Common sense of coating: prevention measures for exterior wall waterproofing

Core tip: external wall waterproofing is a divisional waterproofing project to ensure that the structure of buildings (structures) is not affected by water and the internal space is not damaged by water The external wall waterproof engineering plays an important role in the whole construction project The external wall waterproof project involves many external wall structures such as basement external wall and housing external wall of buildings (structures) Its function is to prevent the leakage of rainwater and domestic water and the erosion of groundwater within the design durability period of buildings or structures, ensure that the building structure and internal space are not polluted, and provide a comfortable and safe living environment for people External wall waterproofing is often set Paint knowledge how about Akzo Nobel Powder Coating Recommended introduction: powder coating is a kind of coating with different form from general coating, which is in powder form It is a new type of coating, because of its own advantages and more and more known by people Let's introduce Akzo Nobel Powder coating Akzo Nobel Powder coating is a cost-effective coating solution, which can be applied to different kinds of products After the treatment of static electricity and fire baking, a tough and durable coating surface will be formed, with the least impact on the environment Since the introduction of this technology, powder coating has been able to continue to maintain the Paint Home News: external wall waterproofing is a divisional waterproofing project to ensure that the structure of buildings (structures) is not affected by water and the internal space is not damaged by water The external wall waterproof engineering plays an important role in the whole construction project The external wall waterproof project involves many external wall structures such as basement external wall and housing external wall of buildings (structures) Its function is to prevent the leakage of rainwater and domestic water and the erosion of groundwater within the design durability period of buildings or structures, ensure that the building structure and internal space are not polluted, and provide a comfortable and safe living environment for people External wall waterproofing is often the weak link in the design and construction Because it is not listed as a separate "waterproofing process", it is often ignored by people However, in reality, the phenomenon of external wall seepage is common, and it is often difficult to deal with the leakage once it forms The main preventive measures: (1) in the structural design, the influence factors such as foundation and lateral displacement should be fully considered, and the wall structure should be reasonably selected to prevent unreasonable structural design, excessive local deformation and structural cracks In the brick concrete structure, pay special attention to prevent the temperature deformation crack of the top brick exterior wall The main measures are: adding structural columns and connecting them with the roof as a whole to restrain the walls between structural columns; making cornices around the roof; setting sliding measures at the supports of roof and external wall (GZ is added on the first and second floors of the top of the frame structure to restrain the walls between windows and GZ) (2) in the architectural design, steel plate mesh shall be nailed between the side of the frame beam bottom column (or shear wall) and the brick filled wall; tie bars shall be set between the side of the column (or shear wall) and the brick filled wall The external wall windowsill should adopt the concrete integral windowsill board; when the hollow block is adopted, the side of the window opening should be built with solid block or filled with fine stone concrete The external wall of high-rise building should not be tiled or wet hung with construction stone A layer of waterproof putty can be applied first when the external wall is coated (3) Attention shall be paid in the construction: 1 > the infilled wall at the bottom of the frame shall not be built to the top at one time (daily masonry height ≤ 1.8m); the 120mm brick at the top shall be laid obliquely after 15d 2> The external filling wall should not be painted until at least one month after masonry to prevent cracks caused by the relative deformation between the external wall and the frame 3> The mortar joint between the external filler wall and the beam bottom and the column side must be tightly filled; these parts are often caused by careless masonry construction and empty mortar joint, which leads to cracks and even water leakage in the external wall painting 4> application of polymer sealing paste and polyethylene foam plastic liner in the construction of high rise frame external wall panels or fabricated wall panels 5> Before the external wall is painted, the concrete base shall be painted with interface agent to prevent the cement mortar surface from hollowing After painting, it shall be carefully maintained 6> Waterproof mortar should be used as base for external wall painting Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,