JP2885956B2 - Construction method of mortar outer wall for low-rise houses - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for constructing a mortar outer wall by spray finishing of a low-rise house or the like.

[0002]

2. Description of the Related Art In a conventional general method of constructing a mortar outer wall of a low-rise house, a base plate is attached to a frame structure such as a pillar or a stud, and a mortar anchoring member such as a corrugated lath is attached to the base plate covered with a waterproof sheet. A single mortar layer is applied by plastering so as to embed the mortar anchoring member to a predetermined thickness, and a flattening operation for leveling uneven portions on the surface of the mortar layer is performed by plastering. Is performed with a trowel, and then a sprayer performs ricin or stucco blow finishing with a synthetic resin-based surface finishing material.

[0003] The work of surfing with a trowel cannot be practically performed by amateurs or unskilled workers, and in order to achieve a satisfactory wall surface, one must rely on skilled plasterers. However, in recent years, the shortage of skilled technicians has become more serious in the construction industry due to the disparities between industries in the working environment and changes in the orientation of workers, and this situation is not an exception in plastering and delays in construction And so on.

[0004]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to eliminate the need for plasterers who cannot easily secure personnel at all,
An object of the present invention is to provide a method of constructing a mortar outer wall of a low-rise house or the like, which can easily and accurately perform a work for laying a wall surface.

[0005]

The construction method of the present invention will be described below with reference to the accompanying drawings. In the construction method of the present invention, a base plate 2 is attached to a frame structure 1 such as a pillar or a stud on an outer wall of a low-rise house or the like. And a corrugated lath 4 having the same height in both the vertical and horizontal directions is attached to the base plate 2 covered with the waterproof sheet 3,
A lightweight mortar 7 is sprayed from a nozzle 6 of a mortar kneading spraying machine 5 for sequentially supplying lightweight mortar kneaded to a specified amount of water to a thickness such that the top of the corrugated lath 4 can be seen and hidden, thereby forming an under-sprayed layer 8, The surface of the layer 8 is leveled by the ruler 9 that slides on the top of the corrugated lath 4 in accordance with the height of the crest of the corrugated lath 4, and is lightened from the nozzle 6 while moisture is drawn from the surface of the lower blow layer 8. By spraying the mortar 7 over the entire surface of the under-sprayed layer 8 to a substantially uniform thickness,
After forming the upper blown layer 10 and curing the lightweight mortar of the lower blown layer 8 and the upper blown layer 10, a required surface finishing material is sprayed on the upper blown layer 10.

[0006]

In the embodiment shown in the drawings, a base plate 2 made of plywood is stretched over columns and studs constituting a frame structure of an outer wall, the base plate 2 is fixed by nails, and a waterproof sheet 3 and a corrugated lath 4 are nailed. Alternatively, it is fixed to the base plate 2 by staples. As the waveform lath 4, JIS waveform lath No. 1 is used. When a plurality of waveform laths 4 are attached to the same wall surface, the waveforms are arranged in the same direction.

The mortar kneading and spraying machine 5 has a mixer cylinder 12 connected to a small diameter lower end of a funnel type hopper 11, an eccentric screw pump 13 connected to a lower end of the mixer cylinder 12, and a central portion between the hopper 11 and the mixer cylinder 12. Stirring blades 1 at appropriate intervals on the peripheral surface of the operating shaft 14
5 and a kneading and propulsion stud 16 protruding therefrom, and an operating shaft 14 and a male screw shaft 1 of an eccentric screw pump 13 connected to the operating shaft 14.
7 is driven to rotate by a motor 18, and a pushing blade 19 fixed diametrically at a lower end portion of the operating shaft 14 is attached to the eccentric screw pump 1.
3, a water inlet 20 is provided at the upper end of the mixer cylinder 12, and a mortar feed hose 21 is connected to an outlet of the eccentric screw pump 13.

[0008] Cement and sand put into the hopper 11,
The powder material such as lightweight fine aggregate is appropriately stirred by the stirring blades 15 and sequentially descends to the mixer cylinder 12 while preventing the bridging phenomenon. A specified amount of water is added to the powder material from the water inlet 20 and is fed downward while being kneaded by the kneading / propelling stud 16. The lightweight mortar prepared in this manner is used for the pushing blades 19.
The mortar is fed into the eccentric screw pump 13 sequentially, and the lightweight mortar is sent to the mortar feeding hose 21 without pulsation.

Compressed air is supplied from an air compressor 22 to the nozzle 6 connected to the end of the mortar feed hose 21, and the lightweight mortar 7 is sprayed on the object by the action of the compressed air. In this embodiment, the lower blown layer 8 has a height of about 10 mm, which is approximately equivalent to the height of the peak of the corrugated lath 4.
Sprayed to the thickness of. After completion of the lower blowing, a suitable plastering ruler 9 such as a square timber or a trowel is slid into contact with the top of the corrugated lath 4, and the surface obtained by connecting the tops of the corrugated laths 4 is used as a reference surface to form the lower blowing layer 8. Is smoothed out.

When the excess water has disappeared from the lightweight mortar of the lower blowing layer 8, the upper blowing layer 10 is sprayed from the nozzle 6;
The lower blow layer 8 and the upper blow layer 10 are joined. The nozzle is selected and the nozzle operation is adjusted such that the spraying is not concentrated on a specific location and is uniformly dispersed over the entire surface of the upper blowing layer 10. After this top blowing, the trowel is blown away without using a trowel. In the present embodiment, the thickness of the upper blowing layer 10 is about 5 to 6 mm. After the lightweight mortar is cured, the upper blown layer 10 is subjected to a required surface finish such as ricin blow or stucco blow with a synthetic resin based surface finish.

[0011]

As described above, according to the method of the present invention, the base plate 2
Attach a corrugated lath 4 having the same height in both the vertical and horizontal directions of the corrugated ridge, and spray the lightweight mortar 7 from the nozzle 6 of the mortar kneading and spraying machine 5 to such a thickness that the top of the corrugated lath 4 can be seen and hidden. The blown layer 8 is formed, and the surface of the lower blown layer 8 is leveled by a ruler 9 that slides on the top of the corrugated lath 4, and the water is drawn from the nozzle 6 while moisture is drawn from the surface of the lower blown layer 8. Since the upper blow layer 10 is formed by uniformly spraying the mortar 7 over the entire surface of the lower blow layer 8, the mortar wall surface can be simply and accurately formed by spraying without any skilled plasterer. This can easily solve the problem of delay in the construction period due to lack of plastering work.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a process of leveling a surface portion of a lower blown layer with a ruler slidably contacting a top of a corrugated lath in a method of constructing a mortar outer wall according to the present invention.

FIG. 2 is an explanatory view when an upper blown layer is sprayed and formed after drainage of a lower blown layer in the method of constructing a mortar outer wall according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Frame structure 2 Base plate 3 Waterproof sheet 4 Corrugated lath 5 Mortar kneading spraying machine 6 Nozzle 7 Light weight mortar 8 Lower blow layer 9 Ruler 10 Upper blow layer

Claims (1)

(57) [Claims] 1. A base plate is attached to a frame structure such as pillars, studs, etc. of an outer wall portion of a low-rise house or the like, and a corrugated lath having a height of a corrugated mountain equal in both the vertical and horizontal directions is provided on the base plate covered with a waterproof sheet. A lightweight mortar is sprayed from a nozzle of a mortar kneading spraying machine to a thickness such that the crest of the corrugated lath can be seen and hidden from the nozzle of a mortar kneading spraying machine which is sequentially attached and kneaded to a specified amount of water to form a lower blowing layer. The surface portion of the corrugated lath is leveled according to the height of the crest of the corrugated lath by a ruler that slides on the crest of the corrugated lath. Mortars for low-rise houses, etc., in which the upper blown layer is formed by spraying a substantially uniform thickness over the entire surface and the required surface finishing material is sprayed on the upper blown layer after the lightweight mortar of the lower blown layer and the upper blown layer is hardened. outer wall How to build.