Friday, February 10, 2017

Tile ground construction technology standards

Work instructions ------ tile floor construction technology standards

First, the construction preparation
1. Materials and main equipment
1) cement: Portland cement, ordinary Portland cement; its label should not be less than 425, and is strictly prohibited mixed with different varieties, different grades of cement.
2) sand: sand or coarse sand, over 8mm pore size sieve, the mud content should not be greater than 3%.
3) Tile with factory certificate, compression, bending and specifications are in line with the design requirements, the appearance of color consistent, the surface smooth (cement tile requirements surface smooth, smooth, pattern pattern is correct), neat corner, no warping and Channeling.
4) oxalic acid, caustic soda, 107 plastic, etc. are factory certificate.
5) The main machine: bucket, flat shovel, iron trowel, bar, sieve, screens sieve, hammer, rubber hammer, square feet, marble machine.
2. operating conditions
1) wall + 50cm level line has been playing well, and check correct.
2) wall plastering, roof waterproofing and door frames have been installed.
3) ground cushion and embedded in the ground a variety of pipelines have been done. Through the floor of the standpipe has been finished, the pipe hole has been blocked dense. There is a floor drain room should find a good water.
4) in advance to do the work of selecting the brick, in advance with a wooden nail box (according to the size of the brick) mold, unpacking block after the set, long, wide, thick not more than ± 1mm, Check, not more than ± 0.5mm. The appearance of cracks, broken corners and the surface of the defective plate out, and according to flower type, color selection were stacked.
Second, the operation process
1. Process flow
Grass-roots treatment → find the standard height, the elastic line → smear layering mortar → bomb brick control line → shop brick → hook, scratch → maintenance → skirting board installation
1) grass-roots treatment: the concrete base of debris on the clean-up, and with chisel off the mortar floor ash, with a wire brushing the floating layer. Such as grass-roots oil, the application of 10% of the fire water to brush the net, and the water in time to rinse the lye.
2) to find the standard, the elastic line: according to the wall +50 cm level line, down the measured layer elevation, and playing on the wall.
3) smear layering mortar:
A. Wet water: in the clean up the grassroots level, with a watering the ground floor evenly sprinkle water again.
B. Plaster and tendons: from the level of the surface layer has been raised to the level of leveling epithelium (surface layer height minus the brick thickness and thickness of the adhesive layer), plaster cake spacing 1.5m, gray cake On the level of cement mortar leveling layer of the elevation, and then from the side of the room began to tender tendons (also known as red). There is a floor drain room, should be from the direction of the ground to the ground leakage radial wiping tendons, and find a good slope. Plaster and tendons should be used dry hard mortar, the thickness should not be less than 2cm.
C. The stall (that is, in the standard between the cement layer of mortar): clean pad tendons of the remaining pulp residue, brushing again the cement slurry (water-cement ratio of 0.4-0.5) adhesive layer, with the brush with the pulp The And then according to the elevation of the tendons, with a small shovel or wood trowel will have been mixed with cement mortar (with a ratio of 1: 3-1: 4) paved between the tendons, with a wooden trowel flattened , Small wooden grinds flattened, and then rubbed the wood trowel, so that the laying of mortar and tendons leveling, and with a large bar to check its flatness, and check the elevation and flood slope is correct, after 24 hours watering conservation.
4) bomb paving control line: When the leveling layer mortar compressive strength reached 1.2Mpa, the man began to control the brick bricks. According to the design requirements and the size of the brick plate size, to determine the plate paved gap width, when the design is not specified, close paving gap width should not be greater than 1mm, virtual seam paving gap width should be 5-10mm.
In the room points, from the vertical and horizontal direction of the two rows, when the size of less than the whole brick, the non-brick for the corner, horizontal parallel to the first row of the door should be the whole brick, the non-brick Row in the wall position, vertical (vertical door) should be divided in the room, non-brick symmetrical emissions in the two walls. According to the number of brick and seam has been identified, in the ground on the vertical, horizontal control line (every four brick a control line).
5) paving: In order to find a good location and elevation, should start from the door, vertical shop 2-3 rows of brick, as the standard pull pull vertical and horizontal horizontal line, shop should be from the inside out of the operation, Just lay the brick in the by, each brick should be with the line, the operating procedures are:
A. Paving before the brick plate into the half of the bucket in the water immersion, dry surface after no water, before use.
B. Leveling layer of water wet, even brushing the slurry (water-cement ratio of 0.4-0.5), brushing area should not be too large, how much brush shop how much.
C. The thickness of the bonding layer: If the use of cement mortar laying should be 10-15mm, the use of asphalt binder laying should be 2-5mm, the use of adhesive laying should be 2-3mm.
D. Combination layer of mixed materials: the use of asphalt cementation materials and adhesives, in addition to the instructions according to the factory instructions should also be tested after the test to determine the mix ratio, mixing even when mixing, no ash, a mixing may not Too much and is required to run out within the specified time. If the use of cement mortar bonding layer, the ratio should be 1: 2.5 (cement: sand) dry hard mortar. Should also be used with the mix, before the beginning of coagulation, to prevent the impact of bonding quality.
E. Paving, the brick on the back of the wiping adhesive mortar, paved to have a good brush on the leveling layer of mud, brick lug slightly higher than the standard line, find, find straight, find the side, the brick mat Wood, with a rubber horn shot, the order from the inside out of piled out, so that the brick mortar full, close to the close, solid, and ground leakage at the junction, with a sand wheel saw the brick and the ground is consistent with the ground. When the first floor shop a shop, a large area of ​​construction, should be taken section, sub-paved.
F. Sewing, finishing: shop 2 to 3 lines, should always pull the line to check the flatness of the stitch, such as beyond the provisions should be immediately trimmed, will sew straight, and with a rubber hammer filming. This work should be done before the junction layer is condensed.
6) Gouge scratch: surface paving should be carried out within 24 hours of scratches, tackle the work, and should be used with the same species, with the same name, the same color of cement.
A. Grouting: 1: 1 cement mortar grouting, the depth of the seam should be thick for the brick 1/3, requiring mortar mortar dense, smooth and smooth. With the hook with the remaining cement mortar away, wipe.
B. Wiping: If the design requirements do not leave the gap or the gap is very small, the requirements of the seam straight, in the paving a good brick surface layer with a slurry pot to the sewn water slurry, and then spread with dry cement in the seam On, and then rubbed with cotton yarn group, the gap wiped. Finally, the surface of the cement slurry wipe clean.
7) conservation: shop brick 24 hours, sprinkler conservation, the time should not be less than 7d.
8) inlaid skirting board: skirting board with bricks, the general use of the same species with the ground block, with the specifications, with the color of the material, the skirting of the seams should be aligned with the ground seam, laying should be in the room wall
Surface of the two ends of the corner at the corner of a brick, the wall thickness and height should meet the design requirements, as the brick leng as the standard hanging line, began paving, brick back up with adhesive mortar (with a ratio of 1 : 2 cement mortar), so that the mortar sticky monolithic brick is appropriate, and timely paste on the wall, brick leng to keep the line and immediately shoot real, then squeeze out the mortar, the surface clean In the paste before the bricks to dry soak, wall brush wet).
Third, the quality standards
1. Variety of various types of surface layer used, the quality must meet the design requirements.
Fourth, the finished product protection
1. In the process of laying the plate, the installed door frame, the pipeline should be protected, such as door frame nails to protect the metal, the use of light trucks and other vehicles.
2. When cutting the floor tiles, do not operate on the paved brick floor.
3. When the pavement mortar compressive strength of 1.2Mpa, before the man can operate, but must pay attention to paint, mortar to the opposite layer to cover protection.
Five, should pay attention to the quality of the problem
1. Plate hollowing: grass-roots clean, uneven water sprinkler, brick is not soaked, cement slurry combined with the area of ​​the brush is too large after the dry air from the role of isolation, too early affect the strength of the adhesive layer and so on factors are led The reason for the hollowing.
Skirting board hollowing reasons, in addition to the same with the ground, but also because the back of the skull foot paste less amount of mortar is not wiped to the edge, resulting in corner empty drums.
2. Skirting board wall thickness inconsistency: As the wall plaster vertical degree, flatness beyond the allowable deviation, skirting board set when the horizontal line control, so the wall thickness is inconsistent. So before the inlay, first check the wall flatness, after processing and then paste.
3. Plate surface is unclean: the main finish after the finish, the finished product protection is not enough, the paint bucket on the floor tiles, in the tiles on the mix mortar, brush cover is not covered, etc., are caused by surface contamination.
4. Floor drain floor slope: do leveling layer mortar, not according to the design requirements of the slope of the slope to find slope. So must find the high, easy to find a good slope when the slope, plaster cake and tendons, wipe out the water.
5. Ground paving uneven, there are high and low: the tiles are not pre-selected, the thickness of the brick is inconsistent caused by the level of poor, or paving when the line is not strictly controlled by the horizontal line.

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