JPS5841323Y2 - mortar base plate - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a mortar base plate useful as a base material for mortar walls, which are often found as interior and exterior walls of buildings.

Generally speaking, mortar walls are constructed by first nailing wooden boards to the edges.
The structure was such that felt and lath material were laminated thereon, these were fixed with staples, and mortar material was sprayed or brushed on top of it.

This method has the disadvantage of requiring many steps and prolonging the construction period, as well as causing cracks and flaking of the mortar wall due to external vibrations, temperature, humidity, shrinkage, and displacement due to expansion.

The present invention eliminates these drawbacks by integrally laminating plywood, synthetic resin foam, and alkali-resistant glass fiber layers, dramatically shortening the construction period, and adding insulation and cushioning properties to the base layer. To provide a mortar base plate which prevents cracking and peeling of mortar walls by improving mortar adhesion.

An embodiment of the mortar base plate according to the present invention will be described in detail below with reference to the drawings.

That is, FIG. 1 is a longitudinal cross-sectional view of a mortar base plate according to the present invention, and its structure is such that a synthetic resin foam 2 is placed on a plywood 1.
, and an alkali-resistant glass fiber layer 3 is integrally laminated thereon.

To explain in more detail, the plywood 1 has a mechanical strength at least equal to or higher than that of lath board, and is made of one type of board thickness, for example, 7 mm, 9 mm, or 12 mm.

Also, the size of this plywood is 900 mm x 1800 mm
It is mm.

Of course, waterproofing and anticorrosion treatments may also be applied.

The synthetic resin foam 2 is polyurethane foam,
Closed cell structures such as polyisocyanurate foam and phenol foam are mainly used.

For example, required characteristic values are shown for compressive strength, bending strength, and tensile strength.

An example of this is 0.0 in polyurethane foam.
Density of 30g/cm3, compressive strength 1.2 kg/cm”
, the bending strength is 3°5 kg/cm2.

In addition, this synthetic resin foam 2 is a liquid raw material, which is discharged, reacts, foams, and hardens, and has self-adhesion, water absorption resistance, alkali resistance, acid resistance, and moisture resistance. It has insulation and cushioning properties on top.

Further, the thickness of the synthetic resin foam may be set to 10 to 100 mm or arbitrarily depending on the purpose.

Furthermore, the foam structure made of closed cells has excellent waterproof properties.

The alkali-resistant glass fiber layer 3 described above is a layered layer of glass fiber mat, nonwoven fabric, etc., and a mortar material is adhered to one surface of this glass fiber layer.

The thickness of the alkali-resistant glass fiber layer depends on the integrated structure of the synthetic resin foam, but if the foam 2 is thick, a portion of the glass fiber layer 3 will be impregnated with the synthetic resin foam and exposed. The portions 3a that look like they are covered are the mortar adhesion surface with a mottled distribution.

Next, to briefly explain the method for manufacturing the mortar base plate according to the present invention, first, the plywood 1 is placed in a lower mold (not shown),
On top of that, polyurethane foam raw material is injected.

Then, the reaction of the polyurethane foam raw material progresses from cream to gel time, and during foaming, an alkali-resistant glass fiber layer 3 is laminated, an upper mold is placed on top of the layer 3, and the foam is cured at 70 to 80°C for several minutes.

Then, remove the mortar base plate from the mold.

Therefore, as shown in Figure 3, this mortar base plate is
Nails B, mortar fasteners (not shown) used in the PB earthwork method, and connectors C are fixed together, and mortar is sprayed or Mortar wall (plywood 1
2mm, polyurethane 19mm, glass fiber layer 5mm,
Mortar material (15 mm) is formed.

The connector C is made of metal, synthetic resin, or mineral fiber, and is formed, for example, as shown in FIGS. 4a to 4d.

That is, figure a shows a flat object, figure C shows a wavy object, and figure d shows a lath-like object.

Therefore, we observed various physical properties of the mortar material and mortar base plate, especially a part of the mortar wall, for example, 100 mm.
When a test piece with a size of 100 mm was taken out and measured, the adhesion strength (J
ISK-6851) was approximately 6 kg/cm2.

In addition, the water absorption of the mortar base plate is only about 1 to 2% in the surface layer of the glass fiber layer 3 and in the lower layer, and the heat transmission coefficient of the entire mortar wall is about 1.2 Kcal/m2h.
'C.

Furthermore, the mortar material did not peel off from the mortar base plate even due to vibration.

Almost no other condensation was observed.

In addition, harmful cracks, which are the biggest drawback in mortar walls, were not observed in this experiment (10 cycles of 12 hours of dry and wet cycles).

What has been described above is only one embodiment of the present invention, and the synthetic resin is made by mixing pearlite grains, shirasu balloons, etc. with a particle size of 10 to 50 mmφ into a synthetic resin foam and molding it, exposing the porous foam structure surface. A mortar base plate using foam is also possible.

It is also possible to separately manufacture a synthetic resin foam and integrally fix it onto the plywood using an adhesive.

As mentioned above, according to the mortar base plate according to the present invention,
Since a synthetic resin foam with cushioning, heat insulation and water resistance is interposed between the plywood and the mortar wall, cracks and peeling of the mortar wall caused by temperature differences between the inside and outside are greatly reduced.
There are characteristics that can be suppressed.

Furthermore, even if there is a considerable temperature difference between the inner and outer walls, there is an advantage that condensation does not form on the inner and outer walls due to the high heat insulation properties.

Furthermore, since it is lightweight and can be constructed with large boards, the mortar base surface can be created in a short time.

In addition, it is possible to prepare a mortar base in a short period of time because it eliminates the need for complicated work such as attaching lath board, lath, waterproof paper, etc. during construction, which is difficult to install.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of the mortar base plate according to the present invention, FIGS. 2a and b are explanatory views and perspective views for explaining the laminated state of the mortar base plate, and FIG. 3 is a FIG. 4 is a vertical cross section showing a mortar wall structure formed using the mortar base plate according to the present invention. FIG. 2 is an explanatory diagram and a side view. 1...Plywood, 2...Synthetic resin foam,
3...Glass fiber layer.

Claims (1)

[Scope of utility model registration request] Plywood, a synthetic resin foam, and an alkali-resistant glass fiber layer are laminated in this order, and these components are integrated with self-adhesive properties when forming the foam, and a surface layer of the foam is applied to the glass fiber layer. A mortar base plate characterized by being impregnated.