Construction technology of emery wear-resistant material


Release time:

2016-08-26

Author:

New Earth Group

Source:

Construction technology of emery wear-resistant material

Emery wear-resistant floor is a factory ready-mixed, on-site use of a dry type floor material, red, yellow, green, gray and other colors can be selected, its main ingredients for natural ore, more in line with the concept of environmental protection. Direct construction in the initial setting stage of the concrete surface, after the construction to form a hard and dense, dust-free and beautiful and highly wear-resistant ground. With the construction of concrete ground, the construction period is short; the durability is good, reducing the cost caused by periodic coating or surface thickening; various colors can be prepared to meet the aesthetic requirements. It is not easy to dust, clean and simple, low cost, simple process, high service life, wear resistance, impact resistance and other advantages, is the perfect substitute for terrazzo floor.
Construction process
1 Shaving surface lofting
According to the building structure reference ink line (such as wall +50cm line), use level gauge to determine the predetermined pouring thickness of concrete in the floor pouring area, set horizontal elevation marks, and carefully review, control the maximum concave-convex deviation within 3-5mm.
2 Concrete pouring
(1) Sprinkle water before concrete pouring to make the foundation in a wet state. (2) Pour the concrete to the elevation once as much as possible. Use concrete materials to make up and vibrate the parts that do not reach the elevation. It is strictly prohibited to use mortar to repair. Use a flat plate vibrator to vibrate, and use a special steel roller to repeatedly roll, and use wood to wipe the pulp at the column, corners and other parts. Cement grout shall be at least 3mm thick to the surface after the concrete has been leveled. (3) After the concrete pouring is completed, rubber tubes or vacuum equipment shall be used to remove bleeding, and the construction of wear-resistant materials shall be started after being repeated for more than two times. Before the construction of wear-resistant materials, the construction personnel should wear flat rubber shoes in the middle stage of operation, and wear waterproof paper shoes in the later stage of operation.
3 First spreading wear-resistant materials, smoothing and coating
(1) The timing of spreading wear-resistant materials varies with climate, temperature, concrete mix ratio and other factors. Spreading too early will make the wear-resistant material sink into the concrete and lose the effect; Spreading too late concrete has solidified, will lose the cohesive force, so that the wear-resistant material can not be combined with the resulting stripping. The method of judging the spreading time of wear-resistant material is to step on it and sink about 5mm, then the first spreading construction can be started. (2) The water at the equilateral lines of walls, columns, doors and formwork disappears quickly, so spreading should be given priority to prevent the effect from being reduced due to water loss. (3) The amount of spreading for the first time is 2/3 of the total amount. The mixture shall fall evenly and shall not be separated by throwing. After spreading, the mixture shall be smoothed with a wooden trowel. After the wear-resistant material absorbs a certain amount of water, it is then milled and dispersed by a roller cutter and combined with the base concrete slurry.
4 Second spreading wear-resistant materials, smoothing and coating
(1) When spreading for the second time, first measure the levelness with a ruler or a straight scraping rod, and adjust the unevenness of the first spreading. The direction of the second spreading should be perpendicular to the first spreading. (2) The second spreading amount is 1/3 of the total amount. After spreading, the spreading amount is immediately leveled and polished, and the polishing machine operation is repeated at least twice. The operation of the smoothing machine shall be carried out in a vertical and horizontal direction, which shall be uniform and orderly to prevent the accumulation of materials. The corners are treated with wooden trowel. (3) When the surface material hardens until the finger pressure sags slightly, the rotating speed and angle of the smoothing machine shall be adjusted according to the hardening situation, and the smoothing machine shall be criss-crossed for more than 3 times. (4) The flatness of the wear-resistant floor is required to be 2m square with a maximum deviation of 3-5mm, and the maximum deviation between the extreme high point and the extreme low point is not more than 20mm. Try to avoid cracking, peeling or sand phenomenon.
5 Surface modification and curing
(1) There are still messy smearing lines in the back layer of the smearing machine operation. In order to eliminate the smearing lines, a thin steel trowel is finally used to carry out orderly and same-direction manual calendering on the opposite layer to complete the modification process. (2) wear-resistant floor construction 5-6 hours after spraying curing agent conservation, the amount of 0.2 liters/m2. Or covered with plastic film to prevent cracking. (3) wear-resistant floor surface construction can be removed after 24 hours, but should pay attention not to damage the edge of the floor. (4) After 5-7d of completion, cutting seams should be made to prevent irregular cracks. The cutting seam should be 6-8m (generally determined according to the distance between workshop columns). Cutting should be unified elastic line, to ensure that the cutting seam neat and straight, cutting depth should be at least 1/5 of the floor thickness, caulking material using pre-formed or cut elastic resin and other materials, it is recommended to use sealant.

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