Before the construction of the elastomer modified bitumen waterproof membrane grade waterproof layer, the dust, sand, gravel, debris, oil and mortar protrusions on the base must be cleaned. Construction preparation. Construction tools for cleaning the waterproof base layer: shovel, broom, dust blower (or vacuum cleaner), hand hammer, steel chisel, rag, etc. Construction tools for coil paving: scissors, tape measure, spring box, roller brush, rubber roller, etc. The temperature during construction should be above 5℃, and it is not suitable for construction in a particularly humid and unventilated environment.
Lift the roll material (including the release paper) from one end, fold it in half along the length of the roll material, and gently cut the edge of the release paper with a paper knife. Take care not to scratch the roll material, and carefully tear the release paper from the back of the roll material. Open a short section of about 500mm long, and the two people work together to remove the release paper and align it with the reference line. First spread the half-length roll material in place, pull the peeled release paper evenly and forcefully back, slowly pull out the remaining half-length release paper, pay attention to the integrity of the pulled release paper when spreading If tearing is found, stop spreading immediately, clean up the torn release paper residue, and then continue spreading. Laying method: align the roll material to the reference line and spread it out in full.
Waterproof membrane m3jNciXgv
Elastomer modified bitumen waterproofing membrane grades People are increasingly aware of the importance of building waterproofing. There are only two products in building materials that require administrative approval: cement (related to the safety of the main structure of the building), and waterproof building materials (protecting the main structure of reinforced concrete from damage). As a concealed project, the importance of building waterproofing has not been realized in the past. The 4 trillion yuan investment has made waterproofing membranes widely used in highways, high-speed railways, airports, docks, landfills and other projects.
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When the slope is lt, when the slope is 3%, it is laid in the direction parallel to the roof ridge. When the slope is between 3% and 15%, it can be used perpendicular or parallel to the roof ridge. When it is greater than 15%, it should be laid perpendicular to the roof ridge. During hot-melt construction, aim the flame spray gun (blowtorch or electric heater) with the adjusted temperature at the interface of the waterproof coiled material and the base layer at a distance of about 150mm. At the same time, quickly bake the coiled material and the base layer. When there is turbulence, roll and paste immediately and randomly compact with rubber rollers to remove air. The leveling layer is the base layer on which the membrane waterproof layer is laid, which provides a smooth, dense, strong, and bondable structural foundation for the waterproof membrane. Therefore, the leveling layer of the rolled material should be solid, and there should be no protruding sharp corners and pits or sanding on the surface. When checking with a 2-meter-long ruler, the gap between the ruler and the surface of the leveling layer should not exceed 5mm , The gap is only allowed to change gently, and no more than one point per meter length. The corners formed by the adjacent surfaces of the leveling layer should be made into circular arcs or obtuse angles.
It has good tensile properties and large elongation, which can better meet the needs of base layer expansion or cracking deformation. Good high and low temperature resistance, low temperature can reach -40℃, high temperature can reach 160℃, and it can be used in harsh environments for a long time. Light weight, reducing roof load. Suitable for waterproof construction of building roofs and basements. The scope of products. Suitable for roofing, basement, indoor, municipal engineering and reservoir, swimming pool and subway tunnel waterproofing of industrial and civil buildings.
There are several reasons for roof leakage: materials accounted for 20%-22%, design accounted for 18%-26%, construction accounted for 45%-48%, and management and maintenance accounted for 6%-15%. At present, there are many new materials for roof waterproofing, but the membrane waterproof layer still occupies an important position, so this article focuses on the construction of roof membrane waterproofing. Related reading: Roofing waterproof construction requirements. Technical preparations before construction. Before the construction of the roofing project, the construction unit shall organize the technical management personnel to review the roofing project drawings. According to statistics, master the detailed structure and related technical requirements in the construction drawings, and compile the construction plan or technical measures of the roofing project according to the actual situation of the project. The base layer produces temperature shrinkage deformation: the quality of the coil is inferior, and the aging and brittleness. Crane vibration and uneven settlement of buildings. Asphalt rubber has poor toughness and high cooking temperature. Prevention measures. Lay a layer of coiled material as a buffer layer at the joints of the prefabricated slabs, make a mortar leveling layer, leave a separation seam, strictly control the raw materials and paving quality, improve the ratio of asphalt glue, take measures to control heat resistance and improve toughness, To prevent aging, strictly operating procedures, and use oil spreading method to paste.
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