JP2005015257A - Plastered wall, wall plastering material and wall plastering method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a plastered wall more satisfactorily exhibiting humidification function or the like of diatom earth by solving problems in the conventional diatom earth-containing plastered wall. <P>SOLUTION: The pastered wall is formed by bonding and integrating a siliceous shale granular material having 0.1-30 mm average particle diameter with 5-20 pts.wt. hydraulic binder per 100 pts.wt. siliceous shale granular material in the presence of 30-50 pts.wt. water per 100 pts.wt. siliceous shale granular material and 0.5-1.0 pts.wt. inorganic salt modifying agent per 100 pts.wt. siliceous shale granular material. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a painted wall, a painted wall material, and a painted wall construction method, and more particularly, a painted wall used for interior finishing of a house and a painted wall material that is a material for constructing such a painted wall. And a method of constructing a painted wall using this painted wall material.
[0002]
[Prior art]
As a painted wall of a general house, a painted wall material mainly composed of a hydraulic material such as plaster or plaster is used. The painted wall is constructed by adding water to the painted wall material and kneading, and applying the kneaded material to the ground below the wall and drying and curing.
In recent years, a technique has been proposed for imparting a humidity control function to a painted wall by blending diatomaceous earth with the painted wall material. Diatomaceous earth is a material with excellent moisture absorption and release properties. When the humidity in the indoor space increases, the diatomaceous earth blended in the painted wall absorbs moisture, thereby reducing the humidity in the indoor space. When the indoor space is too dry, the moisture absorbed by the diatomaceous earth is released, thereby suppressing the drying of the indoor space. The humidity of the indoor space is adjusted to a certain range. Diatomaceous earth is known to have a deodorizing function and an adsorption function for volatile gases such as formaldehyde, which is a causative substance of sick house syndrome, in addition to a humidity control function.
[0003]
As a manufacturing technology for functional building materials that are used as wall materials, etc., a technology is known in which the humidity control function of diatomaceous earth is not impaired by blending a mixture of inorganic salts of a specific combination with diatomaceous earth and lime (See Patent Document 1).
[0004]
[Patent Document 1]
Japanese Patent No. 3190284
[Problems to be solved by the invention]
The coating wall containing diatomaceous earth has a problem that various functions inherent to diatomaceous earth are not sufficiently exhibited.
As one of the reasons, it is considered that the above-described humidity control function cannot be exhibited because the surface or pores of diatomaceous earth are blocked with a hydraulic binder.
If the blending amount of the hydraulic binder is reduced, the function of the diatomaceous earth is easily exhibited, but the strength of the painted wall is lowered. In order to prevent the coated wall from cracking or chipping off over time or due to external force, it is necessary to blend a sufficient amount of hydraulic binder and firmly bond and integrate the diatomaceous earth. Since diatomaceous earth itself is not so strong, the strength of the painted wall is greatly reduced if the bonding with the hydraulic binder is not sufficient.
[0006]
When the inorganic salt mixture disclosed in Patent Document 1 is blended, a cured product containing diatomaceous earth can be obtained only by using a relatively small amount of a hydraulic binder. Nevertheless, the function of diatomaceous earth could not be fully exhibited.
An object of the present invention is to solve the problems of the conventional coating wall containing diatomaceous earth as described above and to provide a coating wall that can better exhibit the humidity control function of diatomaceous earth. .
[0007]
[Means for Solving the Problems]
The coated wall according to the present invention comprises a siliceous shale granule having an average particle diameter of 0.1 to 30 mm, 30 to 50 parts by weight of water with respect to 100 parts by weight of the siliceous shale granule, and the silica 5 to 20 parts by weight of water to 100 parts by weight of the siliceous shale granule in the presence of 0.5 to 1.0 parts by weight of an inorganic salt modifier for 100 parts by weight of the shale granule. Bonded and integrated with a hard binder.
[Siliceous shale granule]
It is a granular material made of siliceous shale.
[0008]
Although siliceous shale is contained in diatomaceous earth in a broad sense, it is a natural substance that exhibits a shale shape. Specifically, the Wakkanai diatomite produced in the Wakkanai region of Hokkaido is applicable. Of course, siliceous shale produced outside the Wakkanai region and having the same structure as the Wakkanai diatomite can also be used. The siliceous shale has a porous structure like ordinary diatomaceous earth, and is excellent in water absorption and water absorption retention. The humidity control function, deodorization function and gas adsorption function are also excellent. There are also heat insulation and soundproofing functions. Siliceous shale is superior in mechanical properties such as compressive strength compared to ordinary diatomaceous earth. In particular, it is difficult for the strength to decrease or collapse even in a water-absorbing state.
[0009]
The mined siliceous shale is used as a siliceous shale granule having an average particle size of 0.1 to 30 mm by means such as grinding. The average particle size is preferably 0.5 to 1 mm. The preferred particle size distribution varies depending on the use and required performance of the cured siliceous shale.
The shape of the siliceous shale granule may be spherical, flake shaped, rod shaped, polygonal shaped, etc., or may be an irregular shape whose shape is not particularly defined.
(Water curable binder)
It plays the function of combining and integrating siliceous shale granule.
Basically, hydraulic binders used for producing ordinary inorganic cured products and inorganic building materials can be used. Specific examples include cements such as Portland cement and blast furnace cement, lime, gypsum, plaster, and magnesium. A plurality of materials can be used in combination.
[0010]
The hydraulic binder is preferably used in the smallest possible amount as long as it can combine and integrate the siliceous shale powder particles and exhibit desired strength and durability. When the hydraulic binder is excessively present, the surface of the siliceous shale granule is blocked and various functions of the siliceous shale are inhibited. A preferable compounding amount is 5 to 20 parts by weight with respect to 100 parts by weight of siliceous shale granule. More preferably, it is 5 to 10 parts by weight.
[Inorganic salt modifier]
It has the function of forming an environment in which the bonding and integration of siliceous shale powder particles with a hydraulic binder is appropriately performed.
[0011]
Specifically, the ionic component and the like contained in the inorganic salt modifier improve the ionic environment at the interface between the siliceous shale granules and the binding reaction environment between the hydraulic binder and the siliceous shale granules. As a result, it is a small amount of hydraulic binder, and the siliceous shale powder particles can be bonded and integrated reliably and firmly.
As the inorganic salt adjusting agent, a mixture of a plurality of inorganic salts in an appropriate balance is used. For example, ionic additives described in JP-A-10-291850 can be used. A cement admixture described in JP-A-9-286644 can also be used. A catalyst solution described in JP-A-10-1908 can also be used.
[0012]
As a specific blend of the inorganic salt adjuster, those containing 30 to 50% by weight of calcium ions, 5 to 20% by weight of metal ions, and 5 to 15% by weight of potassium ions can be used.
The inorganic salt adjuster is produced by sequentially mixing and dissolving a predetermined inorganic salt in water. Used in the form of an aqueous solution.
Inorganic salt modifiers are used in admixture with siliceous shale granule and hydraulic binder in an appropriate amount to achieve the desired function. Usually, 0.5 to 1.0 part by weight of an inorganic salt modifier is used with respect to 100 parts by weight of siliceous shale granule. Preferably, it is 0.7-0.8 weight part.
[0013]
(Painted wall material)
It is a material for constructing painted walls. Basically, techniques common to ordinary painted wall materials can be applied.
The coated wall material includes a siliceous shale granule having an average particle size of 0.1 to 30 mm, and an inorganic salt adjusting agent of 0.5 to 1.0 part by weight based on 100 parts by weight of the siliceous shale granule. And 5 to 20 parts by weight of a hydraulic binder with respect to 100 parts by weight of siliceous shale granule. In addition to these materials, various additives that are blended in ordinary coated wall materials can also be blended. For example, aggregates and coloring materials can be used.
[0014]
The painted wall material is usually supplied as a mixture of particles. Of the materials necessary for the construction of the painted wall, water may not be blended. However, moisture may be contained in a constituent material such as siliceous shale granule.
[Construction of painted walls]
The aforementioned painted wall material is used. Basically, techniques common to ordinary painted wall construction can be applied.
In general, since the coated wall material is supplied in a granular state, the coated wall material in a granular state and a predetermined amount of water are kneaded to obtain a paste state. The compounding quantity of water can be set to 30-50 weight part with respect to 100 weight part of coating wall material. Preferably, it is 30-40 weight part. The amount of water mixed here excludes the amount of water originally contained in the coating wall material.
[0015]
A paste-like painted wall material is applied to the surface of the base material of the wall surface. As a base material, the same material as the base material of the coating wall in normal wall surface structures, such as a plywood and a gypsum board, can be used. The painted wall material coated on the surface of the base material is a combination of a hydraulic binder that hardens by contact with water in an environment where a large number of siliceous shale granules are adjusted by an inorganic salt modifier. The walls are joined and integrated to have a predetermined thickness. Usually cured by natural curing. Heat curing can also be adopted.
The same technique as that for normal painted wall construction can be applied to the equipment, tools, and construction procedures used for painted wall construction.
[0016]
The coating amount of the painted wall material varies depending on the composition of the coated wall material and the construction conditions, but can usually be set to a thickness of 0.3 to 2 cm as the thickness of the coated wall after drying and curing. Preferably, it is 0.5-1 cm.
[Painted wall]
Since the painted wall has a space inside, the density is relatively small and light. Specifically, the density can be set to 60 to 90 g / cm ³ . The density is preferably 70 to 80 g / cm ³ . The smaller the density, the more exposed surface of the siliceous shale granule and the more various functions can be exhibited effectively. In terms of strength and durability, those having a certain density are preferable.
[0017]
It is desirable that the painted wall has a strength that can withstand a load applied during use. Specifically, those having a compressive strength of 294 to 785 N / cm ² (30 to 80 kg / cm ² ) are preferable. More preferably, the compressive strength is 490 to 785 N / cm ² (50 to 80 kg / cm ² ).
As a characteristic of the painted wall, it has excellent moisture absorption and desorption. Specifically, a moisture absorption / release amount per 1 mm thickness of 50 to 150 g / m ² is obtained. Preferably, the moisture absorption / release amount is 70 to 130 g / m ² . The moisture absorption and desorption amount is a value measured under test conditions of 24 hr at 25 ° C. and 50% RH, 24 hr at 25 ° C. and 90% RH, and 24 hr at 25 ° C. and 50% RH.
[0018]
The painted wall may be a laminate in which a plurality of layers having different compositional composition or characteristics are laminated. A painted wall having a laminated structure of the painted wall layer of the present invention and a normal plaster layer can also be formed.
The painted wall can be used for finishing wall surfaces in various buildings such as indoor wall surfaces of ordinary houses. The wall surface includes not only a normal side wall but also a ceiling wall, an eaves bottom wall, a column wall, and the like.
[Earth]
As a material for the painted wall, various kinds of earth can be blended in addition to the siliceous shale granule. The surface color and texture of the painted wall can be changed by blending the earth. Characteristics such as strength and water absorption retention also change. Earths include clay, sand and other materials obtained from soil. Different soil types can be obtained depending on the region. The collected earth can be blended as it is, or it can be blended after being refined or processed. Specific examples of the earth include true sand, baked true sand, and clay.
[0019]
The amount of the earth can be set within a range that does not hinder the function and characteristics of the target siliceous shale granule. Specifically, 10 to 50 parts by weight of earth can be blended with 100 parts by weight of siliceous shale granule.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
[Painted wall]
The painted wall shown in FIG. 1 is a case where the painted wall is applied to interior finishing of a house.
The interior base material 12 supported by the crosspieces 14 is applied to the wall structure W of the house on the side facing the indoor space R. Plywood or gypsum board is used for the interior base material 12.
A painted wall material in which a material such as siliceous shale powder is blended is applied to the surface of the interior base material 12 to form a painted wall 10. The thickness of the painted wall 10 is set to 5 mm, for example.
[0021]
The painted wall 10 has a high moisture absorption / release property and can adjust the humidity of the indoor environment to an appropriate range. In addition, the siliceous shale powder particles on the painted wall 10 can efficiently adsorb and remove volatile gases, which are the causative substances of so-called sick house syndrome such as formaldehyde generated from the indoor environment or wall materials and furniture. . Moreover, since the painted wall 10 has high strength and durability, the painted wall 10 can be prevented from being peeled off or damaged even if a resident or furniture contacts the painted wall 10. Even if an external force is applied due to an earthquake or the like, the coated wall 10 can be prevented from cracking or chipping off.
(Painted wall material)
The specific composition of the painted wall material for constructing the painted wall 10 is shown.
[0022]
<Composition of coating wall material>
Silicous shale granule (average particle size 1.0 mm) 40 parts by weight gypsum 5 parts by weight aggregate 30 parts by weight inorganic salt conditioner 1.0 part by weight water 30 parts by weight Painted wall material contains ingredients other than water It is manufactured in the state of the granulated powder and is used for transportation and storage. During the construction of the painted wall, a predetermined amount of water is mixed and kneaded until a uniform paste is formed.
[0023]
The procedure and construction conditions for constructing the painted wall 10 using a paste-like painted wall material are in accordance with ordinary methods. What is necessary is just to apply | coat to the surface of the interior base material 12 by predetermined | prescribed thickness using a normal plastering tool. Usually cured by natural curing. A curing time of about 70 hours is sufficient.
The characteristics of the applied painted wall 10 are as follows.
<Characteristics of painted walls>
Density: 60-90 g / cm ³
Compressive strength: 294 to 785 N / cm ² (30 to 80 kg / cm ² )
Moisture absorption / release amount: 400 to 600 g / m ²
[0024]
【The invention's effect】
The coated wall according to the present invention is obtained by combining and integrating siliceous shale powder particles with a small amount of hydraulic binder by using an inorganic salt adjusting agent. The problem of the hydraulic binder blocking the surface of the siliceous shale granule and the inside of the pores is reduced.
As a result, the humidity control function, deodorization function, gas adsorption function, etc. possessed by the siliceous shale are efficiently exhibited. Since the bond between siliceous shale is strong, the mechanical strength is high and the durability is excellent. It is possible to prevent the occurrence of cracks and chipping after construction.
[Brief description of the drawings]
FIG. 1 is a sectional view showing a construction state of a painted wall representing an embodiment of the present invention.
10 painted wall 12 interior base material

Claims (6)

A siliceous shale granule with an average particle size of 0.1 to 30 mm
30 to 50 parts by weight of water with respect to 100 parts by weight of the siliceous shale granule, and 0.5 to 1.0 parts by weight of an inorganic salt adjusting agent with respect to 100 parts by weight of the siliceous shale granule In the presence of
A coated wall formed by combining and integrating 5 to 20 parts by weight of a hydraulic binder with respect to 100 parts by weight of the siliceous shale granule. The inorganic salt modifier is
30-50% by weight of calcium ions,
5 to 20% by weight of metal ions,
The painted wall of Claim 1 containing 5 to 15 weight% of potassium ions. The painted wall according to claim 1 or 2, wherein the hydraulic binder includes a material selected from cement, lime, and gypsum. The thickness is 0.3-2 cm,
The density is 70-90 g / cm ³ ;
The compressive strength is 294 to 785 N / cm ² (30 to 80 kg / cm ² );
The moisture absorption / release amount per 1 mm thickness is 50 to 150 g / m ² ,
The painted wall in any one of Claims 1-3. Siliceous shale granule having an average particle size of 0.1 to 30 mm;
0.5 to 1.0 parts by weight of an inorganic salt modifier with respect to 100 parts by weight of the siliceous shale granule,
A coated wall material comprising 5 to 20 parts by weight of a hydraulic binder with respect to 100 parts by weight of the siliceous shale granule. A method for constructing a painted wall in which a painted wall material is applied to the surface of the base material applied to the wall surface and dried and cured.
A step (a) of kneading the coated wall material according to claim 5 and 30 to 50 parts by weight of water with respect to 100 parts by weight of the coated wall material;
A method for constructing a painted wall, comprising the step (b) of applying the kneaded product obtained in the step (a) to a base material of the wall surface.

Images