JPS58213949A - Attachment of rubber molded product for preventing peeling of mortar - 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 The present invention provides a method for attaching a rubber molded product to a formwork when a dovetail-shaped notch is provided in the concrete frame in order to prevent the mortar from peeling off when mortar is placed in the concrete frame. It is about the method.

Generally, when applying mortar to concrete, the painted surface is cleaned and roughened, and then an adhesive is applied on top of it, and then mortar is applied, but this is especially true for external walls, which prevents cracks over a long period of time. Rainwater, debris, etc. may enter, causing the mortar to separate from the concrete surface and fall.
・There was a risk of

Therefore, there are various methods to prevent mortar from exfoliating on the outer wall surface, and one example is the method of the present invention, in which concrete is notched in a dovetail shape. The conventional way to secure the rubber molded product was by nailing at least the four corners of the rubber molded product to the formwork, but with this nailing, it was necessary to stop the edges of the rubber molded product, and since the rubber molded product is dovetail-shaped, the edges were not nailed. If it is held in place, the rubber molded product will be restrained by nails during demolding, causing it to deform.One drawback is that it will remain stuck in the concrete and cannot be reused with the formwork, as it remains stuck to the formwork. Furthermore, even if you use a crowbar to remove the rubber molded product that has dug into the concrete after dismantling the formwork, there is the disadvantage that the notch in the concrete that has been formed into a dovetail shape will be damaged. Because it is expensive, it not only increases material and labor costs, but also affects the overall process and has the disadvantage of being a heavy burden on the site.

SUMMARY OF THE INVENTION An object of the present invention is to provide a method for attaching a rubber molded product, which eliminates the above two drawbacks and allows the rubber molded product to be easily removed from the mold while being fastened to the mold.

The gist of the present invention is to provide a hole 3 for screw insertion in a formwork 1 and a rubber molded product 1, to attach the rubber molded product to the concrete pouring surface 7 of the formwork 1, and to form a rubber molded product. This is a method for attaching a rubber molded product to prevent mortar peeling, characterized in that a bisque is inserted from the product side and the formwork and the rubber molded product are fastened with thumb screws.

The present invention will be explained below with reference to embodiments shown in the drawings.

Figure 1 is a cross-sectional view of the rubber molded product attached to the formwork before concrete pouring, and Figure 1 is a cross-sectional view of the formwork and rubber molded product removed after concrete pouring. .

A hole 3 for inserting a screw is provided approximately in the center of the rubber molded product and at an appropriate location on the formwork, and the formwork,! A synthetic rubber molded product with a dovetail shape and a recess on the back side is mounted on the concrete pouring surface 7 of The formwork λ and the rubber molded product are fastened together using a thumbscrew nut s by inserting a round-head screw into the mold.

In the present invention, as mentioned above, the formwork and the rubber molded product are fastened with seven round-head screws, so when the formwork is removed, the screws of the rubber molded product are first pulled against the formwork. The rubber molded product is separated from the concrete first, and as the Pacom molded product deforms, the dovetail-shaped part (g), which has a dovetail-shaped protrusion with an open tip, also separates from the concrete, and the rubber molded product becomes integral with the formwork. The mold was demolded immediately, and there was no damage to either the formwork or the rubber molded product.

In addition, since the concrete can maintain its dovetail shape normally, when mortar is applied on top of it, the mortar bites into the dovetail cutout and becomes integrated with the concrete, preventing the mortar from peeling off and falling. These rubber molded products may be arranged at appropriate intervals.

In addition, since the rubber moldings are already fastened to the demolded formwork, there is no need to reinstall them each time, and you only need to prepare a small amount of spare rubber moldings, making it easier on-site both economically and in terms of construction time. It is something that can be managed.

Thumb screw nuts are also used to fasten the rubber molded product to the formwork, so it can be fastened elegantly without the need for special tools.

[Brief explanation of the drawing]

The drawings show one embodiment of the invention. Fig. 1 is a cross-sectional view of a rubber molded product fastened to a formwork with screws, and Fig. 2 is a cross-sectional view of the formwork and rubber molded product removed from the mold after concrete pouring. /...Rubber molded product Ω...Form frame 3...
Hole for screw insertion G... Screw S...
・Thumb screw nut Otsu...Washer metal 7...
・Concrete pouring 1 pitch g...
Ari no cedar...Funkri-÷ Figure 1 Figure Z

Claims (1)

[Claims] A hole 3 for screw insertion is provided through the formwork and the rubber molded product, and the rubber molded product is placed on the concrete pouring surface 7 of the formwork.
and insert the screws from the side of the rubber molded product/formwork λ.
A method for attaching a rubber molded product for preventing mortar flaking, characterized in that the rubber molded product and the rubber molded product are fastened with a thumb screw nut S.