JP2001246611A - Method for manufacturing block having rocklike surface - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for manufacturing a block of which the surface is rocklike by using a form. SOLUTION: Concrete C is placed onto a bottom form 1 of which the inner surface is recessed, a top form 2 of which the inner surface is formed corresponding to a rocklike surface is superimposed on an upper part of the concrete and fixed by pressing down. After curing the concrete, the top and bottom forms 2 and 1 are released. An air vent 3 and an adjusting hole are formed to the top form 2. Blocking covers 5 and 6 can be fitted to the adjusting hole.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a rocky surface, particularly a rock-shaped block, used for a coast, a harbor, a fishing port, a river, a sabo or the like.

[0002]

2. Description of the Related Art In general, a method of manufacturing a concrete block having a rock surface is manufactured by forming a form so that the rock or the form of the rock forms a bottom surface, casting concrete in the form, and then hardening the concrete. Demolded, inverted and manufactured. In addition, a method has been implemented in which a unit having a rock-shaped surface is produced in advance, and the unit is bonded or embedded on the surface of the block.

The present invention has been developed to provide a simple and easy manufacturing method by eliminating the manufacturing steps.

[0004]

According to the present invention, concrete is cast on a lower formwork having a concave inner surface, and an upper formwork having an inner surface formed on a rocky surface is overlaid and pressed on the concrete. After the concrete is hardened, the upper and lower forms are released. A plurality of air vent holes are formed in the upper mold frame, and an adjusting hole through which concrete can be charged or removed later is formed.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A lower mold 1 and an upper mold 2 are made of a resin mold such as FRP or a dropped steel plate. The lower mold 1 has a concave inner surface, and the upper mold 2 has an inner surface corresponding to a rock-like surface.

First, concrete C is cast on the concave inner surface of the lower mold 1 in a raised state, and then the upper mold 2 is overlapped and pressed down so that the inner surface is in contact with the upper surface of the concrete C. The bolts 3 are inserted through the holes, and the nuts or clamps are fixed by tightening or the like. After the concrete C is hardened, upper and lower air vent holes 4 are formed. If necessary, adjustment holes 5 for replenishing or removing concrete are formed. The closing lids 5 and 6 can be fitted respectively.

Since the unevenness or the uneven pattern corresponding to the rock-like surface is formed on the inner surface of the upper mold frame 2, the surface of the rock-like pattern can be formed on the hardened concrete surface.

[0008]

According to the present invention, the upper mold has an inner surface having a pattern corresponding to a rock-like surface and irregularities, so that it can be embossed on an uncured concrete surface. A ready-to-use block can be provided by removing the mold.

Further, air bubbles in the concrete can be removed by the air vent holes of the upper frame, and the occurrence of nests can be prevented. In addition, the amount of concrete can be increased or decreased by using the adjusting holes, and the inner surfaces of the lids can be formed in a shape continuous with the rock pattern of the upper mold.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a manufacturing process.

FIG. 2 is a longitudinal sectional view of the next step.

FIG. 3 is a longitudinal sectional view of the next step.

FIG. 4 is a longitudinal sectional view of the next step.

FIG. 5 is a longitudinal sectional view of the next step.

[Explanation of symbols]

C: Concrete, 1: Lower mold frame, 2: Upper mold frame, 3: Air vent hole, 4: Adjustment hole, 5, 6: Lid

Claims (2)

[Claims] 1. Concrete is cast on a lower formwork having a concave inner surface, and an upper formwork whose inner surface is formed corresponding to a rocky surface is placed on top of the concrete, pressed down and fixed, A method for producing a surface rock-shaped block, comprising removing the upper and lower molds after curing. 2. The method according to claim 1, wherein an air vent hole and an adjustment hole are formed in the upper mold frame.