It is strictly prohibited to mix water arbitrarily during construction; (2) the plastering mortar shall be plastered in layers, especially for high-rise buildings
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2
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3
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Face tiles can be inlaid with 1:1 cement fine mortar, or the construction method of ceramic tile back glue and cement mortar can be used to effectively prevent falling
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The joint form is concave joint, which is slightly 2-3mm lower than the face brick
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② For honeycomb repair (all honeycomb pitted surfaces found are small without deep holes), firstly chisel off the loose stone chips on the concrete surface and clean it
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Construction of waterproof leveling layer 1
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The internal corners are also sealed with weather resistant glue
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The joint sequence shall be carried out simultaneously horizontally and vertically to prevent excessive joints
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2
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If so, immediately repair it to be qualified, and then brush the leveling layer with pure water slurry (mixed with 107 glue) and roughen it
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Before inlaying face brick, check whether the leveling layer has hollowing, shell cracks and unevenness
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The formwork sawdust remaining in the laitance of the concrete wall and the exposed reinforcement and iron wire must be cleaned to facilitate the firm bonding between the plastering mortar and the base course
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Before plastering, the exterior wall surface at the junction of masonry part and concrete part shall be covered with 200mm wide 16# steel wire mesh and fixed to resist cracking caused by different expansion coefficients of different materials
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The screw hole on the concrete shear wall shall be chiseled into a bell mouth around, filled with expanded cement mortar, and then sealed with polymer waterproof slurry
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① For formwork expansion and repair, firstly chisel out and clean the protruding parts that do not meet the design and specification requirements, then wash the base course with steel wire brush or pressurized water, then level with 1:2 or 1:2.5 cement mortar, and finally spray water for curing for 14 days
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Before inlaying, the color of the face brick shall be uniform and the flat corner edge shall be selected
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The plastering of local external walls is thick, which requires layered plastering
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The downcomer clip drilling is inclined downward by 3-5 °, the nail sleeve expansion hose is embedded with epoxy resin, and the use of wooden wedge is strictly prohibited
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6, jing15 Road, Technology Development Zone Tel.: 0575-82738787 cooperation hotline: 13735321777 enterprise official website: www.yuyist.com.cn business philosophy: professional, attentive, honest and reliable waterproof coiled materials | waterproof coatings | plugging products | engineering construction.
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In order to prevent wall leakage caused by cracking of face brick and bonding layer, two horizontal dividing joints can be reserved above and below the side beam of each floor slab to separate the face brick bonding layer
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Therefore, it is necessary to prevent it in advance during the construction period
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There is a small amount of formwork expansion honeycomb and pitted surface in the repair of concrete exterior wall
Inspection and treatment of wall base surface 1
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If the thickness is too large, steel wire mesh shall be set at the layer; (3) polymer waterproof mortar can be used for batch mortar; (4) external wall plastering, scaffold tie bars, etc
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The face brick shall meet the product quality requirements
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After setting the slurry, it can be cut into reverse rubs with an iron trowel, and then brushed with a layer of plain cement slurry
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4
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2
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After pointing, check that there are no missing hooks or other defects, and wipe the surface of the face brick with cotton yarn
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Secondly, before repair, water and wash the dust on the concrete surface to be repaired to keep the base surface wet, then level it with 1:2 or 1:2.5 water mortar, and finally spray water for curing for 14 days
.
It is 100% effective【 Ingenuity waterproof · [Yuyi technology] technical article recommendation 01 ｜ floor + exterior wall + roof: a comprehensive interpretation of basement waterproof construction! 02 ｜ cement based permeable crystalline waterproof coating (with construction tutorial illustration) 03 ｜ detailed explanation of waterproof technology for pre paving of building cushion! 04 ｜ how to ensure the quality of waterproof engineering! Material is the foundation, design is the premise and construction is the key! 05 ｜ what are the bad habits during the construction of waterproof coating? 06 ｜ the place where the building is most prone to leakage! 07 ｜ building repair ｜ case analysis of roof expansion joint leakage repair 08 ｜ building repair ｜ 10 roofs and 9 leaks, Ultimate roof solution 09 ｜ building repair ｜ repair process of terrazzo floor in excellent historical buildings 10 ｜ building repair ｜ excellent historical building repair project sharing of Wukang building 11 ｜ building repair ｜ solution for water seepage repair of metal roof gutter 12 ｜ building repair ― self repair technology of concrete crack Zhejiang Yuyi Waterproof Technology Co., Ltd
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The 1:1 polymer waterproof mortar shall be used for the joint to reduce the brittleness of the cement mortar
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3
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The dividing joint shall be cleaned and filled with weather resistant glue before removing the external scaffold, and the glue surface shall be flat with the ceramic tile surface
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Generally, the width of the joint channel shall be about 8mm
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The masonry of external wall waterproof requires that the flash joint of external wall shall be avoided to be transparent during masonry, the mortar joint shall be uniform, the interface between wall and beam column shall be cleaned of waste slurry, the brick masonry shall be wet, the masonry wall shall not reach the top at one time, and shall be completed in two to three times to prevent mortar shrinkage and make the external wall fully sink
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The external wall leakage inspection measures adopt the continuous water spraying method, which can be used φ For the 20mm water pipe, 3kpa pressure water shall be used to continuously spray water on the top floor of the building for 6h, and observe whether there are water seepage traces around the inner wall and window edge
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In addition, the holes left on the external wall by the tie rod of the scaffold tower crane construction elevator shall be cleaned and fully cleaned with plain cement slurry, Then use dry and hard concrete to block each half in two times, first inside and then outside, and fully tamp and compact
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The external wall of the building falls off, turns and leaks, and the maintenance is very difficult and cumbersome
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Before plastering the waterproof leveling layer of exterior wall, pay attention to the wetting of the surface of masonry before plastering, and spray sufficient water
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Special attention shall be paid to that the water seepage of the external wall is repetitive and cannot be constructed at one time
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Construction of external wall face brick 1
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When plastering the leveling layer, attention shall be paid to ⑴ mortar shall be strictly measured according to the proportion, and the water cement ratio shall be controlled
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The uneven parts shall be leveled with 1:3 cement mortar
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In addition, pay attention to the flatness detection of wall, To prevent the batch of ash in the next process from being too thick or too thin
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The plastering thickness of each layer shall not exceed 2cm
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5
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The exterior wall of a building is like the face of a building, which intuitively reflects the construction quality of a building
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If it is too thick, it shall be leveled in layers, or hang reinforcement mesh, bonding cloth and other batch of ash
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According to the actual situation, the following methods are adopted to repair the concrete surface
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The face brick shall be immersed in the pool 1 to 2 hours in advance to dry the floating water on the surface
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shall be cut, and the bell mouth shall be plastered and flattened
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address: Shangyu Economic Zone, Hangzhou Bay, Zhejiang No
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Before inspecting and handling the waterproof wall holes of the external wall, the wall holes shall be inspected and blocked in the wall body
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After the face brick is pasted, the joint shall be pointed in time
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Finally, spray water for several days
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