JPH0423712B2 - - Google Patents

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention is applicable to the storage of concrete products such as concrete lids, bank protection blocks, flat plates, pedestrian road boundary blocks, site boundary blocks, and other concrete products. It is about the method.

(Prior art) After manufacturing, this type of concrete products are stored either vertically or horizontally, but when concrete products are stacked closely together, water can accumulate on the surface due to water spraying, rainwater, etc. over a long period of time. If it accumulates and stays wet for a long time, the surface of the concrete product will darken and become uneven in color, worsening the product's appearance. To prevent this, it is necessary to provide space between the concrete products to improve ventilation and prevent the concrete from remaining wet for a long time.

In the prior art, square timbers or vinyl ropes were sandwiched between concrete products for this purpose, but this method left traces of the square timbers or ropes on the surface of the product, deteriorating the quality of the product, and This has the disadvantage that the product may be damaged by hitting the corners of the product, and that the stacking process is troublesome because square timbers or ropes are sandwiched between the products.

(Object of the Invention) The object of the present invention is to store concrete products that do not cause color unevenness on the surface, do not leave traces of square timbers or ropes, and can be easily loaded with products. The goal is to provide a way to do so.

(Structure of the Invention) The method for storing concrete products of the present invention involves inserting a plurality of spacers into the concrete surface in a spot shape after finishing the concrete surface in the formwork and before it hardens, and removing the concrete product from the formwork. The purpose is to store the concrete products by stacking them after they have been removed and leaving gaps between them using these spacers. In this way, the plurality of spacers are permanently fixed to the surface of the concrete product and become part of it, so that the appearance of the concrete product is not deteriorated and color unevenness does not occur during storage.

(Embodiment) An embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 shows an embodiment of the method of the present invention, in which the concrete product 10 is shown to be a concrete slab. be. This concrete product 10 is manufactured by pouring concrete 10A into a formwork 12, shaking it to increase the density of the concrete, and then finishing the concrete surface 10B with a trowel.

In the method of the present invention, a plurality of spacers 14 are inserted and fixed into the concrete surface in the form of spots after the concrete surface is finished and before it hardens, preferably immediately after finishing. Therefore, spacer 1
4 can be easily attached to the concrete product 10. As shown in FIGS. 2A and 2B, this spacer 14 consists of a pin 16 made of metal, plastic, rubber, etc. and has a head 16a projecting from the concrete surface 10B.
6 is a concrete surface 10 on the lower surface of the head 16a.
It is preferable to have a collar 16b that bites into B. In this collar 16b, the spacer 14 is the concrete product 1.
Helps to be stably installed at 0. Furthermore, the second
Although head 16a is shown to be hemispherical in the figures, it may have any desired shape. Further, the spacer 14 may be a pin without a collar as shown in FIGS. 3A and 3B, or may be a short linear body as shown in FIG. 3C. After the concrete has hardened within the formwork 12, the concrete product 10 is removed from the formwork 12. FIG. 4 shows a concrete product 10 manufactured in this manner.

A plurality of concrete products 10 manufactured in this manner are stored vertically as shown in FIG. 5 or horizontally as shown in FIG. 6. At this time, since the plurality of concrete products 10 are spaced apart by the spacers 14 attached in a spot shape, ventilation between them is improved and color unevenness does not occur. In addition, since the spacers 14 are permanently fixed to the concrete product 10 and become a part thereof, the appearance is not deteriorated, and in particular, these spacers have a non-slip effect when stacked, and furthermore, the spacers 14 have a non-slip effect when stacked. When installing on the ground, the spacer digs into the ground and helps to stably install the concrete product.

(Effects of the Invention) According to the present invention, as described above, by using a plurality of spacers installed in a spot shape, a concrete product can be stored in a well-ventilated manner without leaving any traces that deteriorate its appearance. A product of uniform quality can be obtained, and since the spacers are arranged in a nearly spot-like manner, the watering that is performed to reinforce the strength can be evened out. Furthermore, the spacer is easy to install because it can be installed by simply inserting it into the concrete product before it hardens, and since the spacer is permanently fixed to the concrete product, it has a non-slip effect during storage. In addition, it is useful for stably attaching concrete products to the ground, and since the product can be stacked as is during storage, it has the practical benefit of facilitating the stacking process.

[Brief explanation of drawings]

Fig. 1 is a sectional view showing the state in which a concrete product is manufactured by the method of the present invention, Figs. 2 A and B are a front view and a plan view of an example of a spacer used in the method of the present invention, and Figs. 3 A to C. 4 is a front view of different examples of spacers, FIG. 4 is a perspective view of concrete products, and FIGS. 5 and 6 are front views of concrete products in a stacked state. 10... Concrete product, 12... Formwork, 1
0A...Concrete, 10B...Concrete surface, 14...Spacer, 16...Pin, 16a
...Head, 16b...Tsuba.

Claims (1)

[Scope of Claims] 1. After concrete is poured into a formwork and subjected to vibration, the concrete surface exposed from the formwork is finished hardened to produce a concrete product, and after the concrete product is removed from the formwork, it is stacked and stored. In a method for storing concrete products, after the concrete surface is finished and before it hardens, a plurality of spacers protruding from the concrete surface are inserted into the concrete surface in a spot shape, and the plurality of spacers allow the concrete products to be mutually separated. A method for storing concrete products characterized by stacking them at intervals. 2. The method for storing concrete products according to claim 1, wherein the spacer comprises a headed pin having a flange that bites into the concrete surface. 3. The method for storing concrete products according to claim 1, wherein the spacer is made of a short linear body. 4. The method for storing concrete products according to claims 1 to 3, wherein the spacer is made of metal, plastic, or rubber.