JP2004308367A - Reinforcing construction method for mortar external wall and washer used in this method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a construction method for eliminating a crack problem on an external wall of a building structure of a mortar wall face to perform safe and solid reinforcement and to provide a washer product used in this construction method. <P>SOLUTION: Holes 6 are formed at measure interval of 20 to 100 cm of an upper face on which mortar is applied for the mortar external wall constituted by stretching a lath board 3 on an upper face of a lath board 2 and applying mortar 5 on it. A washer 7 is fitted in each hole. A screw nail 9 is driven into the lath board through the washer. After a tip of the screw nail reaches the lath board, mortar is filled into each hole to prevent exposure of the washer for finish. Depth of the hole is 2 to 5 mm and its surface area is 3 to 30 cm<SP>2</SP>. The washer has many transparent holes 8 of 3 to 10 mm for a platelike body face made of metal or synthetic resin having wall thickness of 1 to 2mm and diameter of 2 to 5 cm. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method for reinforcing a mortar outer wall and a washer used in the method.
[0002]
[Prior art]
Mortar coating is frequently used as an outer wall of a building structure. The mortar is a mixture of cement and sand and kneaded with water. However, the mortar is apt to be cracked, and rainwater or the like penetrates from the crack, causing a chemical change to cause deterioration of the wall surface.
[0003]
[Non-patent literature]
"Painting and waterproofing works, Yamayama painting" brochure [0004]
[Problems to be solved by the invention]
An object of the present invention is to provide a construction method for solving the above-mentioned crack problem and performing safe and strong reinforcement on the outer wall of the building structure to be mortar-coated, and a washer used in the construction method. .
[0005]
[Means for Solving the Problems]
According to the present invention, concave holes are formed at grid intervals of approximately 20 cm to 100 cm on the mortar outer surface where the mortar is applied by stretching the lath plate on the upper surface of the lath plate, and a washer is fitted into each concave hole. At the same time, a screw nail is driven into the lath plate via the washer, and after the tip of the screw nail reaches the lath plate, mortar is filled in each concave hole and finish coating is performed so that the washer is not exposed. It is characterized. At this time, the concave hole has a depth of 2 mm to 5 mm and a surface area of 3 cm ^{2 to} 30 cm ² , and the washer has a thickness of about 1 mm to 2 mm and a diameter of ² cm to 5 cm made of metal or synthetic resin. A large number of through-holes of about 3 mm to 10 mm are formed in the surface. A through-hole of 3 mm to 10 mm is provided in the center for screw nails, and a 2 mm to 6 mm through-hole is formed around the center. In a row or a plurality of rows of concentric circles at equal intervals.
[0006]
BEST MODE FOR CARRYING OUT THE INVENTION
1A is a partially cutaway plan view, and FIG. 1B is an enlarged cross-sectional view taken along line XX of A.
In this figure, 1, 1, ... are structural materials (posts) of a building, 2, 2, ... are arranged at regular intervals in the horizontal direction between the structures 1, 1, .... A lath (wire mesh) 3 is fastened to the lath plate 1 on these lath plates by using a tucker with a felt oil paper 4 interposed therebetween.
[0007]
Thus, the mortar 5 is applied to the upper surface of the lath 3 so that the mortar wall surface is formed, and the operation steps so far are the same as the conventional one.
Incidentally, in the present invention forms so as to form a concave hole 6 which forms a depth t in the meshes interval k of approximately 20cm~100cm respect to the mortar 5 top 2 mm to 5 mm, the surface area s of about ^{3cm 2 ~30cm} 2 It is. At this time, the concave hole 6 is formed by using an appropriate embossing tool at the base stage of the mortar coating, but is formed by grinding with a grinder at the reinforcement work of the ready-made wall surface.
[0008]
Numeral 7 is a washer fitted into the concave hole 6 formed as described above. The washer 7 has a large number of through-holes 8 formed in the surface as shown in FIG. Is made of a metal such as stainless steel having a thickness e of about 1 to 2 mm and a diameter of about 2 to 5 cm, or a synthetic resin plate such as polycarbonate. Thus, the diameter of the through hole 8 is approximately 3 mm to 10 mm, and one of the through holes is used for driving a screw nail described below toward the lath plate. In other cases, the finishing mortar to be filled in so as to cover the upper surface of the concave hole including the washer is integrally connected to the mortar of the base, so that the effect of improving the adhesion of the washer and the screw nail is exhibited.
[0009]
Reference numeral 9 denotes a screw nail, which is driven toward the lath plate 2 from one of the through holes 8 of the washer 7 fitted into the concave hole 6 so that its tip reaches the lath plate 2 and is fixed thereto. I will do it. That is, in the present invention, the concave hole 6 is formed at a predetermined interval (mesh interval k) on the mortar wall surface, and the washer 7 having the special configuration as described above is fitted into the concave hole, and the screw nail 9 is inserted through the washer 7. Is driven toward the lath plate 2 so that a strong squeezing state can be obtained on the mortar wall surface. The mesh spacing k in the above is appropriately changed depending on the thickness h of the mortar wall. According to the results of a number of experiments conducted by the present inventor in the normal thickness range of 2 cm to 4 cm, it has been found that the interval should be approximately 20 cm to 100 cm, preferably 20 cm to 60 cm. Note that the length of the screw 9 is approximately 3 cm to 5 cm, and a vertical arrangement of the screw nails may cause a gap of 1/2 pitch between adjacent vertical intervals. Is preferred.
[0010]
Next, according to the present invention, after the screw 9 is fixed, the mortar material 10 is filled in the concave hole 6 to cover the upper surface of the washer 7 so that each washer is not exposed to the outer surface. May be performed partially on each concave hole, or may be performed on the entire painting finish process. FIG. 3A is an overall surface view in which the above operation has been performed, and FIG.
[0011]
FIG. 4 shows another example of the washer 7 used in the method of the present invention. In this embodiment, a through hole 8 'of about 3 mm to 10 mm is formed at the center of the washer 7' for screw nails. In this example, through holes 8 "of 2 mm to 6 mm are formed at equal intervals around the periphery. In the illustrated example, the through holes 8 'and 8" are arranged in a line. In the case of a large diameter of 7 ", it is further arranged in concentric or eccentric multiple stages, and it is preferable that the relationship between the upper and lower stages is staggered.
[0012]
In recent years, the walls of Western-style buildings called siding have been heavily used, but mortar walls are very popular because they match Japanese architecture using Japanese-style tiles, but they are vulnerable to earthquakes and other vibrations. However, the reinforcing method according to the present invention was able to eliminate the above problems.
[0013]
【The invention's effect】
The present invention is configured as described above, and the mortar coating wall surface is fixed to the lath plate of the base material in a stable clamping state within a specific interval, so that the mortar wall surface has a problem. That is, it is possible to prevent cracks and cracks, which are inevitably generated with time, and propagation to the entire surface, as much as possible. The problem of trouble is solved, and the durability can be dramatically improved, and the aesthetic appearance is also very excellent.
[Brief description of the drawings]
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory view of the method of the present invention, in which 1A is a partially broken plan view, and FIG.
FIG. 2 is a perspective view of a washer used in the method of the present invention.
FIG. 3A is a wall view on which the method of the present invention is implemented, and FIG. 3B is an enlarged cross-sectional view of A taken along line XX.
FIG. 4 is a perspective view showing another example of a washer.
[Explanation of symbols]
1 support 2 lath plate 3 lath (wire mesh)
4 felt (oil paper)
5 Mortar 6 Concave hole 7, 7 'Washer 8, 8' Through hole 9 Screw nail

Claims (4)

Concave holes are formed at intervals of about 20 cm to 100 cm on the mortar outer surface of the mortar outer wall where the lath plate is stretched on the upper surface of the lath plate and the mortar is applied. After driving the screw nail toward the lath plate through the lath plate and letting the screw nail tip reach the lath plate, mortar is inserted into each concave hole and finish coating is performed so that the washer is not exposed. Mortar outer wall reinforcement method. Recessed hole depth 2 mm to 5 mm, Retrofit for mortar exterior wall according to claim 1, characterized in that made in the surface area of ^{3cm 2 ~30cm} 2. 2. The washer is formed by forming a large number of through holes of about 3 mm to 10 mm in a metal or synthetic resin plate-like body having a thickness of about 1 mm and a diameter of 2 cm to 5 cm. The mortar outer wall reinforcement method described. A through hole of 3 mm to 10 mm is formed in the center of a metal or synthetic resin plate having a thickness of about 1 mm to 2 mm and a diameter of 2 cm to 5 cm, and a 2 mm to 6 mm through hole is equally spaced around the center. The washer for use in the method of reinforcing a mortar outer wall according to any one of claims 1 to 3, wherein the washer is arranged in one or more rows in a concentric manner.

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