JPH072566A - Production of glass fiber-reinforced concrete plate and apparatus therefor - Google Patents

Abstract

PURPOSE:To provide a high-quality glass fiber-reinforced concrete plate at a low cost. CONSTITUTION:A pair of base units 6 and 7 are joined to each other so as to form an expandable and contractible bottom base 1 and a frame unit 2 is vertically set to the upper surface of the base unit 6 put on the base unit 7 at the joint side end part. A vertically movable partition plate 10 is inserted into the frame unit 2 from the above to divide the inside of the frame unit 2 into two front and rear sections and a mat-shaped unit 12 composed of glass fiber is put in one of the above-mentioned sections in parallel to the above partition plate 10. While concrete mortar is poured into the other section from the above, the above partition plate 10 is gradually drawn up. Thereby, the concrete mortar is allowed to fill the frame unit 2 from the lower part toward the upper part and the above glass fiber unit 12 in the frame unit 2 is buried.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for manufacturing a glass fiber reinforced concrete plate which is mainly used as an exterior plate for a building or the like.

[0002]

2. Description of the Related Art Conventionally, as a method for producing a glass fiber reinforced concrete slab of this type, a premix method in which glass fibers are kneaded in advance in concrete mortar and placed, or a method in which glass fibers are sprayed together with concrete mortar and roller compaction is performed. Generally, a spray method or the like in which the surface finish is performed after adding

[0003]

Here, in these methods for producing a glass fiber reinforced concrete slab, the following two points can be mentioned as the most important factors that can further strengthen the concrete slab.

That is, there is a problem of how to increase the content ratio of the glass fibers and to enhance the reinforcing effect without impairing the compactness of the concrete, and a problem of the orientation direction of the glass fibers filled in the concrete mortar. is there.

In view of these problems, as compared with the premix method in which the orientation of the glass fibers filled in the concrete mortar is three-dimensionally random,
The spray method is excellent in that it approaches a two-dimensional random state and a higher reinforcing effect is obtained, but even with this spray method, in terms of workability that requires spraying work, roller compaction, and surface finishing. Requires a lot of man-hours,
In addition, the loss of glass fiber during spraying is large and not only a large amount of glass fiber is needed to reinforce the same strength, but also the skill of spraying is required and the product yield must be low. There was a problem.

Therefore, a mortar injection method has been proposed to address these problems.

The outline of the mortar injection method will now be described. In the mortar injection method, concrete mortar kneaded in advance with a mortar mixer is transferred to the pressure feed pump side, and then pressure is applied to the pressure feed pump to gradually perform planographic printing. Concrete mortar is press-fitted into a mold having a shape, and the concrete mortar is pressure-penetrated from above to below the mat-shaped glass fiber stretched in the mold.

According to this mortar injection method, almost perfect two-dimensional arrangement can be obtained as the arrangement direction of the glass fibers, and the loss of the glass fibers is small, and a high reinforcing effect can be obtained only by the pressure injection work. There are advantages.

However, the following points are raised as problems of this mortar injection method. That is, a pressure pump for press-fitting the concrete mortar into the mold is required, and the mold is pressed more than necessary by the press-fitted concrete mortar, which causes a problem in mold strength. The work of assembling and demolding the formwork is extremely troublesome to hold the mortar, and furthermore, the concrete mortar is filled between the glass fibers by filling the concrete mortar on the glass fibers arranged in the lateral direction. Is a problem that the grain size of sand must be selected in detail, and that the glass fiber is damaged by the weight of the concrete mortar.

Thus, the present invention was devised in order to solve the above-mentioned conventional problems, and good products can be manufactured with simple equipment without the need for mechanical equipment such as a press-fitting pump, and a high degree of skill is required. It is an object of the present invention to provide a manufacturing method and a manufacturing apparatus of a glass fiber reinforced concrete plate that can improve the product yield without the need for work and can provide a glass fiber reinforced concrete plate of good quality at low cost. is there.

[0011]

In order to achieve the above object, the present invention is configured as follows. That is,
According to the present invention, a pair of substrate units 6 and 7 are connected to each other in an expandable and contractible manner to form a bottom plate substrate 1, and a mold body 2 is provided above an end portion of the substrate unit 6 connected to the upper side on a side of a connection side with the substrate unit 7. Standing upright,

A partition plate 10 which can be moved up and down is inserted into the mold frame 2 from above so as to divide the mold frame 2 into two front and rear space portions, and one of the space portions is provided. The glass fiber body 12 formed in a mat shape is arranged in a direction parallel to the partition plate 10,

While the concrete mortar is being poured from above the other space, the partition plate 10 is successively raised so that the concrete mortar is filled from the lower side to the upper side of the mold body 2, and the glass inside the mold body 2 is filled. It is configured by embedding the fibrous body 12, or

The bottom plate substrate 1 formed by connecting a pair of substrate units 6 and 7 to each other in a stretchable manner and the substrate unit 7 of the substrate unit 6 connected to the upper side are erected above the connection side ends. Formwork 2 and

A vertically slidable partition plate 10 which is inserted into the mold frame 2 and divides the mold frame 2 into two front and rear spaces, and the partition plate 10 in one of the space parts.
A glass fiber body 12 formed in a mat shape and arranged in parallel with

By sequentially raising the partition plate 10, concrete mortar poured from above the space where the glass fiber body 12 is not arranged is filled from below the mold body 2 to above. In addition, the glass fiber body 12 in the mold body 2 is sequentially embedded from the lower side to the upper side.

[0017]

According to the manufacturing method of the present invention, of the two space portions in the mold body 2 partitioned by the partition plate 10, one partition space 10 is successively filled with concrete mortar from above. When raised, the concrete mortar easily fills and penetrates from below the glass fiber body 12 disposed in the other side space along the continuous strand direction, and suppresses the lifting of the glass fiber body 12 and Since there is no fear that bubbles will be generated in the concrete mortar that gradually rises from the beginning, the concrete placing work can be easily completed.

Further, according to the apparatus of the present invention, concrete mortar can be injected from one side of the upper edge of the mold body 2, and the partition plate 12 can be inserted into and removed from the mold body 2 in a simple structure. It is possible to produce a good quality glass fiber reinforced concrete slab.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on the embodiments shown in FIGS. In the drawings, reference numeral 1 indicates a bottom plate substrate having a substantially rectangular shape.

The bottom plate substrate 1 comprises a pair of substrate units 6, 7
The pair of substrate units 6 and 7 are configured to be slidable with respect to each other, and the bottom plate substrate 1 is configured to be expandable and contractable.

The form frame 2 is erected on the bottom plate substrate 1. That is, the mold body 2 is erected at the end of the pair of substrate units 6 and 7 constituting the bottom plate substrate 1 on the connection side end of the substrate unit 6 connected to the upper side. By standing upright in this way, it is also possible to perform the work in a state in which it is laid down sideways as shown in FIGS.

Further, as shown in the figure, the mold body 2 is in the shape of a rectangular body having a vertically long width and a thin shape, and has a flat front plate 3 and
The rear plate 4 and the side plates 5 and 5 are constituted by a basic template 8 having a substantially concave cross section.

The basic template 8 is erected substantially vertically on the bottom plate substrate 1, and the front plate 3 is attached so as to cover the opening of the basic plate.

Further, the front plate 3 is attached to the bottom plate substrate 1 so as to be rotatable about the bottom plate substrate 1 with its lower end portion as a rotation axis. Also, with respect to the basic template 8, the rear plate 4 and both side plates 5 and 5 arranged on both sides thereof are rotatably attached at one end side thereof.

Guide grooves 9, 9 are formed inside the side plates 5 so that the inner surface thereof can be divided into two, and both ends of the partition plate 10 are loosely fitted in the guide grooves 9, 9. The partition plate 10 is configured to be movable in the vertical direction of the mold body 2.

Further, the upper edge side of the front plate 3 is constructed so as to be curved outward, whereby the mortar injecting hopper portion 11 is provided. Here, the partition plate 10 is inserted into the assembled mold body 2 from above.

This partition plate 10 has a hopper 11 inside the mold body 2.
It is sufficient if it can be divided into a side and a back side thereof. In manufacturing the glass fiber reinforced concrete plate with the above configuration, first, the basic mold plate 8 formed by the rear plate 4 and the side plates 5, 5 and further the front plate 3 are assembled to form the mold body 2. Form.

Then, the frame 2 is erected on the bottom plate substrate 1. Further, the partition plate 10 is inserted into the standing mold frame 2 to divide the mold frame 2 into two space portions.

Then, the glass fiber body 12 is disposed on the back side of the inserted partition plate 10. The glass fiber body 12 is formed by bonding continuous strands of glass fibers with a required binder to form a planar two-dimensional mat-like body.

Next, concrete mortar is injected from the mortar injection hopper 11 part, and mortar injection is started so that the concrete mortar is filled in the front space defined by the partition plate 10.

At this time, the partition plate 10 is pressed to the back side by the concrete mortar, but since the partition plate 10 is regulated by the guide grooves 9 and 9, the glass fiber body 12 disposed on the back side is There is no danger of being compressed and damaged.

Next, when the partition plate 10 is gradually raised, the concrete mortar is placed in the space in which the glass fiber body 12 is disposed through the gap formed between the lifted partition plate 10 and the lower surface of the formwork 2. Penetrates into the department.

That is, the concrete mortar easily permeates and rises from the lowermost part of the glass fiber body 12 arranged on the back side of the partition plate 10 along the glass fiber strand without applying pressure, and the particle size of sand is different from the conventional one. There is no need to consider such matters.

At this time, in the concrete mortar that permeates and rises from the lower gap, there is a very low possibility of bubbles being generated, and it is not necessary to apply the vibration by the vibrator to eliminate the bubbles as in the conventional case.

Moreover, the glass fiber body 12 disposed in the mold body 2 is in a state in which a weight is attached downwardly to prevent the glass fiber body 12 from being lifted up, which may cause deformation and distortion of the glass fiber body 12. Absent.

That is, a glass fiber of good quality can be easily obtained by simply injecting concrete mortar into the formwork 2 and raising the partition plate 10 without requiring the skill required in the conventional spraying method. It is possible to obtain a reinforced concrete slab.

The glass fiber reinforced concrete slab molded as described above is smooth on both the front and back surfaces, and one surface is troweled or unsmoothed by roller rolling as in the conventional method. There is no disadvantage, and the repair work after demolding can be greatly reduced.

Further, the mold frame 2 can be laid down on the side when the mold is removed so that the mold removing operation can be performed.

Further, since the mold frame 2 is in the vertically long state, a large number of mold frames 2 ... Can be erected in a narrow space, and the whole frame is covered even when the above curing is performed. It is possible to perform effective curing with less heat.

[0040]

As described above, according to the method of the present invention, a glass of good quality can be easily obtained by a simple operation of injecting mortar and gradually raising the partition plate without requiring any skill. A fiber reinforced concrete can be provided.

Further, according to the apparatus of the present invention, it is possible to effectively use concrete space and perform concrete pouring and curing efficiently without requiring special mechanical equipment.

[Brief description of drawings]

FIG. 1 is a schematic explanatory view of an embodiment of the present invention.

FIG. 2 is a cross-sectional explanatory view of an example.

3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is a diagram (No. 1) for explaining the use of the embodiment.

FIG. 5 is a second explanatory diagram of the use of the embodiment.

FIG. 6 is an explanatory diagram (No. 3) of use of the embodiment.

FIG. 7 is an explanatory view (No. 4) of use of the embodiment.

FIG. 8 is an explanatory view (No. 5) of use of the embodiment.

[Explanation of symbols]

 1 Bottom Plate Substrate 2 Form Frame 3 Front Plate 4 Rear Plate 5 Side Plate 6 Board Unit 7 Board Unit 8 Basic Plate 9 Guide Groove 10 Partition Plate 11 Hopper 12 Glass Fiber Body

Claims (2)

[Claims] 1. A side of a board unit (6) connected to an upper side of the board unit (6) connected to a pair of board units (6, 7) to extend and contract to form a bottom plate board (1). A mold body (2) is erected above the end portion, and a partition plate (10) movable up and down is inserted into the mold body (2) to insert the mold frame (2) into front and rear portions. The glass fiber body (12) formed in a mat shape is arranged in parallel with the partition plate (10) in one of the two space portions, and the glass fiber body (12) is placed in parallel with the other space portion from above. While injecting mortar, the partition plate (10) is sequentially raised so that the concrete mortar is filled from the lower side to the upper side of the mold body (2), and the glass fiber body (in the mold body (2) ( 1
2) A method for producing a glass fiber reinforced concrete slab, which comprises burying. 2. A bottom plate substrate (1) formed by elastically connecting a pair of substrate units (6, 7), and the substrate unit (7) of the substrate unit (6) connected to the upper side. Form body (2) standing upright on the connection side end
And a partition plate (1) which is inserted into the mold body (2) and which is slidable up and down and divides the mold frame (2) into two front and rear spaces.
0) and a glass fiber body (12) formed in a mat shape and arranged in parallel with the partition plate (10) in the space on one side, the partition plate (10) By sequentially raising the above, the concrete mortar injected from above the space portion where the glass fiber body (12) is not arranged is filled from below the mold body (2) to above, and at the same time, the mold An apparatus for producing a glass fiber reinforced concrete slab, characterized in that the glass fiber bodies (12) in the body (2) are sequentially buried from the lower side to the upper side.