Floor concrete construction scheme

Concrete floor is one of the most commonly used floors in our life, and it has very good wear resistance. Concrete floor is also called emery floor. With the development of science and technology becoming more and more advanced, the current floor is gradually upgraded to terrazzo floor. The concrete floor is mainly made of mineral alloy aggregate and made by special technology, so its characteristics are also very good, and its wear resistance and impact resistance are very good. Then the next small series will tell you about the knowledge about concrete floors.

introduction of concrete floor

concrete wear-resistant floor, commonly known as emery floor. Ground hardener has been rapidly popularized in Europe and America since it came out in 197s, and it has become the perfect replacement product of terrazzo floor. In the late 198s, wear-resistant floor was the first choice for developed countries.

concrete floor plan

1. Material requirements

①. Coarse aggregate particle size: 5 ~ 2mm

②. Fine aggregate is medium sand with good gradation

③. Water cement ratio: ≤.4

④. Slump: ≤15mm

2. Construction preparation

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②. Setting of ash cake of fine stone concrete: according to the completed elevation detection points, set up elevation control points of fine stone concrete with a size of 3*3, and put white porcelain tiles on them (taken out at ordinary times). The elevation accuracy is controlled at -5mm~+2mm, and it is forbidden to exceed the height to prevent the concrete surface from protruding.

(3). Before concrete is cast, the impurities on the original concrete surface shall be removed, and the water shall be moistened one day in advance (someone shall be responsible), and the accumulated water shall be removed before concrete is cast.

④ Sufficient vibrating tools shall be provided, including not less than 3 plug-in vibrators and not less than 1 flat vibrator, and spare ones (not less than 1 vibrator of all kinds and not less than 1 vibrating rods)

⑤. 4-6 trolleys

⑤. Concrete? Worker: 2 (shift) ×2=4 people, and 2 emergency personnel are organized to stand by, with 2 ~ 4 electricians, 2 mechanics and 4 mechanics each.

3. Concrete pouring and tamping

①. Concrete transportation: two concrete pumps and trolleys are used for horizontal transportation.

②. elevation control: based on the elevation points on the original concrete slab, it shall be leveled with a 3m aluminum alloy scraper, and rolled repeatedly with an iron bar (not less than 3 times), then it shall be leveled with an aluminum alloy scraper to remove laitance and bleeding, and the lower part shall be supplemented with concrete. After the initial water collection, it will be leveled again with a wooden wipe for about 2 hours, and the tiles on the standard control points will be taken out, and the detection steel bars for controlling the elevation will be smashed into the concrete; During the above operation, a level is used for correction, and the surface error is controlled at+1 mm..

③. Concrete pouring

a) Treatment of water and mortar for moistening the pump pipe: firstly, extend the pump pipe beyond the scope of pouring, drain the water, and take the mortar in containers (wooden boxes can be made of templates) and disperse it to the surface to be poured, with the thickness not more than 1 mm.

b) concrete vibrating? : First, the plug-in vibrator is used to vibrate with the discharge of the concrete pump. After 1 hour, vibrate with a flat vibrator.

c) water secretion treatment: before the plate vibrator vibrates, make several small ditches with a shovel to drain the accumulated water. At the same time, wipe it flat with wood, and then use plastic water pipes, buckets and buckets to remove stagnant water again.

d) prevention of cold joint: in order to prevent accidents (such as mechanical failure and pump pipe blockage), when erecting the pump pipe, it is considered to lay a 2-high horse stool under the pump pipe with a width of 12mm, keep the passage width not less than 8mm, and add a platform of 2×16mm every 1 meters for smooth traffic. And with 4 ~ 1 hand-push dumpers, the concrete will be transported manually, and the width of the cast concrete will be controlled at 3～5mm. If it is difficult to eliminate the fault at the moment, the circulation channel will be set up and more transport personnel and vehicles will be added.

4. Guarantee measures

①. Lighting: dysprosium lamps shall be set at the four corners of the casting range, with 6-8 (stationary) iodine tungsten lamp lamps, 4 movable iodine tungsten lamp lamps and several lamps (standby).

②. column angle treatment: pop up the elevation control line +1mm on the steel bars at the four corners of the column in advance, and after the column line confirms that the elevation is correct, flatten it with a wooden mold to ensure that the four corners of the column are flush and beautiful.

③. The bracket of expansion joint cover plate shall be installed before the concrete is poured on the floor (constructed by other units).

(4). The concrete pouring range must be determined according to the initial setting time of concrete, the leveling work of concrete and the construction time of wear-resistant floor, and the range shall not be too large.

concrete floors are still very recognized by everyone in our life. Now many industries are using concrete floors, such as warehouses, docks, factories, parking lots, maintenance workshops, garages, warehouse-style shopping malls and so on. Because the concrete floor not only has very good wear resistance and impact resistance, but also has a very beautiful appearance, in addition, the concrete floor can also reduce dust, increase the oil resistance of the ground, and form a high-density, easy-to-clean, seepage-resistant ground.