The construction technology of the joint, the construction process of the roofing asphalt joint?

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1. Grassroots cleanup.

Before construction, it is necessary to use brushes, brushes, and oil shovels to clean the mortar, cement powder and floating ash on the concrete surface to ensure that the entire surface is clean and tidy.

2. Apply cold base oil.

After the basic sanitation is cleaned, according to the steps of construction, use props to brush and apply easy-to-cool base oil. Then wait for it to dry and get the acceptance of the supervision unit, and then apply the second cold base oil construction.

3. Paint with asphalt cement coating.

After the cold bottom oil is dry, you can apply the asphalt cement coating on the construction surface. During construction, a professional master is responsible for ensuring that the entire construction surface is painted and there will be no omissions.

4. Paint waterproof materials.

After the asphalt cement coating is completed, contact the supervisor for acceptance. When the test is qualified, the construction of waterproof coating begins, and the asphalt cement is generally used here. Asphalt cement is the appearance of black ointment, commonly used in cement foundation buildings, basement waterproof and anti-corrosion projects, civil building waterproofing, its low quality, and has excellent waterproof performance, so it has been recognized by most people.

5. Maintenance. After the roofing asphalt construction is processed, the necessary maintenance work needs to be done, and the process is recorded by the maintenance personnel. If a problem is found, deal with it in time to ensure normal use in the later stage.

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Roofing asphalt waterproofing is generally constructed using the hot melt method. The heating coil should be uniform, until the hot melt layer appears black luster, shiny to a slight microbubble, not excessive heating or burning through the coil, the coil should be rolled immediately after hot melting, and the air under the coil should be excluded when rolling, so that it is flat and wrinkle-free, and firmly bonded with rollers. The lap joint should be heated by a hot air welding gun, and the joint part must overflow with hot-melt modified asphalt glue, and then scrape the seal and paste firmly.

Before filling the joint, first clean the joint, and clean out the soil and debris in the joint. Clean the seams with a special brush or air gun or sprayer, and no miscellaneous soil or debris shall be left. Asphalt grouting until smooth and full.

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The key points of the construction of the pro-construction joints are as follows: the position of the construction joints should be set in the parts of the structure that are less shear and convenient for construction, and should meet the following requirements: horizontal joints should be left for columns, and vertical joints should be left for beams, slabs and walls.

1) The construction joint should be left on the top surface of the foundation, below the corbel of the beam or crane beam, above the crane beam, and below the column cap of the beamless floor slab. (2) The construction joint of the large cross-sectional beam connected with the floor slab as a whole should be left at 20mm and 30mm below the bottom surface of the slab. When there is a beam bracket under the slab, it is left in the lower part of the beam bracket.

3) For the one-way plate with a length-to-width ratio greater than two to one, the construction joint should be left in any position parallel to the short side of the board, and the construction joint should be left vertically and cannot be made into an oblique shelf. (4) The floor slab with the main and secondary beams should be poured in the direction of the secondary beam, and the construction joint should be left in the range of 1 3 in the middle of the secondary beam span. (5) the construction joint on the wall should be left in the range of the door opening lintel span 1 3, and can also be left at the junction of the vertical and horizontal walls.

6) The construction joints of the wheels on the stairs should be left in the 1 3 places of the tread board. The concrete of the staircase should be poured continuously. If it is a multi-storey staircase, and the upper floor is a cast-in-place floor slab and has not been poured, the construction joint can be retained; It should be left in the middle of the staircase 1 3 parts, but it should be noted that the joint surface should be diagonally vertical and straight in the direction of the stair axis.

The reason for the dispute in the construction is that the old specification stipulates that the staircase construction joint must be left in the middle 1 3 section, and the traditional construction is left in the upper and lower 3 steps, and when it is left in the middle of the staircase, theoretically the shear force is smaller, but the quality of the construction joint is not well controlled during construction, and it is easy to produce the short-term "cantilever" of the poured part when the secondary formwork is supported, which is not conducive to the quality control of the component. (7) The construction joints of the pool wall should be left on the vertical wall 200mm 500mm higher than the surface of the bottom plate. (8) The position of the construction joints of two-way stressed floor slabs, large-volume concrete, arches, shells, silos, equipment foundations, multi-layer rigid frames and other complex structures should be set according to the design requirements.

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Asphalt roofing tile construction technology base treatment Detail and node treatment Linoleum tile laying Inspection and cleaning of base treatment: 1. Whether it is a wood board base or a cement mortar leveling layer, the base should be firm and flat, checked with a 2m ruler, and the maximum sail gap should not be greater than 5mm, and the eye gap should be gentle. Detail & Node Processing:

1. At the yin corner formed by the gable, parapet and chimney protruding from the roof, before the nailing of the colored asphalt linoleum tile, the waterproof membrane needs to be laid on both sides of the yin corner, and the width of each side is not less than 250mm. Linoleum tile laying: 1. In order to ensure that the product is laid neatly and meets the requirements, the line should be played on the paved surface before laying, and the center line in the vertical direction is perpendicular to the ridge and is in the center of the roof

After the construction is completed, it is necessary to focus on the details and nodes, whether they are focused on treatment, and solve the problems in time. The garbage on the construction surface should be cleaned and cleaned after the completion of the work.

If there is no gap in the tile you want to paste, you must first understand the joint, so how to hook the tile? Next, I will tell you the construction steps and construction skills of ceramic tile joints.

First, the construction steps of ceramic tile joints:

1. Preparation of hook and seam tools.

Before tile grouting, you need to prepare the tools for applying rock trapping. General construction tools include caulking guns, pliers, paper cutters, waste newspapers, and rags.

2. Grout operation steps.

Remove the slurry discharging nozzle, remove the scraper, clamp off the material head with pliers, then install the discharging nozzle, and use a paper cutter to cut the discharging nozzle into a 45-degree slope angle along the thick ribs, and the width of the discharging nozzle should be basically consistent with the seam width, so that the discharging nozzle can be completely immersed in the seam.

3. Construction methods.

Load the grout into the glue gun, slowly and forcefully apply the material evenly in the seam, and use a scraper to scrape the material in the joint as soon as possible to achieve a smooth and bright surface.

4. Spill treatment.

In the process of scraping, if there is material overflow outside the joint, ignore it first, and gently scoop up the overflow material with a paper cutter 24 hours after the construction is completed.

Use a rag dipped in a little acetone or solvent oil to remove any grout that has accidentally dripped on the floor. Second, tile grout skills:

Skill 1: Surface treatment.

Clean the tile crevices before using tile grout to remove all dust, oil and other contaminants. At the same time, it is also necessary to remove loose tile adhesive between the gaps in the tiles.

Tip 2: Stir.

Mechanical mixing is carried out using a low-speed electric drill with suitable mixing blades. Add the powder to an appropriate amount of water and start stirring until it is homogeneous and lumpy. The mixture is allowed to stand for 5minStir slightly and use.

Skill 3: Construction.

Use a rubber grouting knife or a suitable scraper. Fill the stirred tile grout into the tile gap and fill the tile grout diagonally or in a circular motion. Try not to leave too much grout on the tile surface, and clean the tile surface regularly with a damp sponge or damp cloth before the material sets.

Remove any imperfections found as soon as possible, and repair them as soon as possible. Tip 4: Cleaning.

Clean the tile surface with a slightly damp sponge, rubbed topically with a clean, damp cloth, and before the caulk film dries. The tool should be rinsed with clean water immediately after use. After the tile grout is cured at the initial dry, wipe off the tile grout that has been powdered on the surface with a dry cloth, or use water for final cleaning.

1. First of all, the bought grout is mixed and stirred according to the ratio of powder and water 4:1, and it is generally necessary to stir twice. Stir it into a paste for the first time, let it sit for ten minutes, and then stir it a second time.

2. Clean the surface of the tiles, carefully clean the tiles on the paved ground or wall, and there can be no sundries on the surface.

3. Load the stirred grout into the special glue gun, and then squeeze the grout in the glue gun into the gap along the gap of the tile. Once filled, the grout in the gap needs to be scraped flat with a scraper. Because the coagulation speed of the grout is relatively fast, it is not easy to clean up later if it is not scraped quickly.

4. After the grout is dried, we can use a damp rag to do further cleaning, wipe the surface of the masonry, and remove the excess grout.