JPS5852067B2 - Dannetsubou Onyou Mortar Kabesekouhou - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of constructing a mortar wall for heat and sound insulation.

Mortar for Heat and Sound Insulation When a wall requires heat and sound insulation, low-density mats made of inorganic fibers have traditionally been fitted between the pillars, and although this has been somewhat effective, As a construction method, there is no difference from general construction methods,
It was as if the number of steps had increased by using the inorganic fiber mat.

That is, a mortar wall in a conventional wooden building has a structure as shown in FIG.

This configuration consists of base pillars 1, 1. ...
Inorganic fiber mat for heat and sound insulation between 2, 2,
..., and place the base pillars 1, 1, 1... on the side facing outdoors.
A lath base plate 3 is nailed across the lath base plate 3, an asphalt felt paper 4 is pasted on the surface of the lath base plate 3, a wire lath 5 is fixed from above with a gun tacker (not shown), and then a mortar layer 6 is attached. The interior material 7 is applied to the interior of the room and the pillars 1. It was installed on i, i...

Depending on the construction method mentioned above, cement shrinks as it hardens, cracks appear in the mortar layer, and rainwater enters the wall through the asphalt felt paper 4, nail holes, etc. , it is absorbed by the inorganic fiber mat, and since the mortar is outside and difficult to dry, it has the disadvantage of reducing long-term insulation and sound absorption effects.

Further, the water accumulates near the foundation, and since the mortar layer 6 does not easily allow moisture to pass through, it does not dry out even on a sunny day, and there is a risk of corroding the foundation, pillars, etc.

As a result of repeated studies to improve the above-mentioned drawbacks, the present inventor installed an inorganic fiber mat treated with water repellent on the side facing outdoors of the pillars that make up the peripheral wall of the building, and formed a mortar layer in contact with the surface of the mat. It was discovered that very good results could be obtained by doing so, and the present invention was proposed.

Conventionally, when mortar is directly applied to an inorganic fiber mat, the moisture in the mortar or the mortar itself permeates into the mat, impairing its heat insulation properties, so the method described above has been unavoidable.

However, according to the research conducted by the present inventors, it has become possible to directly apply mortar to the water-treated inorganic fiber mat, and therefore the construction method described below has become possible.

As a result, the process has been greatly simplified, and an air layer is created between the columns, further improving the insulation effect, and even if cracks occur in the mortar, the mat is water-resistant, so moisture can be absorbed. Since it does not absorb water or allow moisture to pass inside, there is no risk of corrosion of pillars, foundations, etc.

As the mortar of the present invention, a normal mortar can be used and it can be sprayed or troweled onto the inorganic fiber mat, but particularly good results are obtained when a mortar reinforced with alkali-resistant glass fiber or other fiber material is used. is obtained.

This is thought to be because the reinforcing fibers enhance the effect of preventing the penetration of inorganic fiber mats treated with water into the mortar, and with ordinary mortar, in order to directly apply the mats, the mat must have a high i/lri of 60. Although a high-density product is required, the use of reinforcing fibers makes it possible to use a low-density mat of about 20 kg7m3, making it possible to further improve the insulation effect and increase the strength of the mortar itself.

The mortar can be applied directly to the mat, but a mat lath or the like may also be used (in this case, the mortar is in direct contact with the mat through the lath) to reinforce the mortar and make it easier to apply with a trowel.

There are no particular limitations on the inorganic fiber mat used as a heat insulating and soundproofing material in the method of the present invention.
It is manufactured by centrifugation, etc., and is made by bonding monofilament long or short glass fibers with an average thickness of about 4 to 12 microns with a binder to form a mat with a density of about 20 to 50 kg/m3. The appropriate one is

As the binder, a phenolic binder is usually used.

In the present invention, the above-mentioned inorganic fiber mat imparted with water-repellent properties is used.

As a drainage agent, water repellent agents such as silicone-based and fluororesin-based agents can be used, and these are sprayed during mat production, or applied to the mat by spraying, dipping, etc. after mat formation.
Desired water repellency can be imparted.

Furthermore, although commonly used mortar may be used as the mortar, in cases where particularly strong strength is required, it is better to use mortar reinforced with reinforcing fibers as described above. This has the effect of not only increasing strength but also allowing the use of low-density mats.

Next, the first embodiment of the present invention will be described based on FIGS. 2 and 3. An inorganic fiber mat 2' with a density of 48 kg/m3 for heat and sound insulation that has been subjected to water contact treatment is pasted on the side facing outdoors, without leaving any gaps, and wire lath is attached to the outside. 5 and drive washer nails 8 into the wire laths 5 and the mat 2'.

After that, apply mortar by spraying or troweling 12
This constitutes a mortar layer 6.

In addition, each company 1,1. The interior material 7 is installed inside and outside the room in the same way as before.

The table below shows a comparison between the mat coated with mortar in the above example and the mat coated with mortar to a thickness of 157 ftm on a conventional base plate.

In this comparative experiment, the experimental product was held horizontally and a 1 kg weight was dropped.

As is clear from the table above, the present invention has the same strength as that using a conventional base plate even without using a base plate.

In the above examples, each company 1. Since the mat 2' is fixed on the side facing outdoors and mortar is applied to it, it has sufficient strength as a wall surface, and there is no need to provide a base plate. ...A space can be created between them, which improves ventilation and also provides soundproofing from outside.
Due to the air layer, the insulation effect is better than before.

Also, the mortar will come into direct contact with the mat 2',
The mat 2' has been subjected to water contact treatment, which can prevent moisture contained in the mortar and the mortar itself from penetrating the mat 2', and the heat and sound insulation effect of the mat 2' will not be lost. Even if cracks occur in the mortar, water will not enter, so there is no need to use waterproof paper, and water will not leak into columns 1, 1. ...It is possible to completely prevent corrosion of pillars, foundations, etc. that occurs in the past due to accumulation in between.

Further, although the mat 2' has good mortar adhesion, by using the lath 5 as in the embodiment, the mortar adhesion is further improved and the wind pressure strength can be improved.

Next, the second embodiment will be described. Unlike the first embodiment, the mortar layer 6 is constructed by applying mortar reinforced with reinforcing fibers.

The rest is the same as the first embodiment, so the explanation will be omitted.

In the second embodiment, mortar reinforced with reinforcing fibers is used, which has the effect of further preventing penetration of the mortar into the mat 2'. The strength of the mortar itself increases as it becomes a dog.

In addition, when using fiber-reinforced mortar, lime in an amount of up to 20% of the weight of the cement, and in some cases, a resin-based cement admixture of up to 10φ may be added to further improve the troweling properties. be.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view showing a conventional mortar wall construction method, Fig. 2 is a cross-sectional view showing an embodiment of the mortar wall construction method for heat insulation and soundproofing according to the present invention, and Fig. 3 is a cross-sectional view showing one part cut away in sequence. It is a front view. In the figure, 1 is a pillar, 2' is an inorganic fiber mat, and 6 is a mortar layer.

Claims (1)

[Scope of Claims] 1. An inorganic fiber mat treated with water is attached to the side facing outdoors of a pillar forming a peripheral wall of a building, and mortar is applied to the surface and hardened to form an inorganic fiber mat. A mortar wall construction method for heat and sound insulation characterized by configuring a single layer of mortar. 2. A mortar wall construction method for heat and sound insulation according to the first invention, characterized in that the mortar layer is constructed using mortar reinforced with fibers.