JPS60143910A - Manufacture of 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 method for manufacturing a fiber-reinforced cement board having a built-in fiber frame in which long fiber wires are stretched.

The present applicant has proposed a manufacturing method for fiber-reinforced cement boards that takes advantage of the linear orientation of the wires in long i & 4, but this proposal involves setting the fiber frame horizontally in a flattening form and applying vibration, or For vertical striking, either the fiber frame was set vertically in the formwork and vibration was applied.

In order to make the bond between the cement mixture and the long fiber wire more dense, it was necessary to improve the setting of the formwork.

Figure 1 shows the state of adhesion at the interface between Common sense 411 line 1 and cement mixture 2 when the cement mixture is cast using a flat formwork with the fiber frame set horizontally, and Figure 2 shows the state of adhesion at the interface between the fiber frame and the cement mixture 2. Figure 2 shows the fiber frame set vertically. 11 shows the state of the interface between the long fiber wire 1 and the cement mixture 2 when the cement mixture is cast in the vertical casting form.

The state of adhesion between the long fiber wire 1 and the cement mixture 2 when the formwork for flat casting is set horizontally is that the cement mixture 2 mainly adheres along the outer periphery of the long edge WL line 1, as shown in te (= 1st place.

In addition, when the long fiber wire 1 and the cement mixture 2 are placed vertically in the formwork for vertical casting, the adhesion state of the long fiber wire 1 and the cement mixture 2 is mainly in the bundle of the long fiber wire 1 and the dark blue wire 1, as shown in Fig. 2. The cement mixture 2 is particularly impregnated with paste, and is also attached along the outer periphery of the long ME wire 1.

The purpose of the present invention is to mix these to make the long fibers and the cement mixture uniform, since the state of the interface between the long fiber edges and the cement mixture varies depending on the placement conditions. An object of the present invention is to provide a method for manufacturing a fiber-reinforced cement board that adheres tightly.

In order to achieve this object, the method for manufacturing a fiber reinforced cement board of the present invention is to provide a method for manufacturing a fiber-reinforced cement board of the present invention.
F. A method for manufacturing a fiber-reinforced cement board with a built-in frame, in which the fiber frame is set horizontally in a flat mold, and after pouring a cement mixture and repeating vibrations, it is poured into a 1 m long The hand-hammered form was vertically cut and vibrated again so that the fibers were vertical.

Here, the long edge line 1a in the present invention refers to the minimum length sufficient to provide the required spacing, the minimum length sufficient to be wound once or multiple times, and the long edge wire 1a that is sufficient to provide the required spacing, the minimum length sufficient to be wound once or multiple times, and the length that is sufficient to provide the required spacing. A fiber with a length that can be used. For example, in the case of glass fiber, it refers to things like strands and rovings.

Stretching refers to the state in which long fiber wires are stretched around a frame body by winding, hooking, tying, gluing, or other methods such as stretching long fiber wires around a frame body, and at least two This refers to the state in which long fiber wire is passed between the frame materials.

Therefore, according to the method for manufacturing a fiber-reinforced cement board of the present invention having the above-mentioned configuration, the fiber frame is set horizontally in the flattening form, and the cement mixture is shaken while being thrown. After casting, the manual forming form was set vertically again and vibration was applied again, so that the interfacial adhesion state of the long fiber wire overlapped with the adhesion state shown in Figures 1 and 2. ), the long fiber edges and cement mixture provide a uniform and dense fiber-reinforced cement board.

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. 3 is a process explanatory diagram of a method for manufacturing a fiber-reinforced cement board according to the first embodiment of the present invention, and FIG. 4 is a cutaway perspective view of a fiber-reinforced cement board A manufactured by the manufacturing method.

In Figures 3 and 4, 3 is! &, An alkali-resistant lath fiber M1 as a long fiber wire 1 is stretched over a reinforcing bar frame as a thin fiber frame frame 4. 5 is a formwork for flat casting, with the -1 wide side open, and the cement mixture 2 is cast from the opening 5a.

A detailed explanation of the manufacturing method of the fiber reinforced cement board A is as follows.
First, the formwork 5 for flattening is set horizontally (Fig. 3-
b) 4! h. After the narrow frame 3 is horizontally identified by the spacer 6 (Fig. 3 - mouth), silica-containing concrete as the cement mixture 2 is poured and poured while giving vibration (Fig. 3 - /'% ).

Next, after troweling the surface of the cement mixture 2 evenly with the opening surface, the auxiliary formwork 7 is placed so as to cover the entire finished surface.
Attach the opening 5aL (I) (Fig. 3-2), set the formwork 5 vertically so that the long line M and the line 1 are perpendicular, and apply vibration again (Fig. 3-H). ). In addition, 8 is vibration (geometry).

Therefore, the cement mixture 2 adheres to the long edge M [wire 1 of the fiber frame 3 in the horizontal state and also in the vertical state, and the interface between the long I & connecting wire 1 is uniform and dense 111
It becomes a state of wearing.

Incidentally, the reason why the silica content (S i (, 1) was included in the concrete as cement mixture 1 is to minimize the damage caused by Ca ((-) II) to the alkali-resistant glass fibers. This is to adsorb Ca(Oll)2 and form OaSi03 crystals.

FIG. 5 is a cutaway perspective view of a fiber-reinforced cement board [3] which is an embodiment of the pond.

In the case of , 2, the shape of the reinforcing steel frame as the frame 1 is three-dimensional, and this meta-aramid fiber is stretched on the frame 4 with a space between the long fiber edge 1 and the long fiber edge 1. A fiber Mt frame 3 is built-in.

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

For example, although concrete was used as the cement mixture in the embodiment, polymer cement concrete (mortar) or mortar containing steel fibers may also be used for this pond.

Long fiber wires include alkali-resistant glass fiber, meta-aramid delicate pond, para-aramid fiber, carbon fiber m, lt&
It may be fine.

Incidentally, the long fiber wire is coated with mortar and paste containing amorphous silica, mortar and paste containing water-soluble acrylic resin, mortar and paste containing synthetic resin emulsion, mortar and paste containing synthetic resin organic solvent solution, etc. It can be removed by shaking to improve alkali resistance.

In this case, the covering means can be long mMF, a method of dipping the wire and stretching it on the frame, or a method of common sense M [method of stretching the wire on the frame to make a fiber frame and gluing this fiber frame,
There is a method such as putting the fiber M1 frame into a vacuum device to vacuum odor impregnation.

[Brief explanation of drawings]

1 and 2 are cross-sectional views showing the state of adhesion between the common sense ME wire and the cement mixture at the interface, FIG. The figure is a cutaway perspective view of an ilJ fiber-reinforced cement board manufactured by the manufacturing method, and FIG. 5 is a cutaway perspective view of a fiber-reinforced cement board that is another example. A, B: Fiber-reinforced cement board 1: Long fiber wire 2: Cement mixture 3: Fiber frame 4: Frame body 5: Formwork for flattening patent application filed Yonematsu Daikichi

Claims (1)

[Claims] 1) Textile m with a built-in textile ME frame with long fiber wire stretched over the frame
A method for manufacturing a reinforced cement board, in which a fiber frame is set horizontally in a formwork for flattening, and a cement mixture is poured into the formwork while applying vibration, and then the above-mentioned method is applied so that the long fiber lines are vertical. A method for manufacturing a fiber-reinforced cement board, characterized in that a hand-hammered formwork is set vertically and vibrated again.