JPS60129210A - Fiber reinforced cement board - 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 The present invention relates to a fiber-reinforced cement board, particularly a perforated fiber-reinforced cement board, which incorporates a fiber frame obtained by stretching long Hh fibers in a frame body.

Previously, there were cement boards that had holes in them to reduce weight, but the cement parts other than the holes were reinforced with reinforcing bars or piano wire. For this reason, there is a limit to the reinforcement of the cement part, and it has not been possible to further reduce the weight by making the hole larger or increasing the number of holes.

The present invention has been made to solve these conventional problems, and its purpose is to reduce the weight of the cement board while preventing the decrease in strength caused by providing through holes within the wall thickness of the cement board. The purpose of the present invention is to provide a fiber reinforced cement board.

That is, in order to achieve this object, the fiber-reinforced cement board of the present invention has a cement board in which through holes are formed in the wall thickness.
This fiber-reinforced cement board has a built-in fiber frame in which long fiber lines are stretched, and the fiber frame is built in such a state that the through hole is surrounded by the fiber stretched surface by the long fiber lines.

Here, the length 41AM wire in the present invention refers to the minimum length sufficient to stretch the required spacing, the maximum length sufficient for one or more windings, and the minimum length sufficient for winding the wire once or multiple times. refers to fibers with a length that can be For example, in the case of glass fiber, it refers to things like strands and rovings.

Stretching refers to the state in which the long fiber wire is stretched around the frame body by winding, hanging, tying, gluing, or any other method, for at least two According to #J [reinforced cement board of the present invention constructed as described above, the long fiber wires are passed between the frame materials of the book, even though the weight is not reduced by the through holes, the long fiber wires Since the through hole is surrounded by the fiber-strung surface, a fiber-reinforced cement board with improved strength can be obtained due to the reinforcing effect of the long fiber wire.

Embodiments of the present invention will be described below with reference to the drawings.

In describing each embodiment, the same reference numerals are used for the same components in the drawings.

FIG. 1 is a cutaway perspective view of a fiber-reinforced cement board A according to a first embodiment of the present invention, and FIG. 2 is a perspective view of a fiber frame 1 built into the cement board.

# To make Jllll frame 1, first create the reinforcing bar frame 2 as the frame body.
, main reinforcement a, distribution reinforcement 1], auxiliary reinforcement in the thickness direction c+, c
Form from 2. Next, alkali-resistant glass fibers as long fiber lines 3 are stretched between the auxiliary reinforcements elleZ in the direction of the operator's hand of the product to form a fiber stretching surface 5a parallel to the through hole 4.

Further, the long fiber line 3 is wound several times in the width direction of the product between the main reinforcements a, a, a, a, to form a fiber tensioning surface 51).

There are two methods for manufacturing fiber-reinforced cement boards: 1)
One is to set the fiber frame 1 in the formwork 6a, insert the formwork 6a' for forming the through hole into the fiber frame 1 (Fig. 3-A), and then pour concrete as the cement mixture 7. Then, finish the surface with a trowel (Figure 3-B).

The other method is to set the fiber frame 1 in the vertical forming frame 61) and insert the frame 61)' with the vJ through hole into the fiber jAE frame 1 (Fig. 4.1-a). Next, concrete as the cement mixture 7 is poured from the thickness direction of the fiber-reinforced cement board A (Fig. 4 - opening). In this case, the surfaces of the tin-reinforced cement board A and the surface of the formwork are perfectly clean.

5th 1 is a cutaway perspective view of a fiber 1F reinforced cement board B which is a second embodiment of the present invention.

The fiber-reinforced cement board B of this embodiment has two through holes 4, 4 formed by a delicate tension surface 5c formed by winding meta-aramid fibers as long fiber lines 3 in a direction perpendicular to the hole direction.
It is a structure that surrounds the

Therefore, although the weight is considerably reduced by the two elongated through holes 4, 4, the fiber reinforced cement board is strong in terms of strength due to the reinforcement of the fiber frame 1.

FIG. 6 shows an embodiment of the fiber frame 1 built into a fiber-reinforced cement board. In this case, the difference from the fiber frame 1 of the first embodiment is that the fiber tensioning surface 5a between the auxiliary reinforcements el and cf is penetrating. It is formed by long fiber lines 3 parallel to the hole direction of the hole 4 and long fiber lines 3 perpendicular to the hole direction.

FIG. 7 shows an embodiment of the pond of the fiber frame 1 built into the fiber reinforced cement board.

To make the fiber frame 1, first, a rectangular reinforcing frame 2a is made, and meta-aramid fibers as the long fiber lines 3 are stretched on this to surround the through holes in a square shape on the fiber stretching surface. Three fibers 1a are incorporated and fixed to form the fiber frame 1 as a whole.

The embodiments of the present invention have been described above with reference to the drawings, but
The specific configuration of the present invention is not limited to the embodiments described above.

In the examples, alkali-resistant glass fibers and meta-aramid fibers were used as the long fibers, but para-aramid fibers and carbon fibers may also be used.

In addition to concrete, lightweight and foamed concrete, cement mixtures may also be polymer cement mortars, mortars containing short fibers of glass and steel.

Regarding the fiber frame 1 shown in FIG. 7, the long fiber line may be wound around the outer periphery a plurality of times in the width direction as in the first embodiment.

Note that when alkali-resistant glass fibers are used as long fiber wires, deterioration occurs due to the alkali in the cement mixture, but as a means to prevent this, the alkali-resistant glass fibers are immersed in an epoxy resin bath and stretched around the frame. Alternatively, create a fiber frame by stretching a potash-resistant glass fiber on the frame body, and apply it to an epoxy 1H1 oil tank.Alternatively, apply epoxy resin to the fiber frame by brushing. A method may also be used.

Regarding the manufacturing method of the fiber-reinforced cement product A in the first embodiment, for example, the mold 6a
After forming a thin concrete layer on the surface, the fiber frame 1 may be placed on top of the concrete layer, and the through-hole formwork may be inserted into the fiber frame 1.

In addition, after forming the fiber-reinforced cement board, insulating holes are placed in the through holes.
When filled with sound-absorbing materials, fiber-reinforced cement boards exhibit insulation and sound-absorbing effects.

Further, the shape of the through holes in the fiber-reinforced cement board is not limited to square, circular, oval, polygonal, etc., and the number of holes is also not limited.

[Brief explanation of the drawing]

Fig. 1 is a cutaway perspective view of a fiber-reinforced cement board A according to the first embodiment of the present invention, Fig. 2 is a perspective view of a fiber frame built into the cement board A, and Figs. 3 and 4 are respectively FIG. 5 is a cutaway perspective view of a fiber reinforced cement board according to a second embodiment of the present invention, and FIGS. 6 and 7 are diagrams showing a method for manufacturing a fiber reinforced cement board, respectively. It is a perspective view showing a side. A, B: Fiber reinforced cement board 1: Fiber frame 2: Rebar frame 3: Long fiber accent line 4: Through holes 5a, 5b, 5c: Textile IT tensioning surface Patent applicant Daikichi Yonematsu

Claims (1)

[Claims] 1) A fiber-reinforced cement board with a built-in fiber frame in which a 1A-m long wire is stretched on the frame body in a cement board with through holes formed in the wall thickness, wherein the fiber-stretched surface by the long fiber wire is A fiber-reinforced cement board comprising a built-in fiber frame surrounding the through hole.