JP3065876U - Cement mortar peeling prevention device - Google Patents

Abstract

(57) [Abstract] [Problem] To increase the area for holding down the surface of an old cement mortar layer. In addition, the anti-peeling tool is used as the core of the new cement mortar to integrate the two. SOLUTION: The peeling prevention device 1 is made of a stainless steel thin plate. A plurality of annular portions 4 and radial portions 5 form a mesh as a whole and are formed into a low conical shape having a diameter of 20 cm or more. A stopper insertion hole 3 is provided at the center of the top 2.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a device for preventing peeling of cement mortar.

[0002]

[Prior art]

 Cement mortar on the exterior and interior of buildings will crack and peel over time. Therefore, in such a case, repair work will be performed.

[0003] Conventionally, the repaired portion that has been peeled has been performed as follows. One example is a disk-shaped washer 100 having a diameter of about 2 cm as shown in FIG. 5 and a hole reaching from the old cement mortar layer to the skeleton concrete layer by using a stopper 101 as shown in FIGS. 6 and 7. A disk-shaped washer 100 is fixed, a glass fiber mesh is stretched thereon, and a new cement mortar is applied.

The stopper 101 is slidably fitted with a shaft 103 having a conical tip at the center of a main body 102 having a rod-like shape and a slit 102a at the tip, as shown in FIG. By hitting the protruding end 103a of the shaft 103, the tip of the main body 102 is pushed outward, and is pressed or cut into the inner wall of the hole to form an anchor.

Another example is to use a T-shaped pin or the like (not shown), form a hole in the same manner as described above, fill with an epoxy resin or the like, and fix it by curing. . Further, a glass fiber mesh is stretched thereon, and a new cement mortar is applied as in the above-described example.

[0006]

[Problems to be solved by the invention]

 However, a disk-shaped washer having a small diameter of about 2 cm, a T-shaped pin, or the like has a problem that the area for holding down the surface of the old cement mortar layer is too small and cannot be sufficiently held down. In addition, since the metal is high in strength and only presses down a very small area in a spot-like manner, the disc-shaped washer or T-shaped pin does not function as a presser. There were many. Finally, there was a disadvantage that the old cement mortar could not be prevented from coming off.

In addition, it is troublesome and expensive to apply a glass fiber mesh before applying a new cement mortar for finishing, and the glass fiber mesh is not integrated with a disk-shaped washer or a T-shaped pin. Therefore, the newly applied new cement mortar was easy to peel off.

As a result of intensive studies on the above points, the present inventors have found that the above-mentioned problems can be completely eliminated by using a net-like peeling prevention device having a diameter of 10 cm or more made of a stainless steel thin plate. This led to the completion of the present invention.

[0009]

[Means for Solving the Problems]

 Therefore, the gist of the present invention is to remove cement mortar made of a stainless steel thin plate, formed into a net shape and formed into a low cone with a diameter of 10 cm or more, and provided with a stopper insertion hole at the center of the top. In the protective gear.

[0010] In the above configuration, it is desirable that a plurality of concentric annular portions centered on a top provided with the stopper insertion hole and a plurality of radial portions be formed in a net-like shape as a whole.

[0011]

[Embodiment of the invention]

 Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 is a plan view, FIG. 2 is an enlarged sectional view taken along line AA in FIG. 1, FIG. 3 is an explanatory view of use, and FIG. 4 is a sectional view of a wall surface after completion of the construction.

In FIG. 1, reference numeral 1 denotes a peeling prevention device. Further, the peeling prevention device 1 is made of a stainless steel thin plate. In this embodiment, the one having a thickness of 0.3 mm is used. Then, the stainless steel thin plate is formed into a net shape as a whole, and is formed into a low conical shape having a diameter of 10 cm or more (25 cm in the present embodiment). The diameter of the top 2 is 2 cm, and the stopper insertion hole 3 is provided at the center. The diameter of the stopper insertion hole 3 is 6 mm.

In the present embodiment, a plurality (two in the present embodiment) of concentric annular portions 4 centering on the top portion 2 provided with the stopper insertion holes 3 and a plurality of radial portions 5 are formed as a whole. Are meshed. The width of the annular portion 4 and the width of the radial portion 5 are each 5 mm.

Next, a method of using the present invention will be described. First, a hole (not shown) is drilled from the part where the old cement mortar layer 6 has come off to reach the skeleton concrete layer 7. 6a and 7a indicate holes, respectively. After that, the stopper 8 is inserted into the stopper insertion hole 3, and the stopper 1 is fixed by the stopper 8. In the illustrated example, the stopper shown in FIGS. 6 and 7 is used as the stopper 8. Finally, a new cement mortar 9 is applied on the peeling prevention device 1.

[0015]

[Effect of the invention]

 Since the present invention has a large area to hold down the surface of the old cement mortar layer as the base, it can be held down sufficiently over a wide range. In addition, since it is formed in a low conical shape, a small amount of force acts on the old cement mortar layer on the outer periphery, and it can be installed smoothly during construction. In addition, since it is different from a conventional product in which only an extremely small area is pressed in a spot-like manner, it does not occur that the part of the peeling prevention device is broken and does not function as a press.

Further, since the mesh is formed, the mesh acts like a glass fiber mesh, and it is not necessary to use a glass fiber mesh as in the related art. Therefore, it is possible to save the labor and cost of doing this. Then, the new cement mortar wraps the mesh portion and uses it as a core, and the anti-peeling tool and the new cement mortar are integrated. Therefore, the strength is increased and the tensile force is also increased, so that the new cement mortar can be surely prevented from falling off. In addition, since the strength of the portion to be held down on the surface is increased in this way, it is possible to reliably prevent the exfoliated portion of the old cement mortar layer below it from coming off.

[Brief description of the drawings]

FIG. 1 is a plan view of the present invention.

FIG. 2 is an enlarged sectional view taken along line AA in FIG.

FIG. 3 is an explanatory view of use of the present invention.

FIG. 4 is a sectional view of a wall surface after completion of construction using the present invention.

FIG. 5 is a perspective view of a conventional product.

FIG. 6 is a central longitudinal sectional view of a stopper.

FIG. 7 is a central vertical cross-sectional view showing a state in which a tip end of a stopper is expanded.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Peeling prevention tool 2 Top part 3 Stopper insertion hole 4 Annular part 5 Radial part 8 Stopper

Claims (2)

[Utility model registration claims] 1. A cement mortar peeling prevention device made of a stainless steel thin plate, formed in a net shape and formed into a low cone with a diameter of 10 cm or more, and provided with a stopper insertion hole at the center of the top. 2. The cement mortar peeling prevention device according to claim 1, wherein a plurality of concentric annular portions centered on a top provided with the stopper insertion hole and a plurality of radial portions are formed in a mesh as a whole. .