Construction method for split bricks of complex joint outer wall

Abstract

The invention discloses a construction method for split bricks of an outer wall with complex joints. The construction method comprises the following steps that firstly, a cement mortar bottom and cement mortar powder are used for painting an outer wall surface layer; 2, outer wall surface split bricks are matched according to the design, and special pasting mortar is used for pasting; thirdly, jointing is conducted through a semi-dry powder or shoving process, and the minimum cutting size of the internal corner of the external wall face brick needs to be larger than or equal to 60 mm; step 4, after the wall surface is dried, performing color tracing by using an exterior wall coating, and brushing a water repellent on the exterior wall face brick; compared with the prior art, the method has the advantages that different construction modes are adopted for different complex joints, the construction quality and effect of the split bricks of the outer wall can be guaranteed, the flatness and perpendicularity of the wall surface are improved, and the sizes of brick joints are easier to control.

Description

Technical Field

[0001] The invention relates to the technical field of exterior wall split brick construction, in particular to a complex node exterior wall split brick construction method. Background Art

[0002] Exterior wall split bricks, also known as exterior wall tiles, ceramic tiles, or tiles, are a building material used for both decorative and protective purposes on building exteriors. They are typically made from clay, quartz sand, and feldspar, fired at high temperatures. They are characterized by their hardness, weather resistance, and rich colors. By laying a large number of these bricks on a building's exterior, they can both decorate and protect the exterior.

[0003] In the prior art, when constructing exterior wall tiles, it is inconvenient to paste them at some complex nodes, which affects the pasting effect of the split bricks on the exterior wall and also affects the construction period.

[0004] The information disclosed in this background technology section is only intended to enhance understanding of the overall background of the invention and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the above technical defects and provide a construction method for splitting bricks in complex node exterior walls.

[0006] In order to solve the above problems, the technical solution of the present invention is a complex node exterior wall split brick construction method, which includes the following steps:

[0007] Step 1: Use cement mortar base and cement mortar powder to paint the exterior wall surface layer;

[0008] Step 2: Split the bricks on the exterior wall according to the design and paste them with special mortar;

[0009] Step 3: Use semi-dry powder or slurry squeezing process for grouting. The minimum size of the internal angle of the exterior wall tiles must be ≥60mm;

[0010] Step 4: After the wall is dry, use exterior wall paint to color the seams and apply water repellent on the exterior wall tiles;

[0011] In step two, the following complex nodes are included: facing brick corner end treatment, facing brick door and window edging nodes.

[0012] Furthermore, in the step 1, the thickness of the plaster is ≥15mm, the wall is plastered and the tiles are watered one day before the construction of the step 1, and the depth of the grout is recessed by 2-3mm. In the step 2, the brick joint is 8-10mm.

[0013] Furthermore, when the tiles are pasted, a gap of 10-15 mm is left between the tiles and the upper waistline, and a gap of 10-20 mm is left between the tiles and the lower waistline.

[0014] Furthermore, in step 2, it is necessary to layout the exterior wall tiles, the exterior corner tiles are greater than 100mm (here refers to the length or width of the exterior corner tiles), the exterior corner facing tiles of the window wall are greater than 80mm (here refers to the length or width of the exterior corner facing tiles), the length of the vertical bricks above the window top under the exterior wall line is 130-170mm, the length of the vertical bricks above the door and window top under the exterior wall balcony top is 120mm or 180mm, and a 30-60mm gap is reserved at the bottom of the balcony slab.

[0015] Furthermore, the treatment of the outer corner of the facing tiles includes: when the facing tiles of two sides meet at the outer corner, the cutting angle of the intersection angle is greater than 50 degrees, and mortar is used for squeezing during splicing so that there is no gap at the intersection; when the facing tiles of two sides meet at the inner corner, mortar is used for squeezing so that there is no gap at the intersection.

[0016] Furthermore, when the facing bricks are used to secure the edges of doors and windows, mortar is squeezed into the joints between the facing bricks and the door and window frames, leaving no gaps.

[0017] Furthermore, the brick wall should be cleaned before pasting, and the remaining waste mortar blocks, dust, oil stains, etc. on the wall should be cleaned. When the base layer is a concrete wall, the bulge formwork should be chiseled and the oil stains should be cleaned. The smooth wall surface should be roughened. The primer should be applied in layers. The first coat is 5mm thick. After applying, it should be brushed and dried. The second coat should be applied with a thickness of 7-10mm. The exterior wall tiles should be soaked for more than 2 hours before use and bubbles should be generated. Then take them out and dry them for use.

[0018] Furthermore, when hanging the lines, both sides of the corners are hung straight, and several horizontal lines are marked on the bottom of the mortar cake, and vertical lines are marked on the windows of the corners as control marks when laying the facing tiles; when paving the tiles, the upper edge of the tiles is kept straight, and after laying a layer of tiles, the upper edge of the mortar is scraped flat. Before using the tiles, they are classified and stacked according to size and used in different parts to avoid the size deviation of the tiles causing the tile joints to be crooked.

[0019] The advantages of the present invention compared with the existing technology are:

[0020] 1. The present invention adopts different construction methods for different complex nodes, which can ensure the quality and effect of the exterior wall split brick construction, improve the wall surface flatness and verticality, and make the brick joint size easier to control. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the layout of the facing bricks of the present invention.

[0022] Figure 2 It is an effect diagram of exterior wall brick tiling of the present invention.

[0023] Figure 3 This is a flowchart of the organization of the construction of exterior wall tiles in the first embodiment of the present invention. DETAILED DESCRIPTION

[0024] In order to make the contents of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0025] like Figure 1-3 As shown, the construction method of splitting bricks on complex node exterior walls includes the following steps:

[0026] Step 1: Use cement mortar base and cement mortar powder to paint the exterior wall surface layer, with a painting thickness of ≥15mm. The wall paint and the tiles are watered and moistened one day before the construction of step 1. The depth of the grout is recessed by 2-3mm. In step 2, the brick joint is 8-10mm.

[0027] Step 2: Split the bricks on the exterior wall according to the design and paste them with special mortar. The exterior wall tiles can be matched according to specifications, varieties, colors and proportions. The exterior wall tile construction includes the following complex nodes: the treatment of the exterior corners of the tiles and the edge nodes of the doors and windows.

[0028] When pasting the tiles, leave a gap of 10-15mm between the tiles and the upper waistline, and leave a gap of 10-20mm between the tiles and the lower waistline.

[0029] In step 2, it is necessary to arrange the exterior wall tiles. The outside corner tiles should be larger than 100mm, the outside corner tiles of the window wall should be larger than 80mm, the length of the vertical tiles above the window top under the exterior wall line should be 130-170mm, the length of the vertical tiles above the door and window top under the exterior wall balcony top should be 120mm or 180mm, and 30-60mm should be reserved at the bottom of the balcony slab.

[0030] The treatment of the external corners of facing tiles includes: when the facing tiles of two surfaces meet at the external corner, the cutting angle of the intersection angle is greater than 50 degrees, and mortar is used for squeezing during splicing so that there is no gap at the junction; when the facing tiles of two surfaces meet at the internal corner, mortar is used for squeezing so that there is no gap at the junction.

[0031] When assembling the facing bricks and door and window frames, mortar is squeezed into the joints between the facing bricks and the door and window frames to leave no gaps.

[0032] Step 3: Use semi-dry powder or slurry extrusion technology to construct the grouting, and the minimum size of the inner corner cutting of the exterior wall tiles must be ≥60mm.

[0033] Step 4: After the wall is dry, use exterior wall paint to color the seams and apply water repellent on the exterior wall tiles.

[0034] Before pasting, the brick wall should be cleaned, and the remaining mortar blocks, dust, oil stains, etc. on the wall should be cleaned. When the base layer is a concrete wall, the place where the mold is expanded should be chiseled and the oil stains should be cleaned. The smooth wall surface should be roughened. The primer should be applied in layers. The first layer is 5mm thick. After applying, sweep the roughness. After drying, apply the second layer of primer with a thickness of 7-10mm. Soak the exterior wall tiles for more than 2 hours before use and generate bubbles. Then take them out and dry them for use.

[0035] When hanging the lines, hang them straight on both sides at the corners, draw several horizontal lines on the mortar cake, and draw vertical lines at the windows at the corners as control marks when laying the facing tiles; when paving the tiles, keep the upper edge of the tiles straight. After laying a layer of tiles, scrape the upper edge of the mortar flat. Before using the tiles, classify and stack them according to size and use them in different parts to avoid the size deviation of the tiles causing the tile joints to be crooked.

[0036] Example 1

[0037] University campus construction: paving of exterior wall tiles of teaching buildings.

[0038] For exterior walls in insulation areas, the method is as follows: 1. Base wall: concrete wall and aerated blocks; 2. 15mm thick DPM20 mortar leveling; 3. Adhesive + anchor bolts: inorganic plasticized microporous insulation board (Grade A), with no less than 10 fixed anchor bolts / m2, arranged in a plum blossom shape, and the insulation board bonding thickness is 5mm; 4. The insulation board finishing mortar thickness is 7mm, completed in two operations, with a hot-dip galvanized steel wire mesh 0.9@12.7*12.7mm pressed in the middle; 5. Matching special adhesive, bonding thickness 7mm; 6. Exterior wall tiles, grouting width 15mm, depth 7mm, black grouting agent.

[0039] The method for laying exterior wall tiles in non-insulated areas is as follows: 1. Base wall: concrete wall and aerated blocks; 2. Level with 15mm thick DPM20 mortar, and press hot-dip galvanized steel wire 0.9@12.7*12.7mm in the middle; 3. Use a special adhesive with a bonding thickness of 7mm; 4. For exterior wall tiles, use black grout with a 15mm wide and 7mm deep joint.

[0040] The tiling method is as follows: 1. All exterior wall tiles are split bricks; 2. Imitation split ceramic tiles are supplied by the construction unit: they are assembled from 60*240*12 strip split bricks and 60*(50*175)*12 corner split bricks, and the exterior wall tiles are brick red; 3. Wet pasting process is adopted: designated tile adhesive is used for pasting; 4. Split brick grouting process: designated black grout is used for caulking and grouting, with a seam width of 15mm and a seam depth of 7mm.

[0041] The construction conditions of Example 1 are as follows: 1. The exterior wall tiles are divided into insulated walls and non-insulated walls, among which the modeling columns are non-insulated walls. According to the requirements of process interspersing, the exterior wall tiles can be pasted after the finishing plaster layer of the non-insulated wall is accepted and the window frame is installed.

[0042] 2. The exterior wall tile pasting operation platform is based on the working conditions of each building: all floor-standing double-row steel pipe scaffolding is used. Before the operation, the floor-standing scaffolding needs to be supplemented with core rods on each working layer, fully covered with scaffolding steel mesh, and inspected and accepted.

[0043] 3. Before laying exterior wall tiles, ensure that there is no cross-operation on the wall where you are working to avoid contamination of the wall tiles and potential safety hazards.

[0044] 4. Before laying the exterior wall tiles, ensure that the floor elevation lines of each unit project are measured on the exterior wall surface, and the distance between the elevation measurement points is no more than 8m.

[0045] 5. Complete the ground leveling at the cantilever board to ensure that the overall levelness of the cantilever board meets the requirements for wall tile laying.

[0046] 6. The general climate characteristics of the region are: dry and windy in spring, hot and rainy in summer, sunny and refreshing with long sunshine in autumn, and cold and little rain and snow in winter. Exterior wall tile laying occurs in mid-summer, with part of the rainy season and high temperatures. During the laying phase, pay attention to the weather forecast daily and ensure there is no rainfall for one day after the tiles are applied. In hot weather, choose the cooler mornings and evenings for the installation. Also, take sunshade and rainproof measures to avoid direct sunlight and rain erosion before the adhesive has finally set.

[0047] Construction process parameters:

[0048] The exterior wall tiles are laid using a wet-paste process, the bonding material is the designated adhesive, and the grout is the black Degao grout of the designated brand, color, and specification. Before the materials are delivered to the site, the supervision, construction, and general contractors will jointly seal the product samples.

[0049] The exterior wall tiles are split bricks with anti-slip dovetail grooves on the back. The specifications of the split bricks are (60*240*12 / 60*(175+50)*12). The layout of the exterior wall tiles is uniformly confirmed by the construction unit and then laid in the sample area. After the laying is completed, it must be accepted by the construction unit and the paving construction can be carried out according to the confirmed layout drawing.

[0050] When laying exterior wall tiles, the width of the brick joints should be uniformly 15mm. Use Degao grout to fill the joints. After filling with a piping bag, use a special semi-flexible grouting tool to grout. The joint surface is a rounded arc. The grouting depth should be uniformly 7mm. The brick surface must not be contaminated during the filling and grouting process. The bonding layer should be pasted with a thickness of 4-5mm. Use anti-cracking mortar + fiberglass mesh to repair uneven areas in advance.

[0051] Before tiling the exterior wall tiles, ensure that other work processes on the top are completed. At the same time, explain to the indoor workers that it is strictly forbidden to throw water, garbage, debris and other items out of the windows to avoid contaminating the wall tiles. Sign a letter of responsibility with the work teams in each area to prevent pollution from being thrown out.

[0052] Exterior wall tiles should be formally installed after window frames are installed. If window frames are not installed in time, the window installation company should confirm the upper and lower, left and right edge positions of the window before installation. The wall tiles at the window should be grouted after the outside of the window is glued.

[0053] Wall base treatment acceptance

[0054] Check for problems with the base of the plastered wall:

[0055] 1. The quality department and the subcontractor's quality personnel shall jointly check the incoming quality of the exterior wall plastering surface;

[0056] 2. Key inspection items include: Checking for hollows, cracks, and leaks in the wall; ensuring that all screw holes in the wall, beams, and columns are waterproof and sealed; ensuring that the moisture content of the plaster layer is ≤8%; and that the pH value of the plaster layer is ≤8. The base layer must be firm and free of looseness, cracks, or peeling. The base layer must be free of dust, oil, or adhering particles. Defects should be lightly marked with spray paint. Professional engineers will arrange for subcontractors to perform repairs and verify the repair status.

[0057] 3. After the maintenance is completed, the professional engineer will notify the quality engineer to conduct a second acceptance. If qualified, the project chief engineer will organize the project deputy manager, engineering, technology, and quality to conduct a joint process handover acceptance.

[0058] Maintenance of base plaster surface:

[0059] 1. Remove floating sand particles and dust from the wall;

[0060] 2. Use hand-held cutting tools to remove hollows and cracks, use the same strength secondary plastering press mesh, for the alkali base, first use a steel brush or machine to grind off the white alkaline substance, and then apply wall reinforcement agent to enhance the strength of the plaster wall;

[0061] 3. If the pH value of the wall exceeds the requirement, promptly apply 15% to 20% zinc sulfate or zinc chloride solution to the base surface several times, remove the precipitated powder and floating particles after drying, wash the surface with water, and then measure the pH value to ensure that it meets the requirements;

[0062] 4. Use foaming agent to seal the screw hole, use cement mortar to fill the outer side 2cm deep, and apply JS waterproof coating 8cm in diameter and 1.0 thick on the surface.

[0063] 5. Holes on the wall larger than 3cm in size shall be poured twice with fine stone micro-expansive concrete. After pouring and fully drying, a 1.0mm thick JS waterproof layer shall be applied on the outer side with an overlap size of 5cm.

[0064] Interface treatment of structural cantilever, beam bottom, and tiled window top:

[0065] 1. To prevent the bottom exterior wall tiles from falling off, after confirmation by the design and construction units, a 5mm thick coat of Renbang anti-cracking adhesive is applied to the bottom surface of the tiles, and a layer of fiberglass mesh is hung inside;

[0066] 2. The surface flatness and verticality of the base layer shall be inspected. The surface flatness of the base layer shall not exceed 3mm, and the verticality of the vertical surface shall not exceed 4mm. The bonding strength of the substrate shall not be less than 0.4MPa. When the bonding strength of the substrate is less than 0.4MPa, it shall be strengthened.

[0067] Structural cantilever height deviation repair:

[0068] 1. All exterior wall tiles are circular and closed, with bricks facing each other and seams facing each other. Strict requirements are imposed on the top and bottom elevations of the protruding components on each floor. The elevation deviation must meet the requirements for wall tile installation. If the height exceeds the requirements, the building manager will implement the chiseling work. At the same time, repairs will be carried out on any unqualified units in the previous process to avoid disputes later.

[0069] 2. Most of the facade columns are arranged at full height, and the verticality of the column plastering and the size of the components must be strictly inspected to avoid the formation of upper and lower trumpet mouths. If the verticality deviation of the floors exceeds 1cm, the chiseling and repair requirements must be strictly implemented.

[0070] Typesetting check and adjustment:

[0071] 1. According to the layout drawing requirements, compare the physical dimensions of the structure and make fine adjustments to the layout of the inlay area;

[0072] 2. The fine-tuning benchmark is to ensure consistency with the surrounding tiled areas, without staggered seams or misaligned platforms, and no small brick strips (≤30mm) should appear at the inner corners;

[0073] 3. Adjust the joints by fine-tuning the brick joints. After fine-tuning, ensure that the brick joint width is 14mm≤15mm;

[0074] 4. For arc components, the arc part and non-arc part should be laid out separately. The subsequent process can only be carried out after the layout is fine-tuned and confirmed.

[0075] Make sure the wall opening is vertical and square:

[0076] Adjust the verticality of the wall tiles according to the full-height vertical line, control the squareness of the wall corners according to the vertical control line of the external corner, and set the square control line and vertical control line according to the 3-4mm pasting thickness and the squareness of the wall.

[0077] According to the fine-tuning of typesetting, ejection control of ink lines, and setting of horizontal and vertical dividing lines:

[0078] 1. A horizontal control ink line is set at intervals of 2m. For walls longer than 2m, a vertical control ink line is set at intervals of 2m.

[0079] 2. In the area to be tiled, according to the full-height vertical line and the elevation control line, hang horizontal and vertical control lines at intervals of 2 skins and 2 bricks (in the horizontal direction, two bricks form a grid (including mortar joints)).

[0080] 3. After the wiring is completed, the responsible engineers of each building will organize the technical, quality, subcontracting, construction and supervision units to conduct a joint acceptance, implement the three-inspection system, and proceed to the next process after passing the joint acceptance.

[0081] Brick selection for facing brick tiling:

[0082] 1. The tiles used in the same building must be produced by the same manufacturer. It is strictly forbidden to cross-use tiles from different manufacturers in the same building;

[0083] 2. Tiles with a height and width deviation exceeding 0.5mm shall not be used;

[0084] 3. Wall tiles with damaged surface or without dovetail anti-slip grooves shall not be used;

[0085] 4. If there is any floating or dirt on the bonding surface of the tiles, it should be removed in time.

[0086] Cutting bricks:

[0087] 1. The processing of facing bricks requires centralized processing, and the remaining materials need to be sorted and reused, and must not be discarded or wasted;

[0088] 2. The cutting of tiles should not have burrs, burrs, missing edges or corners.

[0089] 3. Use special tools to cut centrally.

[0090] Tiling:

[0091] 1. Before paving, use a sprayer to moisten the wall surface with water to allow the water to penetrate into the wall surface. It is best not to have water hanging on the wall surface. Split bricks do not need to be soaked in water;

[0092] 2. When tiling tiles, first place the positioning tiles at the four corners of the tiling area;

[0093] 3. To ensure the cleanliness of the brick surface, the laying order should be from top to bottom;

[0094] 4. Start by staking a ruler on the bottom layer of bricks to support the first layer of tiles.

[0095] 5. Use a spatula to apply adhesive to the back of the brick and cover the bottom of the brick without leaving any gaps. However, the amount of adhesive should be appropriate to prevent the adhesive from overflowing and contaminating the brick surface, affecting the grouting operation. Then, lay the split bricks on the wall according to the grid lines. If any adhesive overflows, clean it up with a clean cloth or sponge in time.

[0096] 6. After pasting, use a leather hammer to tap gently to make it follow the line, then use a steel knife to adjust the vertical seam, and use a small bar to adjust the plane and verticality through the standard point;

[0097] 7. For non-whole bricks and corner bricks, pre-processed bricks are used and no brick cutting is required on the paving site;

[0098] 8. During tiling, use a ruler to check for flatness and verticality as you go. If any bricks are found to be above the standard, press the bricks and squeeze the mortar immediately. If any dents are found, remove the bricks and re-plaster them before tiling. If there are split bricks around protruding walls, replace them with whole bricks to fit them, ensuring neat edges. Do not randomly piece together non-whole bricks. Do not allow any non-whole bricks less than half a brick to appear on the entire wall.

[0099] Grout selection:

[0100] 1. The grout should be the color standard grout of the brand designated by the construction company, Magic One-Stir Black-2# black;

[0101] 2. The molding effect should be checked during use. Quality problems such as whitening, sanding, cracking, frosting, and discoloration should not occur. If any quality problems are found, stop using it immediately and report to the project chief engineer to find out the cause.

[0102] Grout mixing:

[0103] 1. First, pour the special grout into a clean mixing bucket, add water and stir mechanically according to the water-cement ratio required by the instruction manual of the special grout, and then set aside;

[0104] 2. The prepared special grout slurry should be used up within 3 to 4 hours. When the temperature exceeds 30°C, it should be used up within 2 to 3 hours.

[0105] 3. Do not mix too much at one time (generally mix one bag each time). Do not add water to the hardened slurry before re-use.

[0106] Feeding the seam, squeezing in

[0107] 1. The grouting method of feeding and squeezing must be used.

[0108] 2. Grouting method: Cut the conical tip of the extrusion bag to the required size according to the size of the split brick joint. Put the grout mortar for split bricks mixed according to the specified water-cement ratio into the extrusion bag. The filling amount of the mortar should not exceed 2 / 3 of the capacity of the extrusion bag. The mortar should be filled densely and the air in the bag should be exhausted to ensure continuous and smooth extrusion.

[0109] 3. When squeezing mortar, hold the extrusion bag with your left hand and squeeze it with your right hand, tilting it 45° to 60° in the direction of travel. Use moderate force and try to make the extruded mortar even and 2 to 3 mm higher than the split brick surface.

[0110] 4. Try to avoid caulking materials or cement mortar from contaminating the brick surface. If it happens, wipe it clean immediately with a clean cloth or sponge dampened with water.

[0111] Pointing and pressing joints

[0112] 1. The time interval between grouting and pressing is about 30 to 90 minutes (depending on the actual situation), and the grouting material should feel dry and not sticky when pressed by fingers;

[0113] 2. Use a special grouting tool to compact each filled brick joint horizontally and vertically. This project uses concave flat grouting, with the grouting depth being 7mm from the brick surface (generally 1 / 2 the thickness of the split brick);

[0114] 3. Focus on checking the depth of the grouting (generally 1 / 2 the thickness of the split brick) and pollution protection. Press evenly and repeatedly until the depth is consistent, the joints are straight and smooth, the grouting is continuous and dense, and the horizontal and vertical joints are smooth and smooth.

[0115] 4. If it rains during the grouting process, use colored strips of cloth or rainproof cloth to cover the surface to avoid damage.

[0116] Clean the walls

[0117] 1. After using a special grouting tool to grout, if the grout residue adhering to the brick surface loses water and dries, or falls off when touched by fingers, you can use a dry plastic brush to remove it. For the remaining stains, you can use a sponge dipped in water to scrub the brick surface.

[0118] 2. Seven days after the grouting is completed, the brick wall surface can be cleaned with clean water. If there are stubborn stains, use oxalic acid solution (oxalic acid: water = 1:10) for quick cleaning within 2 minutes. Before cleaning, the brick surface must be moistened with clean water to avoid affecting the color of the grout. When cleaning, wear rubber gloves and other necessary protective equipment to avoid damage. Do not use strong acids or alkalines such as hydrochloric acid for cleaning. After removing stains with oxalic acid solution, rinse with clean water again.

[0119] Inspection and repair: After the split bricks are laid and the mortar is dry, before lowering or dismantling the scaffolding, the split bricks should be knocked and inspected piece by piece. If peeling is found, it should be dealt with in time to avoid hidden dangers.

[0120] Finished product protection

[0121] 1. After the single-side wall tiles are installed, organize all units in the building to sign a finished product protection agreement, do a good job of protecting the edges such as window openings, hang a public notice prohibiting the throwing of garbage and debris, and clearly define the penalty and compensation standards;

[0122] 2. Provide good education for operating personnel, clarify the pollution hazards of finished product protection, and arrange special personnel to conduct inspections.

[0123] 3. Strictly implement the requirements of insulation first, window frame second, and exterior wall tiling last to avoid cross-construction causing large-scale rework and pollution;

[0124] 4. Each structural layer material should be protected from rain, impact and vibration before it is completely cured;

[0125] 5. During the dismantling of the frame, the requirements for management personnel to be on duty must be strictly implemented, and it is strictly forbidden for steel pipes, fasteners, and tools to hit wall tiles.

[0126] The acceptance criteria are shown in the following table

[0127] Item project Allowable deviation (mm) Inspection methods 1 Verticality (height ≤ 2000mm) 4 Check with a 2m vertical measuring ruler 2 Surface flatness 4 Check with a 2m ruler and feeler gauge 3 Square yin and yang corners 4 Check with a 2m extension cord

[0128]

[0129] The above description of the present invention and its embodiments is non-limiting. The accompanying drawings illustrate only one embodiment of the present invention. In short, if a person skilled in the art is inspired by the above description and, without departing from the purpose of the present invention, designs structures and embodiments similar to the technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A method for constructing complex node exterior wall split bricks, characterized by: The following steps are involved: Step 1: Use cement mortar base and cement mortar powder to paint the exterior wall surface layer; Step 2: Split the bricks on the exterior wall according to the design and paste them with special mortar; Step 3: Use semi-dry powder or slurry squeezing process for grouting. The minimum size of the internal angle of the exterior wall tiles must be ≥60mm; Step 4: After the wall is dry, use exterior wall paint to color the seams and apply water repellent on the exterior wall tiles; In step two, the following complex nodes are included: facing brick corner end treatment, facing brick door and window edging nodes.

2. The complex node exterior wall split brick construction method according to claim 1 is characterized by: The thickness of the plaster in step 1 is ≥15mm. The wall is plastered and the tiles are watered one day before the construction of step 1. The depth of the grout is recessed by 2-3mm. In step 2, the brick joint is 8-10mm.

3. The complex node exterior wall split brick construction method according to claim 1 is characterized by: When the tiles are pasted, a gap of 10-15 mm is left between the tiles and the upper waistline, and a gap of 10-20 mm is left between the tiles and the lower waistline.

4. The complex node exterior wall split brick construction method according to claim 1 is characterized by: In the step 2, it is necessary to arrange the exterior wall tiles, the exterior corner tiles are larger than 100mm, the exterior corner tiles of the window walls are larger than 80mm, the length of the vertical tiles above the window tops below the exterior wall moldings is 130-170mm, the length of the vertical tiles above the door and window tops below the exterior wall balcony tops is 120mm or 180mm, and 30-60mm is reserved at the bottom of the balcony slab.

5. The complex node exterior wall split brick construction method according to claim 1 is characterized by: The treatment of the outer corner end of the facing bricks includes: when the facing bricks of two surfaces meet at the outer corner, the cutting angle of the intersection angle is greater than 50 degrees, and mortar is squeezed during splicing to leave no gaps at the intersection; when the facing bricks of two surfaces meet at the inner corner, mortar is squeezed to leave no gaps at the intersection.

6. The complex node exterior wall split brick construction method according to claim 1 is characterized by: When the facing bricks are used to cover the edges of doors and windows, mortar is squeezed at the joints between the facing bricks and the door and window frames, leaving no gaps.

7. The complex node exterior wall split brick construction method according to claim 1 is characterized by: Before pasting, the brick wall should be cleaned, and the remaining waste mortar blocks, dust, oil stains, etc. on the wall should be cleaned. When the base layer is a concrete wall, the place where the mold is expanded should be chiseled and the oil stains should be cleaned. The smooth wall surface should be roughened. The primer should be applied in layers. The first coat is 5mm thick. After applying, it should be roughened. After drying, the second coat should be applied with a thickness of 7-10mm. The exterior wall tiles should be soaked for more than 2 hours before use and bubbles should be generated. Then take them out and dry them for use.

8. The complex node exterior wall split brick construction method according to claim 1 is characterized by: When hanging the lines, the double sides of the corners are hung straight, and several horizontal lines are marked on the bottom of the mortar cake, and vertical lines are marked on the windows of the corners as control marks when paving the tiles; when paving the tiles, the upper edge of the tiles is kept straight, and after paving a layer of tiles, the upper edge of the mortar is scraped flat. Before using the tiles, they are classified and stacked according to size and used in different parts to avoid the size deviation of the tiles causing the tile joints to be crooked.

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