JP2856644B2 - Method of manufacturing concrete foundation - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of forming a concrete foundation for installing mechanical equipment on an existing floor in a factory or the like.

[0002]

2. Description of the Related Art In a factory or the like, when constructing a concrete foundation for installing mechanical equipment on an existing concrete floor surface, conventionally, the floor surface is detached and the surface is made uneven to some extent so that a fixing effect can be obtained. After that, concrete was poured in. However, this conventional method involves a large amount of dust due to hanging work, and it is almost impossible to adopt it in a place where dustproofness is required.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the conventional method and to provide a method of manufacturing a concrete foundation which can be easily adopted even in a place where dust protection is required. I do.

[0004]

In order to achieve the above-mentioned object, the present invention provides a method for constructing a concrete foundation on an existing floor surface by spraying pebbles on the floor surface and further using a synthetic resin adhesive. And a concrete foundation is built on the floor after the adhesive is solidified and the pebbles are fixed to the floor. It is also possible to apply a synthetic resin adhesive to the floor surface, further spray pebbles, and build a concrete foundation after the adhesive is solidified and the pebbles are fixed to the floor surface. When the floor surface is painted with a synthetic resin paint, it is preferable to apply an adhesive similar to the paint.

The present invention can be preferably applied when the existing floor is made of concrete, asphalt, or the like.

[0006] Such pebbles to be sprayed on the existing floor construction area are like gravel mixed with cement when constructing a concrete structure, and those having a size of about 1 to 20 mm are directly above. Are sprayed such that the total projected area when viewed from above is about 0.3 to 0.8 times the unit area of the floor surface. It is preferable to clean the floor before spraying the pebbles.

Next, an epoxy resin-based, polyester-based, polyurethane-based or other synthetic resin-based adhesive is applied to the floor surface on which the pebbles are scattered by spraying, coating, pouring, or the like. The applied thickness is 1/6 to 3 of the size of the pebble
About 2/2 is better. When the adhesive dries and solidifies, the pebbles are fixed to the floor surface, thereby forming irregularities on the floor surface. In addition, when the floor surface is painted with a synthetic resin paint, if an adhesive similar to the paint is used, the pebbles can be more securely fixed. For example, when being coated with an epoxy-based paint, an epoxy-based adhesive is used.

Next, concrete is driven into the floor on which the pebbles are fixed, and a concrete foundation is built. The construction itself may be performed by a normal method such as a method using a formwork and pouring concrete into the formwork. At this time, the pebbles increase the joining strength between the existing floor surface and the foundation to be built. It is preferable that concrete contains gravel than sand alone in terms of strength.

[0009]

According to the present invention, when a concrete foundation is built on an existing floor such as concrete, pebbles are sprayed on the floor and a synthetic resin-based adhesive is further applied to solidify the adhesive. After the pebbles are fixed to the floor, the concrete foundation is built on the floor, and the work of removing the existing floor as in the conventional method is not necessary. Therefore, there is almost no fear of generation of dust, and it can be easily adopted in a factory or the like where dustproofness is required. Manufacturing costs are also reduced because no hanging work is required. Moreover,
Since a large anchoring effect is obtained by the pebbles, the bonding strength between the existing floor surface and the built foundation is high, and it can be sufficiently used as a base for mechanical equipment accompanied by large vibration.

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Toshiki Kawamura E15, Tsutsui, Matsumae-cho, Iyo-gun, Ehime Prefecture Inside the Ehime Plant Co., Ltd. Ehime Plant Co., Ltd. (58) Field surveyed (Int. Cl. ⁶ , DB name) E02D 27/44

Claims (3)

(57) [Claims] When building a concrete foundation on an existing floor, pebbles are sprayed on the floor, a synthetic resin adhesive is applied, and the adhesive solidifies to fix the pebbles to the floor. A method of manufacturing a concrete foundation, comprising laying a concrete foundation on the floor after the work is performed. 2. When a concrete foundation is built on an existing floor surface, a synthetic resin adhesive is applied to the floor surface, pebbles are further dispersed, and the adhesive solidifies to fix the pebbles to the floor surface. A method of manufacturing a concrete foundation, comprising laying a concrete foundation on the floor after the work is performed. 3. The floor is painted with a synthetic resin paint.
3. An adhesive similar to the paint is applied.
Manufacturing method of concrete foundation.