JPS62233376A - Integral reinforcement finish of concrete slab - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention can be used in the process of forming cast-in-place concrete floors or slabs in general, from general floors to floors and rooftops of various buildings. It is.

[Conventional technology and its problems]

The main method of forming concrete slabs (floors) using conventional cast-in-place methods is to set a predetermined height of 25 to 30 ffj+ on a pre-cast and hardened concrete base, and then place the head on top of it. After driving nails into each location of the concrete base and stretching a thread between the nail heads,
Set up thin square joint rods to match the height with cement slag, then let it harden, then fill the space between each joint rod (and the hardened cement slag) with leveling mortar to make the same height. The common method has been to level the area, remove the joint bar, and fill the area with mortar. In addition, there are cases in which level reinforcement is welded to folded iron plates (deck plates), and in the case of rooftops where leveled mortar is formed through an asphalt-based waterproof layer on a concrete base, but in any case, the concrete base In order to level out the unevenness that is inevitably formed, it is necessary to apply a mortar layer after the hardening and level it out, and this process must be repeated approximately three times by hand using a trowel or the like. This tends to result in inaccuracies as the tension threads bend and the joint rods become twisted, which requires a great deal of effort and takes a long time to complete.Furthermore, the joint bars on the top surface of the underlying concrete layer, dust, etc. The formed mortar layer tends to peel or crack, and there are also problems with durability.

[Technical means to solve problems]

The present invention has been made in order to solve such problems, and first, a ceiling (for two people) whose upper end (1) is straight and whose distance from the upper end (1) is constant is constructed. FIG. 2 shows an example of a combination of multiple parts.

At this site, a plant (3) such as a level strut or a similar long nail is installed in advance at a predetermined level height, and the length (12) is placed at the top (3A) of the plant (3). Recessed ceiling (2A
), and after forming multiple rows, place conch between the rows! J-1-(4) is cast, and on the other hand, the lower end (5) is straight and the arm body (6) from which the rising distance is constant is formed on both sides. Separately create a ruler (56), place both arms (6) on the upper end (1) of the long body (1) in two rows, and while sliding it, place the lower end of the leveling ruler (56). Leveling the top surface of (4) to form a flat surface,
This is then cured to form the desired floor (slab) surface.

In addition, in the figure, steps (12A) are provided at the front and rear ends of the long body (12) to connect multiple pieces in a row if the length of the long body (12) is insufficient at the site. And the means are not limited to this.

[Example 1 (When forming a concrete floor on the ground)] As shown in Fig. 3, ground dowel stones (7) were laid down according to known means, and wooden stakes (8) were driven at intervals of 2 m in length and width. Cut off the head from the top and drive in a T7 nail (3) to determine its height.
2) Width: 1071 shoulders, depth to ceiling (2A): 25
Next, a long square lumber K (12) with a total length of 4 m was placed so that its recess e) covered the nail (3) K, and after providing two or more rows of these, a separately prepared arm (6) was placed. A wooden leveling ruler (56) with a straight line with a rising height of 35 mm and a lower end (5) of 196
) The upper end α) of the floor concrete IJ-) (4) filled between the rows is leveled while sliding the upper end α), and then the elongated body (12) is removed and hardened to form a flat monolithic layer. As shown in Figure 4, two concrete blocks are installed at predetermined intervals.
×1 Note that the rising distance of the leveling ruler (56) is
2) If the distance from the upper end (1) to the recess ceiling (2) is made equal to the height of the long body (12), there will be no trace of the long body (12) being removed. It is necessary to cut the level muscle (3).

[Example 3 (When forming a concrete floor on a folded iron plate)] Folded iron plate (Detsuki Play) by a known method) (ll)
Level striations (2) are welded and established at predetermined intervals on the top to make the height uniform, and the concrete floor is constructed in the same manner as in Example 1 to obtain a flat, monolithic concrete floor.

Since the distance from the arm of a leveling ruler that always slides at a constant height from the top of a bamboo-like plant to the lower straight part is constant, the filled concrete will automatically rise to a constant height. This means that the concrete is leveled horizontally, and moreover, it becomes possible to level the desired height level over a wide area at once with the initial filling of concrete. Therefore, further finishing
/ There is no need to create a layer, and there is no need to wait for concrete, cement slag, mortar, etc. to harden and repeat complicated and difficult manual operations, and there is no need for a mortar pump truck. Improved efficiency (
The effect of reducing construction period) and construction costs is enormous. In addition, the leveling of the construction surface becomes more accurate, as it eliminates the need to rely on guesswork using manual tools such as trowels, and eliminates the need to use materials that are easily deformed due to external conditions, such as tension threads and joint bars. Furthermore, since it is finished by integral molding, cracks may occur due to delamination, lifting, and differences in shrinkage rates.

[Brief explanation of drawings]

FIG. 3 is a cross-sectional view showing one construction example of the present invention, FIG. 4 is a cross-sectional view showing another construction example, and FIG. 5 is a cross-sectional view showing yet another construction example. . (1)... Upper end of the elongated body (2)... Recess of the elongated body (2A)... Recess ceiling (12)... Elongated body (
12A)...Level of long body (3)...Plants such as level bars (4)...Concrete (5)...Lower end of leveling ruler (6)...Leveling ruler Arm (56)...Leveling ruler (7)...Guri stone (8)...Stake (9)...
・a (10)... Control panel (11)...
・Folded iron plate (Detsuki plate) Kudzu

Claims (1)

[Claims] A long body having a ceiling with a linear upper end and a ceiling at a constant distance from the upper end is prepared from below as a single body or a combination of multiple parts, and the ceiling of the recess is prepared in advance. After installing multiple rows of the elongated bodies by supporting them on the tops of level bars or similar plants provided on site,
Concrete was poured between the rows, and on the other hand, a leveling ruler with arms on both sides with a straight lower end and a constant rising distance from there was created, and the arms were A finishing method for integrally reinforcing a concrete slab, which comprises placing and sliding the unhardened concrete on the upper ends of two rows of the elongated bodies, leveling the unhardened upper surface of the concrete at the lower straight part thereof, and hardening the concrete.