Wall brush stone construction plan

Wall brush stone construction plan

This process standard is applicable to the construction of wall brushing stones and water brushed bean stones in general industrial and civil buildings.

Materials and main equipment:
Cement: No. 325 or above slag cement or ordinary portland cement, the same color, should use the same batch of products.
Sand: medium sand. Before use, a sieve with a 5 mm pore size should be used.
Gravel: solid particles, must not contain harmful substances such as clay and other organic matter. The gravel specification should meet the requirements of the specification, and the grading should meet the design requirements. The middle 8.0mm is 6mm and the small 8mm is 4mm. Before use, wash with water and dry it in groups according to different specifications and colors, stack it, and cover it with cloth. It is required that the color of the same type of gravel be the same and should be delivered at one time.
Adzuki Bean: The particle size of 5 ~ 8mm is appropriate, the mud content is not more than 1%, used twice before screening, rinse with water reserve.
Lime cream: Lime was dried into lime paste over a 3mm sieve a month before use. When used, the mortar should not contain uncured particles and other impurities.
Lime powder: It must be thoroughly boiled with water for the first week of use, and must not contain particles that have been aged.
Other materials: 107 glue, YJ302 interface agent, fly ash and so on.
Pigments: Apply mineral pigments with good alkali and light resistance.
Main equipment: Hand pressure pump 2~3 sets (according to the amount of brush stone and the number of construction workers), wooden trowel, big bar, small bar, ruler, square ruler, steel plate trowel, small pressure gauge, pulp Pots, big (small) buckets, soft (hard) hair brushes, chopsticks pens, grid bars, etc. Plasterers commonly used tools such as cars, ash spoons, small ash buckets, iron plates and so on.

Operating conditions:
Structural engineering has passed acceptance.
According to construction requirements, ready for double row racks or baskets, bridge shelves. The pole of the shelf should leave the wall 20cm to ensure operation. It is best not to leave feet on the wall to prevent secondary repairs, resulting in a sense of flower on the wall.
Prefabricated holes and pre-embedded pipes are completed. The exterior wall cavity was waterproofed, and there was no leakage through the pouring test. The inspection was qualified. The door and window frame were installed and fixed, and the gap was plugged tightly with 1:3 cement mortar.
The walls are cleaned and the raised concrete on the walls should be leveled. The pits were layered and filled with 1:3 cement mortar.
Before the construction of a large area of ​​water brush stone, a model should be done first to determine the mix ratio and construction process, and a person should be assigned a uniform ingredient, and the good ratio should be closed.

Process flow:
Casing around the door window (precast concrete exterior wall panel cavity plate seam treatment) → wall surface cleaning → watering wet wall surface (wall panel seam cracking test) → hanging vertical, sets of rules, plastering cake , 冲 bars → layered screed → mortar line → sticky bar, dripping bar → gravel slurry → repetitively rubbing and squeezing → iron squeezing, pressing → compaction → manual brush pumping → Rinse from top to bottom with a pulper → start dividing line, dripping strip → cement plaster

The basement is a concrete exterior wall:

Grassroots treatment: cut concrete on the surface of the concrete, remove the crisp surface of the board, brush off the dust with a wire brush, rinse with clean water, and moisten the water; use 10% of fire alkali water to brush the oil and dirt on the concrete surface, and use clean water. Rinse and dry, spray or throw 1:1 mixed water with a 20% volume of 107 glue cement mortar. After the final coagulation, it is watered and cured until the mortar and the concrete slab are cemented (hand mortar does not fall off) before being used for bottoming; or YJ302 concrete interface treatment agent is used to treat the base layer. There are two methods of operation: In the case of a clean concrete substrate, apply a “treatment agent” and then apply a cement mortar immediately. The treatment agent must not be dry when the plastering is required. The second is to spread the layer after the treatment agent. 2～3mm sand, to increase the roughness of the concrete surface, wait until it is hard and then make the bottom.Hang vertical.Set the square to find the rules: If the building is multi-layer, apply a special large line fall from the top down After vertical, and after stretching the wire, according to the vertical requirements of the wire in the big corner, door and window holes and other layers of plastering cake.If it is high-level, should be in the vertical direction of the big angle, doors and windows with theodolite vertical line, and according to the line points Plastering plaster to find rules, so that the vertical and horizontal direction to achieve a smooth and consistent.

Wipe the bottom of the mortar: According to the gray cake filled with the above bar filling, first brush a 10% mixed with 107% cement slurry, then immediately followed by stratification over the smear base mortar, room temperature base ratio can be used 1:: l : 6 (mixed mortar) or 1:0.5:0.5:6 (mixed mortar with fly ash), make the bottom ash in time with a large horizontal and vertical bar, and use a wooden trowel to pick up the hair. After the final coagulation, water conservation.
Stretching, sticking, and dripping: According to the size of the drawings, the bullets and sticks shall be divided, and the sub-leaves shall be flattened, and the lines shall be horizontally and vertically aligned. And according to the provisions of the provisions of the provisions of dripping strips.
Wipe cement stone slurry surface layer: scrape 10% of 107 cement paste, followed by wipe 1:0.5:3 (cement: lime paste: small 8 PCT) gravel slurry, divide it from the bottom up twice Gradually divide the grid, and timely check the flatness with a small bar (the rubble slag layer is higher than the lmm bar), then flatten and compact the gravel layer.
Trimming and spray brushing: The layer of gravel residue that has been wiped is leveled and compacted, squeezed into cement slurry, brushed with water and brushed with cement slurry, re-compacted and slippery, repeated for 3 to 4 times. The surface layer begins to condense, indicating that there is no trace, and brushing with a water brush does not leave the stone as degree. One person brushed the grout with a brush and dipped in water. One person followed the nozzle of the hand pump and sprayed the water from top to bottom. The sprayer was usually 10 to 20 cm away from the wall. The surface grout was rinsed to expose the gravel. Finally, the small one was used. The kettle watered the surface of the gravel. After the moisture control of the wall is finished, the grid is marked out and cement paste is used to make a joint.
Operation procedure: Brushing stone on windows, doors, windowsills, balconies, rain covers, etc., should be done first, followed by a large surface to ensure that the large surface is clean and beautiful. Brush Shiyang angle site, the nozzle should be sprayed from the outside, and finally washed with a small kettle watering. The underside of the sill, window sill face, balcony, rain cover, etc. should be made of a drip tray with a width of 7mm, a width of 10mm, a depth of 10mm, and a distance of no less than 30mm from the skin. A large area of ​​wall brushing stone can not be completed in one day, continue construction and refresh before living. The brush stone that was made the first day should be thoroughly slushed with water so that it can be easily cleaned and prevented from contaminating the wall when it is stained with cement slurry. The tweezers should remain on the compartments.

The base floor is a brick wall:

Grassroots treatment: Before the plastering, the dust and dirt on the grassroots floor should be cleaned, the feet should be blocked, and the water should be moistened.
Hang vertical, sets of rules to find the rules: starting from the top with a special line fall, stretch the wire hanging straight, and then layered plastering cake, in the yin and yang angle, on both sides of the window, columns, cymbals, etc. should be hanging line to find straight, stretched wire, Wipe the ash cake and refill it.
Wipe the bottom mortar: At room temperature, use 1:0.5:4 mixed mortar or 1:0.3:0.2:4 fly ash mixed mortar to make a base. When plastering, control the thickness of the plaster with the reinforcement, and it should be layered and distributed. File, until smooth with ribs. Requires wiping when the head is wiped. The mortar was squeezed into the mortar to make it firmly bonded. The surface of the mortar was leveled and the water was cured after the final coagulation.
Stretching, dividing, sticking, dripping: According to the size of the drawing line, the line is divided into two parts, and the dividing line shall be horizontal and vertical. The dripping line shall be pasted according to the requirements of the specification and drawings, and shall be Straight.
Wipe cement stone pulp slurry: first scrape a 107 cement paste with 10% water content, then wipe 1:0.5:3 cement stone slurry, wipe it from the bottom to the last time, and apply it to the thickness of the grid strip. The ruler is wiped and leveled, and the convex and concave areas are processed in time. After leveling, the compaction, flattening, and leveling are performed until the gravel is faced up.

Trimming and spray painting: leveling and compacting the already- coated stone slag surface, squeezing out the cement slurry, brushing the water slurry with water and brushing water, re-compacting and sliding, repeating 3 to 4 times. The surface layer starts to condense, the fingertips are clear, and the brush is not used to remove the gravel. One person brushes the cement slurry with a brush, and one person follows the hand pump nozzle to spray the water from the top to the bottom. From the wall of 10 ~ 20cm, the surface of the cement slurry rinsed to expose the gravel, and finally washed with a small kettle to grind the gravel, until the wall surface moisture control dry, from the grid, and timely cement paste jointing.
Operation procedure: Brush and stone on windows, doors, windowsill, balcony, rain cover, etc. First, make a small face, and then make a large face to ensure that the wall surface is clean and beautiful. Brush Shiyang angle site nozzle should be washed from the outside, and finally washed with a small kettle watering. The bottom of the sill, window sill, face, balcony, and rain cover should be drip trays with a width of 7mm, a width of 10mm, a depth of 10mm, and a distance of no less than 30mm from the skin. A large area of ​​wall brushing stone can not be completed in one day. If it is necessary to continue construction, the brush stone should be wetted with water from the previous day before it is refreshed. It is easy to clean the surface of the brush when it is sprayed and prevent contamination of the wall surface.

Winter rain construction:
Winter construction In order to prevent the ash layer from freezing, lime mortar should not be mixed in the mortar. In order to ensure the workability of the mortar, the same volume of fly ash can be used instead. For example, the base ash mixing ratio can be 1:0.5:4 (cement: fly ash: sand) or 1:3 cement mortar; the cement stone slurry ratio can be 1:0..5:3 (cement: pulverized coal Gray: gravel) or changed to 1:2 cement gravel slurry.
Plaster mortar should use hot water mixing, and take insulation measures, the mortar temperature should not be less than +5 °C. The plaster layer must not be frozen during the initial hardening.
Before entering the winter construction, the mortar should be mixed with additives that can reduce the freezing point, plus calcium chloride or sodium chloride. The amount of the mortar should be adjusted according to the atmospheric temperature at 7:30 in the morning.
With the frozen masonry wall, the outdoor plaster should be completely thawed and then wiped. Do not use hot water to flush the frozen wall or use hot water to eliminate the frost on the wall. During the severe winter period, no construction is allowed.
During the construction of the rainy season, precautions should be taken to prevent rain. The newly-finished brush stone wall should be blocked and prevented from being damaged in case of heavy rain.

Guarantee items:
The type and quality of the materials used must meet the design requirements.
Between the various plastering layers and between the plastering layer and the base must be firmly bonded without defects such as delamination, hollowing and cracks.

Basic items:
Surface: The granules are clear, well-distributed, densely packed, uniform in color, and free from granules and signs.
Section bars (slits): The width and depth are uniform, the bars (slits) are flat, smooth, and the corners are neat, horizontal and vertical, and smooth.
The drip line (groove): The flow direction is correct, the drip line is straight, and the width and depth of the drip tray are no less than 10mm, neat and consistent. Allow deviation items, see Table 9-5.

Exterior wall brush stone tolerances Table 9-5
Line Item Allowable deviation (mm) Inspection method
1 Facade vertical 5 Check with 2m pallet
2 Smooth surface 3 Check with 2m ruler and wedge feeler
3 Yin Yang angle vertical 4 Check with 2m pallet
4 Yin Yang Square Founder 3 Check with 2cm square ruler and wedge feeler
5 Wall skirts and feet straight 3 Pull 5m small line and check the size
6 grids straight 3 pull 5m small line and check the size
Single-layer, multilayer H‰ and ≤20 theodolite inspection
High-level H‰ and ≤30 theodolite inspection

The mortar stuck to the door and window frames and brick walls should be promptly cleaned. Aluminum alloy doors and windows should be timely glued a protective film to prevent pollution.

Apply a plastic film over the wall that has already been applied when spraying to prevent contamination. In particular, windy days must be carefully protected and covered. After the water brush stone of the building's entrance and exit is put to good use, nails shall be nailed in time to protect the mouth and prevent rust.
Do not damage or contaminate door/window glass and water brush stone walls when removing shelves and performing indoor/outdoor cleaning. When painters brush their oil, they should be careful not to overturn the oil tank to contaminate the wall. The brush sill and convex lines that have been made should be protected.
The gray layer is not bonded firmly and hollowed: the reason is that the base layer is not wet and wet; the base layer is not cleaned or cleaned; each layer of ash is too tight or plastered too thick; the water is not cured after the base is laid; the precast concrete The exterior wall panels are too smooth and the base layer is not "growthed"; the pastry is not cut clean; the hollows on both sides of the dividing strip are due to the cracking of the ash layers. Should pay attention to the grass-roots clean-up, watering; each layer of gray control plaster thickness can not be too thick; make a good ash wipe 24h attention to water conservation. The prefabricated concrete exterior wall panels must be cleared of pastry and subjected to "growth" treatment.

Dirty wall and inconsistent color: The brush stone wall surface is not smoothed and compacted, the cement slurry in the pit is not rinsed clean, or is not rinsed with clean water at the end; the raw materials are not enough for one time preparation; the color of the cement or gravel is not uniform or the mix ratio is inaccurate. Grading inconsistency. The operation should be repeated rubbing and smoothing, so that there is no uneven place, and finally washed with clean water. It is required that the proportion of brush stone should be mastered and the cement and gravel used should be prepared at one time.

Cracks, cracks: The reason is that the thickness of the surface layer is different. When the thickness of thin-walled intersection is different, the cracks are caused by the different weights, and the cracks after drying are increased. The pressure is not enough to pass through, and the dense layer under the gray layer is easy to form slashes or cracks; There are uncured particles in the slag, and the surface layer bursts when the water expands in volume. It is required that the bottom ash must be leveled, and the surface layer construction must be pressed according to the technical standards while pressing the water side until the surface is compacted and calendered.

Rotten root: The surface of the brush stone, which is in contact with loose water and the waist line, has not been cleaned. The surface has impurities. After the debris is cleaned, the rot is formed. Because of the difficulty in construction at the bottom, the pressure is not enough. The ash layer is not enough. Compact, dregs or local gravel are not dense after washing. Clean up the contact area between the brush stone and the loose water and waist line; the construction of brush root should be carefully and seriously.

Yin corner brush stone, wall brush stone pollution, turbidity, is not clear: the inside corner of the brush to do the brush stone two times to make two sides, the latter side of the brush will pollute the front side has been brushed. The entire wall is divided into several parts, and one piece is made afterwards. The pollution is already done when the brush is washed; the two sides of the inside corner are well-ordered, once made, and sprayed at the same time. To brush a large area of ​​stone on the wall, in order to prevent pollution, before brushing the stone after brushing, first brush the stone that has been cleaned and rinse with clean water and then wet it, and then flush it with a new brush. After the new life is completed, , And then use the clean water to wash brush stone has been done to prevent pollution caused by washing is not a net, cloudy.

The brush stone remains chaotic and the overall effect is poor: the brush stone rake should stay in the dividing line, or behind the water drop pipe, or at the edge of the independent decorative part, and must not remain in the block.

This process standard should have the following quality records:
Cement factory certificate and test report.
Sand quality certificate and mud content report.
Gravel, adobe and other quality certificates.
Lime powder, fly ash factory certification.
Other materials: 107 glue, YJ302 interface treatment agent factory certificate and instructions for use.
Quality inspection and assessment records.

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