JPS59140015A - Manufacture of concrete shape - 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 [Technical Field] The present invention relates to a method for producing a concrete molded body used as a building material or the like.

[Background technology]

BACKGROUND OF THE INVENTION It is widely practiced to manufacture concrete products for building materials by roll-forming a kneaded material of a binder such as cement to obtain a molded product, and curing the molded product to harden it.

[Purpose of the invention]

This invention provides a concrete product that not only maintains physical properties similar to conventional ones, such as appearance, but also has increased strength, by inserting a reinforcing material as a core material into the molded product in order to obtain the concrete product as described above. The object of the present invention is to make it possible to increase productivity and reduce the amount of cement +-m.

[Disclosure of the invention]

In order to achieve such an object, the present invention provides an appropriate number of first forming apparatuses equipped with a hopper and an embossing roll, and a hopper and a flat forming roll on a receiving mold that moves continuously in one direction. and a second forming device equipped with a forming die are arranged at appropriate intervals, and reinforced to fit the four parts on the intermediate product of the concrete '°-1 molded body formed by the first forming device. The gist of the term is a term for a concrete molded product, which is characterized by supplying a shrine as a core material and then superimposing the surface layer of the concrete molded product on top of it in a second molding device. This will be described in detail below with reference to the drawings.

Figure 1 shows the concrete obtained by the method of this invention.
1. Hail the product. Concrete 1 contains reinforcement moon 2. Concrete I generally uses hydraulic cement as a binder and contains inorganic lightweight aggregate, etc., but resin may also be used as a binder, and the type is not limited. The reinforcement material is steel.

In addition to synthetic resin filaments or net-like bodies thereof, various shapes such as glass roving cloth are inserted in one or more layers.

According to the invention, such a product is molded as follows.

A mold 12 is placed on an endless conveyor 11 and is moving in one direction (the direction of the arrow). First and second molding devices 13 and 14 having the following structure are arranged on the receiving mold. The first forming device 13 includes a hopper 131 containing a kneaded material 15, and an embossing roll 132 which has a convex portion 33 on its circumferential surface that matches the shape of the reinforcing material and rotates in the direction of the arrow.
(See Figure 3). The second molding device also
It includes a hopper 141 containing a kneaded material 16, a flat forming roll 142 having a smooth peripheral surface and rotating in the direction of the arrow, and a forming die 143. In addition, when producing a molded object having a bent shape such as a roof tile, the circumferential surface of the three embossing rolls and the mold surface of the forming die are bent and undulating in the axial direction of the flat forming roll. Kneaded material 1
5 and 16 do not need to be in the same formulation.

As shown in the figure, an appropriate interval is placed between the first forming device 13 and the second forming device 14, and the reinforcing material 1 is placed between the first forming device 13 and the second forming device 14.
7 is supplied as a core material. That is, the kneaded material in the hopper 131 is formed onto the receiving mold 12 by the action of the embossing roll 1320 to become an intermediate product (lower half) 18 of the concrete compact, and is reinforced while proceeding toward the second forming device 14. 17 per month is supplied intermittently. Intermediate product 18
Since the concave portion 18I is formed on the surface by the convex portion 133 of the embossing roll, the reinforcing portion 1 supplied onto the intermediate product 18
7 fits perfectly into this four part 181. Therefore, there is no misalignment or unevenness. In the figure, 19 is a supply device such as a chuck for intermittently supplying reinforcing material. ? ili
The reinforcement enters the second forming device 14 together with the intermediate product. Here, the kneaded material 16 supplied onto the flat forming roll 14
2, and is finished formed by the forming die 143 to form the concrete molded body N (upper half) 2.
0 and is polymerized with the intermediate product 18. In this way,
Concrete 1 to bottom molding with core material is obtained. When this is cured and hardened, it becomes a concrete 1 product containing a core material.

The reinforcement can also be fed continuously.

When the reinforcing material has multiple layers, a plurality of first molding devices 13 are arranged, the reinforcing material is supplied between each first molding device, and finally the surface layer is polymerized by the second molding device 14. Molding is done.

There are no particular restrictions on the blending of the kneaded material. However, normally,
Dried concrete that is made by mixing ordinary aggregate, lightweight aggregate, etc. with hydraulic cement, has a low water mixing ratio (for example, 0.45 to 0.50), and does not have the fluidity of so-called poured concrete. It is. The maximum particle size of the aggregate is preferably about 151 m. This is because if it becomes larger than this, the surface smoothness will deteriorate and the filling of the reinforcing material gap will become worse. Since a core material is used, the amount of binding material may be reduced.

In order to consistently exhibit the reinforcing effect of the core material, it is necessary that the insertion position of the core material be constant. For this purpose, the lower layer (lower surface layer, middle layer) is first molded, and the core material is inserted after the core material insertion position is defined.

The recess 181 in the intermediate product very effectively prevents the core material 17 from shifting or slipping. After that, the upper surface layer is beautifully shaped.

〔Effect of the invention〕

Since this invention obtains a concrete molded body in this way, it is possible to obtain a one-crete product with excellent physical properties such as strength and appearance with good productivity and with a reduced amount of binder. Stir. Since the core material is inserted without any unevenness or deviation, the strength is improved.

[Brief explanation of drawings]

Figure 1 shows the concrete obtained by the method of this invention.
1. A cross-sectional view of the product, FIG. 2 is a schematic illustration of an embodiment of the invention, and FIG. 3 is a perspective view of an embossing roll. 11... Conhair 12... Receiving mold 131. ．． 13
2... Hopper and embossing roll of the first molding device 13, 141, 142, 143... Hong type of the second molding device 14. Flat forming roll, forming die 15.16.
... Kneaded product 17 ... Reinforcement material 18 ... Intermediate product 20
... Surface agent Patent attorney Takehiko Matsumoto Figure 1

Claims (2)

[Claims] (1) A mold that moves continuously in one direction is equipped with an appropriate number of first forming devices each equipped with a hopper and an embossing roll, and a second forming device equipped with a hopper, a flat forming roll, and a forming die. Place the devices at appropriate intervals and
To fit the recess on the intermediate product of the concrete formed body formed by the forming equipment of ? 1. A method for producing a concrete molded product, which comprises supplying a di-strength material as a core material, and then polymerizing the surface layer of the concrete molded product thereon in a second molding device. (2) Claim 1 in which the reinforcing material is intermittently supplied
Method for producing concrete molded bodies as described in Section 1.