less than C20, thickness between 40-60mm, and a two-way wire mesh in the upper part of it to improve the crack resistance of rigid waterproof layers.
    the outstanding problem of fine stone concrete roof is that the waterproof layer construction is easy to appear roof cracks, so as to leak, of which there are many reasons. There are four main reasons:
    first, fine stone concrete will be hot and cold shrink in the temperature difference changes greatly

    (3) floor waterproof
    in the toilet, kitchen, shower room and other frequent water room, the ground will be prone to water accumulation, so should do a good job of waterproof floor. The waterproof measures of the floor mainly include the drainage of the floor and the waterproofing of the floor. The first is floor drainage. To prevent overflow of water from the floor of the water room due to water accumulation. The floor of the water room should be 20-30mm lower than the floor of the adjacent room or aisle, and the threshold can also be used to block water. The usual practice for floor drainage is to set a drainage slope of 1% to 5% and configure ground leakage; Now pouring reinforced concrete slabs is a common practice in water rooms. When the room has a higher water requirement. There is also a need to set up a waterproof layer on the reinforced concrete slab, in order to prevent water from entering the wall around the room, the waterproof layer should be turned up up the corner of the wall into a flood of water. The height is generally 150-200mm above the ground.
    3, the basement waterproof
    when the basement floor is below the highest water level in the basement, the water will soak the basement wall and floor, this time the basement wall will be subjected to pressure from the groundwater side, the bottom plate will be subject to buoyant force from groundwater, water with these pressures will have a strong penetration capacity, so will cause the basement leakage, affecting the normal use of the basement.
    Roll waterproof
    In today's engineering, coil waterproof layer usually uses polymer-modified asphalt waterproof material or synthetic polymer waterproof material bonded with the corresponding bonding material to form a waterproof layer.
    4, conclusion
    With the continuous development of waterproof technology, high-rise housing gradually applied the most advanced waterproof technology, so that the quality of housing has been continuously improved, so that the residents of high-rise housing has more convenience, improve the quality of people's housing, I believe that with the development of science, social progress, I believe that people's living standards will be higher and higher, the living environment will be better and better.
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