JP2002308656A - Aggregate for plastering and plastering method using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively utilize a roof tile waste material as aggregate for plastering. SOLUTION: The plastering method comprises: crushing the roof tile waste material to obtain a crushed material used as aggregate, mixing the obtained aggregate with waster and a binder to produce a plastering material, and executing plastering work of a surface to be plastered by using the plastering material and hardening the plastering material, to form on the surface to-be-plastered a lightweight hardened plastering material layer capable of realizing high heat insulation properties and good moisture absorption/desorption properties.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aggregate for plasterers who can effectively use waste tiles discharged as industrial waste, and a plastering method using the same.

[0002]

2. Description of the Related Art A large amount of tiles used as roof materials for buildings such as houses are generated as tile waste materials due to rebuilding of buildings, renovation and renovation, and roof replacement.

[0003] Such tile waste material is usually carried into a landfill and used as a landfill material.

[0004]

According to the prior art, since the tile waste material is generally in the form of a curved plate, the transportation efficiency when transporting it to a landfill site is poor, and even if it is used as a landfill material. In addition, voids are easily generated in the ground, and the obtained ground strength is inferior, and it is not always the best treatment method.

Accordingly, an object of the present invention is to provide a plastering aggregate capable of effectively utilizing and processing the tile waste material by using the crushed tile waste material as an aggregate in view of the problems of the prior art. And providing plastering methods that use it.

[0006]

The gist of the first invention according to the present application for achieving the above object is to pulverize tile waste material.

[0007] The tile waste material may be adjusted to a particle size of 3 mm or less.

The gist of the second aspect of the invention is to knead the aggregate according to the first aspect of the invention, a binder, and water, and apply the kneaded material to a construction surface.

[0009]

According to the structure of the first aspect of the invention, the waste tile material can be effectively used as an aggregate for plasterers instead of mountain sand, river sand and sea sand by pulverizing. In addition,
Since the roof tile waste is fired at 1000 to 1300 ° C, the harmful lead elution amount is set to less than 0.005 mg / l,
It can be extremely small. In addition, the tile waste material does not release clay and does not become sticky even when water is added, so that plastering work is easy.

By adjusting the particle size of the waste tile material to 3 mm or less, it is possible to easily realize a higher finishing strength than when mountain sand, river sand or sea sand is used. In addition, the tile waste material is preferably pulverized by, for example, a roll crusher, and the particle size is adjusted through a multistage vibrating sieve. When crushed tile material is crushed, the yield rate of particle size 3mm or less is about 40%. When the upper limit of the particle size is reduced, the yield rate becomes too small, and when the upper limit of the particle size is too large, the finish after construction is completed. Strength decreases.

According to the second aspect of the invention, the aggregate according to the first aspect of the invention is kneaded with water and a binder to form a mortar-like fluid, which is applied to a construction surface, applied, and cured. Arbitrary construction surfaces such as wall surfaces, ceiling surfaces, and floor surfaces inside and outside the building can be finished. The construction surface to be finished in this way has a low thermal conductivity, excellent heat insulation, moderate moisture absorption and desorption, and a humidity control function, because the roof tile is porous. By appropriately determining the amount of use, it is possible to reduce the density and reduce the weight and to achieve a high finish strength, as compared with the case where plaster sand such as mountain sand, river sand, and sea sand is used as an aggregate. Further, since the tile waste material has a unique color, the construction surface can be finished in a unique color without using a pigment.

As the binder, Portland cement,
Hydraulic cements such as blast furnace cement, silica cement and fly ash cement, special cements such as alumina cement and ultra-rapid hardening cement, as well as plaster, dolomite plaster, gypsum plaster, or synthetic resin materials such as epoxy and urethane Can be used.
In addition, the water-cement ratio should be appropriately determined depending on the type of the binder. When the particle size of the aggregate is uniform, by setting the water cement ratio to about 30 to 50%,
Appropriate consistency and slump can be realized to optimize workability, and the finished strength can be made uniform and sufficiently large.

If a pigment or an admixture is added during kneading,
The pigment can color the binder to finish the construction surface with a predetermined texture, and the admixture can improve water retention, workability, and finish quality.

The pigment is preferably a hydrophilic inorganic pigment such as carbon, iron oxide, iron hydroxide, titanium oxide and chromium oxide. The pigment is adjusted to a particle size of about 100 to 300 μm, and About 1 to 3% by weight. As the binder at this time, it is preferable to use ordinary Portland cement or white Portland cement, dolomite plaster, gypsum plaster, or the like. The admixture is an AE agent that adds a few percent by weight to the binder,
Water-reducing agents, AE water-reducing agents, waterproofing agents, rubber latex added at a weight ratio of 5 to 20% with respect to the binder, polymers for cement admixture such as resin emulsions, and a weight ratio of about 10 to the binder. Add about 20% of slaked lime, dolomite plaster, fly ash, asbestos fiber powder, etc.
Species or two or more can be used.

[0015]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an example of the procedure of the plastering method using the waste tile material as an aggregate.

That is, the tile waste material is pulverized through a roll crusher or the like, and the particle size is adjusted to 3 mm or less to obtain aggregate. In addition, a construction surface such as a wall surface, a ceiling surface, and a floor surface is subjected to ground treatment by removing foreign matters, dust, and the like. The aggregate can be kneaded by adding a binder and water, applied to the ground-treated surface, applied and cured, thereby finishing the surface beautifully. In addition, the mortar obtained by kneading the aggregate and the binder is kneaded using a trowel, and has a thickness of 2 to the construction surface.
It is preferable to apply 30 mm. However, the coating thickness is 3mm
When the thickness is reduced below, the maximum particle size of the waste tile material is to be reduced accordingly.

FIG. 2 shows the finished density, flexural strength and compressive strength of the embodiment in which tile waste material is used as an aggregate and white Portland cement is used as a binder. However, in the example, the particle size was 3
mm or less, using 1.3kg / l of waste tile material as aggregate,
The density, flexural strength and compressive strength of a 28-year-old material were compared with a comparative example using plaster sand weighing 1.56 kg / l and diatomaceous earth weighing 0.44 kg / l as aggregate. The flexural strength and the compressive strength were measured according to JIS A1106 concrete flexural strength test and JIS A1108 concrete compressive strength test, and rectangular prism specimens of 4 cm × 4 cm × 16 cm were used.

That is, the specimens (1) to (3) of the examples
Is a comparative example (1) corresponding to a so-called 1: 3 mortar.
The flexural strength and the compressive strength are each 40 compared to (3).
%, Slightly more than 20%, and the density is slightly less than 10%, so that the weight can be reduced. In addition, specimen (1)-
In (3), the bending strength and the compressive strength are improved to about 3.5 times and about 2.4 times, respectively, as compared with Comparative Examples (4) to (6) using diatomaceous earth as an aggregate.

The same test data is shown in FIG. 3 for an embodiment in which tile waste is used as aggregate and gypsum plaster is used as binder.
Shown in Specimens (1) to (3) of Examples are Comparative Examples (1) to (3) equivalent to 1: 2 mortar using plaster sand as aggregate.
The bending strength was improved by slightly less than about 10%, and almost the same compressive strength was obtained. In addition, the bending strength and the compressive strength were improved by about 1.9 times and about 2.4 times, respectively, as compared with Comparative Examples (4) to (6) using diatomaceous earth as an aggregate.

FIG. 4 shows an example of the results of a moisture absorption / release test of an embodiment using waste tile material as an aggregate. However, the horizontal axis in FIG.
The elapsed time (h) is shown, and the vertical axis shows the weight change per unit area (g / m ² ).

In the moisture absorption / release test shown in FIG. 4, the relative humidity was changed to 40% and 90% every 24 hours at room temperature, and the weight change of the test body was measured with the passage of time.
However, the specimen was 200 mm x 20 mm on a non-absorbent panel.
A recess of 0 mm × 7 mm was formed, the mortar according to the example and the comparative example was filled into the recess and cured, and only one surface was exposed to the room. The specimens (1) and (2) of the example had the same composition as the specimens (1) to (3) of the example of FIG. 3, and the surfaces of the specimens were finished with a wooden iron and scraped. In Comparative Example (1), a diatomaceous earth having the same composition as Comparative Examples (4) to (6) in FIG. 3 was used as an aggregate, and a test specimen similar to the test specimen (1) in Example was produced. Comparative Example (2) is 200 mm ×
Only one side of a 200 mm vinyl cloth was exposed indoors.

According to FIG. 4, the specimens (1) and (2) are:
As compared with Comparative Example (1) using diatomaceous earth, it is possible to achieve moisture absorption and release properties comparable to those of Comparative Example (1).

In FIG. 1, one or both of an admixture and a pigment can be added in addition to the binder during the kneading with water.

[0025]

As described above, according to the first invention of the present application, by crushing the tile waste material, the tile waste material discharged as industrial waste is effectively used as an aggregate for plasterers. There is an excellent effect that you can.

According to the second invention, the aggregate according to the first invention, water and a binder are kneaded and applied to the construction surface, so that the aggregate is porous. High heat insulation and good moisture absorption / desorption properties can be realized, and there is an excellent effect that it can be suitably used for all applications such as inner and outer wall surfaces, ceiling surfaces and floor surfaces of buildings.

[Brief description of the drawings]

Fig. 1 Illustration of construction process

FIG. 2 is a table showing test data (1).

FIG. 3 is a table showing test data (2).

FIG. 4 is a diagram showing test data.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiroyuki Miyamoto 5-493-1, Yokaichi, Kanazawa-shi, Ishikawa Prefecture Within the ecosystem of a stock company. F Term in Construction Co., Ltd. (Reference) 4G012 PA30

Claims (3)

[Claims] An aggregate for plasterers obtained by crushing waste tile material. 2. The plastering aggregate according to claim 1, wherein the size of the tile waste material is adjusted to a particle size of 3 mm or less. 3. The aggregate according to claim 1 or 2,
A plastering method characterized by kneading a binder and water and constructing it on the construction surface.