JPS59198108A - Fiber reinforced cement product - 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 product having a built-in fiber frame obtained by stretching long fiber lines in the frame.

In the past, the present applicant has proposed several fiber-reinforced cement products incorporating fiber frames.

In this case, a plurality of long fiber single wires are simply bundled together as a long fiber double wire and stretched on a frame. If the Nagatsuka fiber single wires were simply bundled together to form a double wire and stretched, the following problems occurred.

FIGS. 1 to 3 show the state of a long fiber single wire when the long fiber single wire is simply bundled and stretched on a frame as a long fiber double wire. Figure 1 is a plan view of a long fiber double wire, Figure 2 is a cross-sectional view of the same,
FIG. 3 shows the same side view.

In the figure, reference numeral 2' denotes a long fiber double wire, which is simply a bundle of long fiber single wires 3. 3 is a long fiber single wire, each strand is independent and separate. Numeral 4 denotes a void, which is a gap between the long fiber single wires 3. Since the long fiber single wires 3 stretched between the frames are each independent, the tension of each long fiber single wire 3 varies. Therefore, the tension between the long fiber single wires 3 is not constant, resulting in uneven tension. Since the cement paste adheres in accordance with the tension rim 2, the adhesion state of this paste also causes a bulge 2, which causes variations in the strength of the fiber-reinforced cement product.

Furthermore, since the long fiber double wire i is simply a bundle of long fiber ratio @3, the surface of the long fiber double wire i remains smooth in the bundled state, and the cement paste is simply adhered onto this smooth surface. It was nothing more than a . Long fiber ratio i1i with high tension! Even if it is 3, the effect will not be exhibited unless the adhesion is sufficient.

Therefore, if the surface of the long fiber double wire 2' becomes uneven, the strength of the fiber-reinforced cement product will be improved.

Further, as shown in FIG. 2, the long fiber double wire i, which is simply a bundle of long fiber single wires 3, has many voids 11i4, so that the cross section of the long fiber double wire 2' is rough. The stronger the cement product, the more the long fiber single wires 3 are incorporated into the cement product by changing the coarse state to a denser state. In view of these points, the present invention eliminates tension unevenness, uniformly adheres cement paste to long fiber double wires, eliminates strength variations in fiber-reinforced cement products, and improves adhesion on the surface of long fiber double wires. The purpose is to improve the strength of fiber-reinforced cement products by increasing the amount of single long fibers by increasing the distance between the single long fibers and increasing the amount of single long fibers.

That is, in order to achieve these objects, the fiber-reinforced cement product of the present invention involves entangling a plurality of single long fibers to form a single entwined bundled fiber line, and stretching the entwined bundled fiber line around a frame body. The fiber frame obtained by this process is incorporated.

Hereinafter, embodiments of the present invention will be explained in detail with reference to the drawings.

FIG. 4 shows an embodiment of the fiber-reinforced cement product of the present invention.

In the figure, 1 is a #& string reinforced cement product in the form of a flat plate.
Reference numeral 2 denotes a tangled bundled spear wire, in which a plurality of long fiber single wires 3 are entwined to form a single wire. Reference numeral 4 denotes a fiber frame body, and the entwined bundled fiber wire 2 is stretched around the frame body 5. 6 is concrete, which is poured after the fiber frame body 4 is set in the formwork.

Next, FIG. 5 shows a twisted bundled fiber wire 2a which is an example of the tangled bundled fiber wire 2 incorporated in the fiber-reinforced cement product, and FIG. 6 shows a twisted bundled fiber wire 2a which is another example of the tangled bundled fiber wire 2. Similarly, FIGS. 7 and 8 showing the line 2b also show a triad bundled fiber wire 2 which is still another example of the entwined bundled fiber wire 2.
C and twisted bundled fiber #i! 2d is shown.

The twisted fiber bundle 2 shown in FIG. 5 is made of long glass fibers lIj.
! A twisted bundled fiber wire 2aK is formed by twisting long glass fibers +1!2' which are simply bundled together.

Therefore, the fiber-reinforced cement product 1 in which the twisted bundled fiber wires 2a are stretched over the frame 5 and incorporated as the fiber frame 4 has the following effects.

Since the plurality of long fibers i obtained by simply bundling the single glass fibers 3 are twisted to form a single twisted bundled fiber line 2a, the tension of each single glass single fiber 3 is the same as that of a single twisted bundled fiber line 2a. Since it is unified, there will be no uneven tension, and the adhesion of cement paste will be uniform, which will eliminate variations in the strength of fiber reinforced cement products. :17j! The surface of the bundled fibers m2a is twisted, creating an uneven shape, which increases the frictional force with the cement paste and increases adhesion, resulting in fiber-reinforced cement products.
strength is improved. In addition, since the long fiber double wires 2' are twisted, the distance between the long glass fiber single wires 3 becomes dense, and a large amount of glass long fiber wires 3 can be effectively incorporated, thereby improving the strength of the fiber reinforced cement product 10. You can also do that.

The twisted bundled fiber wire 2 shown in FIG. 6 is created by twisting two long fiber double wires i, which are simply bundled glass long fiber single wires 3, to form a single twisted bundled fiber wire 2b. Similarly, the tension of each individual long glass fiber single wire 3 disappears, and the tension of a single twisted bundled fiber wire 2b is created. Cement paste is uniformly adhered around the torsionally focused frayed string line 2b, and variations in strength of the fiber reinforced cement product 1 are eliminated. or,
The surface of the twisted fiber-reinforced fiber wire 2b is unevenly formed by twisting, thereby increasing the adhesion strength with the cement paste and improving the strength of the fiber-reinforced cement product 1.

The Karame bundled fiber wire 2 shown in FIG. 7 has the strength of the fiber-reinforced cement product 1 because it combines three long fiber double wires 2', which are simply bundled glass long fiber single wires 3, into one triple bundled fiber wire 2c. The strength is improved as well as the dispersion is eliminated.

The Karame bundled fibers m2 shown in FIG. The variation in strength is eliminated and the strength is improved. Note that 2d'.

2J is a twisted portion.

In the present invention, entwining refers to twisting, braiding, twisting, knitting, or twisting a plurality of long fiber single wires. Tangled bundled fiber wire refers to a fiber wire in which multiple single long fibers are entwined and bundled into one. Types of long fiber single wire are glass fiber (alkali-resistant glass fiber),
Any carbon fiber, synthetic fiber (Kevlar; DuPont trademark), or other stretchable chemical fiber may be used.

Although several embodiments of the present invention have been described above with reference to the drawings, the specific configuration of the present invention is not limited to the above embodiments. Although the fiber-reinforced cement products in the examples are flat, they can also be circular, square, U-shaped, L-shaped,
It may have any other shape.

The twisted bundled fiber wire 2b shown in FIG. 6 has two long fibers ba.
Although the wires 2' are twisted, three or more long fiber double wires 2 may be twisted.

Although the triple bundled fiber wire 3c is composed of three long fiber double wires 2', four or more long fiber double wires 2' may be assembled.

Two of the twisted bundled fiber wires 3d are twisted, but three or more may be twisted.

As explained above, according to the present invention, a plurality of single long fibers are intertwined to form a single intertwined bundled fiber wire, which is stretched and built into the frame, so that the fiber-reinforced cement product has no strength. In addition to consistent quality control, irregularities are created on the surface of the entangled fiber wires, increasing adhesion and improving the strength of fiber-reinforced cement products. In addition, by entangling the long fiber single wires, the distance between the long fiber single wires can be increased, a large amount of long fiber single wires can be contained, and the strength can be extremely increased.

[Brief explanation of the drawing]

Figure 1 is a plan view of a long fiber double wire, Figure 2 is a cross-sectional view of the same, Figure 3
The figures are the same side view, FIG. 4 is a cutaway perspective view of a fiber-reinforced cement product according to an embodiment of the present invention, FIGS. 5, 6, 7,
FIG. 8 is a diagram showing each entwined bundled fiber line. 1...Fiber-reinforced cement product 2...Tangled bundled fiber wire 2a*2b...Twisted bundled fiber wire 2c...Triple bundled fiber wire 2d...Twisted bundled fiber wire 2'...Long fiber Double track 3...Long fiber single wire 4...Fiber frame 5...Frame 6...Concrete Patent applicant: Daikichi Matsu 3 4 Figure 2 Figure 4 Figure 7-1: ≧, 7 soil 2'6

Claims (1)

[Claims] /) A fiber reinforcement characterized in that a plurality of single long fibers are entwined to form a single entwined bundled fiber line, and a fiber frame obtained by stretching the entwined bundled fiber line on a frame is incorporated. cement products.