Excellent wall masonry construction method?
Wrong way: the windowsill plate does not extend into the wall and forms a section with the masonry. This part is prone to splay cracks in the later stage, and there is hidden danger of cold joint leakage.
Good practice: After the masonry reaches the elevation of the window sill plate, the window sill plate shall be poured with formwork, the thickness shall not be less than 10cm, and it shall not be less than 20cm into the wall to avoid cracking and leakage in the later period.
Wrong way: the windowsill board is inverted, and the reserved mouth is used for later pouring, which is not easy to be dense and has hidden dangers of leakage.
Good practice: After the masonry reaches the elevation of the window sill plate, the window sill plate shall be poured with formwork, the thickness shall not be less than 10cm, and it shall not be less than 20cm into the wall to avoid cracking and leakage in the later period.
Wrong way: the structural column adopts a fixed template that penetrates the wall step by step, which destroys the stability of the masonry structure.
Good practice: set up a fixed template of opposite screw at the constructional column to avoid damaging the wall, and block the screw holes before plastering construction.
Wrong way: the inclined roof brick assembly is not dense, the inclined roof angle is too large, and the inclined roof of the long wall is assembled in the same direction, which is easy to crack in the later stage.
Good practice: sloping roof tiles should be assembled and compacted at an angle of 45-60 degrees. When the wall is long, it should be laid in two directions, and the finished triangular block should be placed in the middle.
Wrong way: shale hollow bricks are assembled directly, and the roots are not provided with solid plates or plain concrete anti-edges.
Good practice: at least 3 solid slabs should be built at the roots of hollow masonry and light filling materials, or concrete should be poured in wet areas.
Wrong way: before the second pouring of the bucket, the ground is not roughened, and the garbage in the bucket is not cleaned up, so it is easy to have cold joints after pouring.
Good practice: before pouring the inverted bucket, the ground should be roughened, wetted with water and fully vibrated to improve the molding quality of inverted bucket.
Wrong way: pipeline and equipotential damage concrete ridge in wet area, and there is potential leakage.
Better practice: Equipotential of hydropower pipeline and equipment is directly buried in concrete bucket to avoid secondary damage.
Wrong way: there is no horse tooth at the interface between constructional column and masonry, which reduces the seismic and crack resistance of constructional column.
Good practice: the structural column horse tooth fork retreats first, and advances and retreats through the skin. Rachel reinforcement of constructional column is set every 50cm, and the length of Rachel reinforcement entering masonry is 500 mm
Wrong way: the prefabricated lintel of the door has short overlapping length and insufficient stability.
Good practice: Due to the size limitation, if the overlapping length of the lintel is less than 20cm, the cast-in-place structure can be adopted to ensure the stability of the lintel.
Wrong way: the mortar joints between blocks are different in size, and the fullness is not up to the requirements, resulting in blind joints and straight joints, which may easily lead to wall hollowing in the later stage.
Better practice: strengthen the management of masonry construction, ensure that there are no blind joints and straight joints in mortar joints, and improve the quality of masonry.
Wrong way: precast blocks are not retained in the masonry hole as required, and the wall is easily cracked and damaged when the window sash is installed in the later period, and the stability of the window sash does not meet the requirements.
Good practice: when building a wall, set prefabricated blocks, with the distance between the upper and lower blocks not less than 20CM and the distance between prefabricated blocks not more than 60CM, so as to ensure that the window sash is installed and fixed in accordance with the design requirements.
Wrong way: the reserved hole larger than 30 is not provided with concrete lintels, and the stability of the reserved hole is insufficient, which may easily lead to wall cracking.
Good practice: openings larger than 30cm should be provided with concrete lintels.
Second, the excellent practice of improving the quality of masonry
100, 120 If there is a pipeline in the wall, a constructional column can be set, and the pipeline can be led out from the constructional column, so as to avoid damaging the building structure by slotting the wall in the later period.
The short stack masonry wall near the door is difficult to assemble, and it is easy to crack and deform in the later stage. In order to improve the stability of short pile, cast-in-place structure can be used instead.
Because shale sintered brick is brittle, slotting is easy to damage the wall, so special perforated shale brick is customized to avoid slotting in the later stage of the wall.
After the completion of masonry, mortar joint maintenance should be carried out regularly to avoid mortar joint cracking caused by shrinkage of cement mortar.
When adding sand, there should be an effective rain cover, and the water content of sand should be controlled, so as to avoid the high water content of sand and the cracking of plastering surface in the later period.
Set up centralized sand aerated processing zone on site to avoid dust pollution caused by ground cutting.
On-site sand aerated blocks are transported by special vehicles to avoid the damage of aerated blocks caused by secondary transportation on the construction site and reduce the material damage rate.
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