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Composite for building material, and method of manufacturing building material using the same

外国特許コード F070001787
整理番号 F070001787
掲載日 2008年1月18日
出願国 アメリカ合衆国
出願番号 31738905
公報番号 20060130710
公報番号 7147707
出願日 平成17年12月22日(2005.12.22)
公報発行日 平成18年6月22日(2006.6.22)
公報発行日 平成18年12月12日(2006.12.12)
優先権データ
  • 特願2002-064614 (2002.3.11) JP
  • 特願2002-250677 (2002.8.29) JP
  • 11/149,382 (2005.6.9) US
  • 10/370,318 (2003.2.19) US
発明の名称 (英語) Composite for building material, and method of manufacturing building material using the same
発明の概要(英語) To provide a composite for a building material capable of manufacturing a building material that is harmless to living environment and global environment and can be recycled.
The composite for a building material contains diatomaceous earth, waste lumber, and inorganic hardener, or further contains field earth, and, as necessary, contains used paper and/or crushed pieces of used tatami mat and used tile, and crushed earth.
The composite for a building material is prepared by homogeneously mixing the components, and then the building material is manufactured by molding and curing the composite.
The manufactured building material has a high humidity conditioning property as in the case of the conventional mud wall made of coarse clay, and is easily recycled by being crushed.
Moreover, this building material does not cause hypersensitiveness to chemical substances because it produces no chemical substances, and has a feel of earth so that earthen walls and flower beds made by using this building material integrate well with an appearance of ancient city and are in harmony with beautiful appearance of houses properly.
従来技術、競合技術の概要(英語) BACKGROUND OF THE INVENTION
1.
Field of the Invention
The present invention relates to a composite for a building material and a method of manufacturing a building material using the composite.
More particularly, it relates to a composite for a building material such as a rough wall panel for a bearing wall, a heat-insulating/soundproof panel, and a block material for a mud wall and a flower bed, and a method of manufacturing a building material using the composite.
2. Description of the Related Art
Nowadays, plastic boards, and inorganic boards such as calcium silicate boards and gypsum boards are used as a building material in large numbers.
However, the plastic board causes hypersensitiveness to chemical substances due to chemical substances such as formalin generated from the board, which presents a big social problem.
Also, for the inorganic board, whose low cost and high function have been realized and which has been capable of being mass-produced, it is difficult to recycle the board after use, and the board is disposed of as industrial wastes without being treated, which presents a big problem.
On the other hand, the effective use of various industrial wastes has recently been studied from the viewpoint of global environmental protection.
For example, a building material using paper making sludge has been proposed in Japanese Patent Laid- Open No. 2001-11799, an example in which used paper having been broken to pieces and wastes of used synthetic resin sheets are used has been proposed in Japanese Patent Laid-Open No. 2000-302535, and an example in which waste casting sand is used has been proposed in Japanese Patent Laid-Open No. 2000-220247.
In any case, however, like the plastic board and inorganic board, the problem of hypersensitiveness to chemical substances and the problem of disposal as industrial wastes after use remain unsolved.
Contrarily, a mud wall, etc. using clay, which have been used from ancient times in Japan, not only provide a comfortable living environment in Japan's hot and humid environment because of their high humidity conditioning property but also present little of the problem of disposal as industrial wastes because of its ease of recycling.
However, the mud wall, etc. using clay require a long period of time for their work, and also have poor resistance to earthquake, so that the demand for them has decreased year by year.
In view of such a present situation, the inventors have continued studies earnestly and resultantly have found the fact described below.
If a building material is manufactured by using a composite for a building material containing diatomaceous earth, waste lumber, and inorganic hardener for cement mud wall, or a composite for a building material further containing field earth, used paper, etc., a building material can be obtained which has a high humidity conditioning property and thus provides a comfortable living environment as in the case of the conventional mud wall, and is easily recycled; for example, it can be reused merely by crushing the obtained building material, and is harmless to global environment because industrial wastes, for example, waste lumber such as lumber chip, sawdust, shavings, and crushed pieces of fallen tree, used paper and/or crushed pieces of used tatami mat and used tile, and crushed earth can also be used as a raw material.
As the result of the findings, we completed the present invention.

特許請求の範囲(英語) [claim1]
1. A composite for a building material comprising: diatomaceous earth;
waste lumber;
and
inorganic hardener for cement mud wall which is a composition consisting of within the indicated percentage ranges: Portland cement, about 45 to 60 wt %;
an inorganic rapid-curing agent, about 20 to 27 wt %;
an inorganic shrinkage-retarding agent, about 8 to 10 wt %;
an organic pigment, about 10 to 13 wt %;
a powder of silica, about 5 to 7 wt %;
and a surface-active agent, about 0.7 to 0.9 wt %.
[claim2]
2. The composite for a building material according to claim 1, wherein said diatomaceous earth is 10 to 50 percent by weight, based on a total weight of the composite;
said waste lumber is 5 to 30 percent by weight, based on a total weight of the composite and said inorganic hardener for cement mud wall is 10 to 80 percent by weight, based on a total weight of the composite.
[claim3]
3. The composite for a building material according to claim 1, further comprising field earth.
[claim4]
4. The composite for a building material according to claim 3, wherein said field earth is 5 to 40 percent by weight, based on the total weight of the composite.
[claim5]
5. The composite for a building material according to claim 1, wherein said composite further comprises at least one substance selected from the group consisting of;
used paper;
crushed pieces of used tatami mat;
crushed pieces of used tile;
and crushed earth.
[claim6]
6. The composite for a building material according to claim 5, wherein when at least one of said used paper, crushed pieces of used tatami mat;
crushed pieces of used tile;
and said crushed earth is present, the content of said used paper, said crushed pieces of used tatami mat;
said crushed pieces of used tile;
and said crushed earth is 10 to 30 percent by weight, based on the total weight of the composite.
[claim7]
7. The composite of claim 1, wherein said inorganic hardener is a composition consisting of Portland cement, about 48.4 wt %;
an inorganic rapid-curing agent, about 24.2 wt %;
an inorganic shrinkage-retarding agent, about 8.8 wt %;
an organic pigment, about 12 wt %;
a powder of silica about 6 wt %;
and a surface-active agent, about 0.8 wt %.
[claim8]
8. A method of manufacturing a building material, comprising;
homogeneously mixing diatomaceous earth, waste lumber, and water to form a homogeneous mixture;
mixing an inorganic hardener for cement mud wall with said homogeneous mixture, to produce a composite for a building material;molding the composite for a building material;curing the molded composite for a building material, to produce said building material;and wherein said inorganic hardener is a composition consisting of within the indicated percentage ranges: Portland cement, about 45 to 60 wt %;
an inorganic rapid-curing agent, about 20 to 27 wt %;
an inorganic shrinkage-retarding agent, about 8 to 10 wt %;
an inorganic pigment, about 10 to 13 wt %, a powder of silica, about 5 to 7 wt %;
and a surface-active agent, about 0.7 to 0.9 wt %.
[claim9]
9. A method of manufacturing a building material, comprising;
homogeneously mixing diatomaceous earth, waste lumber, field earth, and water, to form a homogeneous mixture;mixing an inorganic hardener for cement mud wall with said homogeneous mixture, to produce a composite for a building material;molding the composite for a building material;curing the molded composite for a building material, to produce said building materialand wherein said inorganic hardener is a composition consisting of within the indicated percentage ranges: Portland cement, about 45 to 60 wt %;
an inorganic rapid-curing agent, about 20 to 27 wt %;
an inorganic shrinkage-retarding agent, about 8 to 10 wt %;
an organic pigment, about 10 to 13 wt %;
a powder of silica, about 5 to 7 wt %;
and a surface-active agent, about 0.7 to 0.9 wt %.
[claim10]
10. The method of manufacturing a building material according to claim 8 or 9, further comprising mixing at least one of;
used paper;
crushed pieces of used tatami mat;
crushed pieces of used tile;
and crushed earth with said homogeneous mixture.
[claim11]
11. The method of manufacturing a building material according to claim 8 or 9, wherein the said molding comprises slip casting of said composite for a building material.
[claim12]
12. The method of manufacturing a building material according to claim 8 or 9, wherein the said molding comprises extrusion molding of said composite for a building material.
  • 発明者/出願人(英語)
  • MURAKAMI HIROSHI
  • SUZUKI YOSHIYUKI
  • GOTOU MASAMI
  • KANAZAWA INSTITUTE OF TECHNOLOGY
国際特許分類(IPC)
米国特許分類/主・副
  • 106/720
  • 106/606
  • 106/607
  • 106/718
  • 106/719
  • 106/721
  • 106/811
  • 106/812
  • 264/333
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