KR100892084B1 - Clay composites with properties of wood - Google Patents

Abstract

A clay composition with soil and wood-based properties is provided to secure natural patterns and insulation properties resulting from wood and show deodorization and hygroscopicity properties resulting from soil. A clay composition with wood-based properties comprises the 60~95wt% of inorganic non-sintered clay, the 1~20wt% of wooden fiber and the 4~20wt% of wooden chips. The non-sintered clay contains the 50~90 wt% of clay, the 2~30 wt% of lime, the 4~48 wt% of blast furnace slag, the 0.04~0.9wt% of alkali and water. The wooden fiber is selected among Straw, Heather, Branches, Coniferous needles, Hemp, Flax, Fine Wheat fibres and Paperfibres. Each wooden fiber is 2~3cm in length. The wooden chips indicate small pieces of timber which is cut along the grain of the timber to be used for fuel, pulp and fiberboard(10).

Description

Clay Composites with Properties of Wood

The present invention relates to a clay composition having wood-based properties, comprising mixing fibers and wood chips with non-fired clay, simultaneously having wood and clay excellent performance, and having wood-based properties with a bio-active surface. It relates to a clay composition provided.

Existing wood products are preservatively treated with arsenic (As), which is a highly toxic chemical, or chromium (Cr), which is regulated as a carcinogen. The use of aldehydes (HCHO) and the like is limited worldwide.

In recent years, natural wood is desperately needed as an eco-friendly and harmless building material, and many buildings using wood have been introduced around the world. Natural wood has the advantages of being easy to work with, elastic, large sound absorption, elegant in appearance, and good in touch.However, the material is not uniform, has great expansion and contraction, durability, heat resistance, and is easy to corrode. There is a disadvantage that there is a problem of restriction of use.

In addition, since soil uses natural state, it consumes less energy than other building materials and there is no room for exposure to carcinogens that are harmful to human body. Moreover, it can be reused as natural soil for disposal as well as for construction purposes. Reusable.

However, the general soil composition has a weakness in the compressive strength and tensile strength, there are many problems to be used as a building material.

The present invention is to solve the above problems, the object is to provide a clay composition having both soil and wood-based properties by mixing non-baked clay, fiber and wood chips.

Still another object of the present invention is to provide a clay composition having advantages such as deodorization, moisture absorption, and moisture absorption, which are the characteristics of soil in nature.

Still another object of the present invention is to provide a clay composition which can be used simultaneously as interior materials, finishing materials and structural materials with beautiful patterns and thermal insulation properties of wood.

Another object of the present invention is a mixture of a non-plastic clay composition and a wood-based system, which not only increases the tensile strength, which is a disadvantage of the soil, but also solves a part of the wood that is weak to fire and shrinks and expands due to moisture. It is to provide a composition.

Still another object of the present invention is to manufacture a board, sound absorbing material, insulation, etc. to replace the existing wood products and soil products at the same time by preventing the shrinkage and cracking of the soil by the solidification action of the soil and lime and to increase the tensile strength. To provide a clay composition that can be.

Still another object of the present invention is to provide a clay composition containing wood chips, which can produce various surfaces and colors.

The present invention is intended to include 60 to 95 wt% of inorganic non-fired clay, 1 to 20 wt% of wood fiber, and 4 to 20 wt% of wood chips.

The wood fibers have a length of 2-3 cm, and at least one selected from Straw, Heather, Branches, Coniferous needles, Hemp, Flax, Fine Wheat fibers, and Paper fibers is added.

The wood chips are added to select wood chips finely crushed by a chipper or cut into pieces of wood grain for use as raw materials for power generation fuel, pulp and fiberboard.

The inorganic non-fired clay is composed of 50 to 90 wt% of clay, 2 to 30 wt% of lime, 4 to 48 wt% of blast furnace slag, 0.04 to 0.9 wt% of alkaline agent, and 100 wt% of the rest as water.

According to the present invention, after the wood fiber and wood chips are added and stirred to the inorganic non-fired clay material, the present invention has both soil and wood-based characteristics.

That is, the present invention is, firstly, by adding wood fiber and wood chips to clay, thereby improving the tensile strength, which is a weak point of clay, to the effect of compensating for weaknesses such as brittleness, and secondly, existing building products. It has the effect of expressing various surfaces by using wood chips away from the monotonous color of the product. Third, it has the deodorizing and hygroscopic function, which is the advantage of soil, and has the beautiful pattern, insulation, and non-combustibility, which are the advantages of wood. have.

In addition, the present invention can form a building material having excellent properties by the optimal combination of inorganic non-plastic clay and wood fibers and wood chips, it can be applied to various construction fields.

In addition, the present invention is made of an environmentally friendly material, it can have a beautiful appearance when utilized as building interior and exterior materials, there is a lot of effects such as environmental pollution does not occur even when disposed.

The present invention is intended to include 60 to 95 wt% of inorganic non-fired clay, 1 to 20 wt% of wood fiber, and 4 to 20 wt% of wood chips.

The wood fibers and wood chips are added to increase the tensile strength and shrinkage rate, which are disadvantages of clay, and select one or more of Straw, Heather, Branches, Coniferous needles, Hemp, Flax, Fine Wheat fibers, and Paper fibers. do. In addition, the wood fibers have a length of 2-3 cm.

When the wood fiber as described above is added less than 1wt%, it is difficult to expect the effect, when added in excess of 20wt%, it is not effective in increasing the strength and adversely affect the overall physical properties such as mixing, It is added within an appropriate range.

In addition, the wood fiber is not particularly limited to its length, but preferably has a suitable length of 2-3 cm for uniform mixing with clay.

The wood chips are added to produce a variety of insulation and various wooden surfaces, when less than 4wt%, it is difficult to expect the intended effect, when added to more than 20wt%, adverse effects on strength and workability Add to within the appropriate range because it will cause.

The wood chips are added to select wood chips finely crushed by a chipper or cut into pieces of wood grain for use as raw materials for power generation fuel, pulp and fiberboard.

The wood chips can be used having a variety of sizes and shapes depending on the purpose of use. As an example, the wood chip may have a size of 30 × 50 mm or less (width × length), a water content of 25 to 60%, and a dry weight of 200 to 350 kg / m 3.

In addition, the wood chips can be applied by varying the type and pattern added depending on the application and varieties applied. That is, the wood chips are provided with various types and patterns by cutting method, and after selecting the appropriate wood chips according to the construction and civil use of interior brick, plastering and earth board, such as construction materials It is molded and used.

The inorganic non-plastic clay is composed of 50 to 90 wt% of clay, 2 to 30 wt% of lime, 4 to 48 wt% of blast furnace slag, 0.04 to 0.9 wt% of alkaline agent, and 100 wt% of the rest as water. It has high strength through agglomeration reaction, pozzolanic reaction and latent hydraulic reaction.

)와 반응하여 이온교환반응 및 포졸란 반응을 일으킨다.The clay is to include all the soil of the general concept such as primary clay (remaining clay), secondary clay (target clay), mud, ocher, kaolin, etc., as well as active and calcined soil produced by drying the clay at a high temperature. , 50 to 90wt%, lime added as a reactive additive (

) Causes ion exchange reactions and pozzolanic reactions.

)는 점토분말의 단결화를 통해 점토강도를 향상시키는 것으로, 이온교환반응 및 포졸란 반응이 충분히 수행될 수 있도록 2∼30 wt%를 첨가한다. The lime (

) Is to improve the clay strength through the unity of the clay powder, 2 ~ 30 wt% is added to sufficiently perform the ion exchange reaction and pozzolanic reaction.

The blast furnace slag (BLAST FURNACE SLAG) refers to the slag generated when making pig iron from iron ore in the blast furnace, having 4 to 48 wt%, is produced at a high temperature (1,350 ℃ ~ 1,550 ℃) when manufacturing iron in the blast furnace And latent hydraulic properties.

,

, 소석회(

),

,

,

, 백반(명반석), 물유리(규산소다) 등을 단독으로 사용하거나, 하나 이상을 첨가하며, 바람직하게는

, 소석회(

)+

를 사용한다. 이때, 상기 알칼리제는 고로슬래그 100 wt%에 대하여 약 1∼6 wt% 즉, 본 발명 전체 중량의 0.04∼0.9 wt% 를 첨가한다. The alkali agent is added to promote the latent hydraulic reaction of blast furnace slag,

,

, Slaked lime (

),

,

,

, Alum (alum alum), water glass (soda silicate), etc. may be used alone, or one or more may be added, preferably

, Slaked lime (

) +

Use At this time, the alkaline agent is added to about 1 to 6 wt%, that is, 0.04 to 0.9 wt% of the total weight of the present invention based on 100 wt% of the blast furnace slag.

Since the inorganic non-fired clay made as described above is a patent registration No. 0348688 filed and registered by the applicant of the present invention, a detailed description thereof will be omitted.

As described above, the present invention is to solve the disadvantages of the non-plastic clay and wood and to take advantage of the advantages, after the addition of wood fiber to the non-plastic clay to stir, the wood for the thermal insulation performance and various wood surface realization The chip is added and molded to form a building material having excellent physical properties by mutual reaction between non-fired clay, wood fibers and wood chips.

That is, the present invention, as shown in Figure 1, while maintaining the properties of the soil as an inorganic material, while maintaining the advantages of the bio-active surface, such as deodorization, moisture absorption and moisture-proof characteristics of the soil, such as the feeling of living wood in the building materials That is, it is possible to exhibit all the functions such as the beautiful pattern and thermal insulation of the wood system.

Hereinafter, the present invention will be described in detail by way of examples.

Example 1

As application examples of general clay products, 60 ~ 95wt% of inorganic non-plastic clay, 1 ~ 20wt% of wood fiber, and 4 ~ 20wt% of wood chips are mixed within the range, and the effect on compressive strength is shown in [Table 1]. .

As shown in Table 1, the samples within the mixed weight range of the present invention have excellent compressive and flexural strengths due to the smooth chemical reactions and ionic reactions of soil and wood, and have beautiful and diverse surfaces of bricks. Samples outside the mixed weight range of were less than the compressive and flexural strength of the present invention and a lot of microcracks occurred on the surface.

Table 1

Example 2

As an example of application of general clay products, 60 to 95 wt% of inorganic non-plastic clay composition, 1 to 20 wt% of wood fiber, and 4 to 20 wt% of wood chips are mixed within the range, and the effect on moisture absorption and deodorization performance is shown in [Table 2]. Indicated.

As shown in [Table 2], the sample within the mixed weight range of the present invention has excellent moisture absorption and deodorizing performance of soil and wood, whereas the sample outside the mixed weight range of the present invention is absorbed and deodorized compared to the present invention. The performance was measured low.

[Table 2]

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

1 is an exemplary view showing the configuration of a molded building material according to the present invention

* Explanation of symbols for main parts of the drawings

(10): building materials

Claims (7)

60 to 95 wt% of inorganic non-fired clay, 1 to 20 wt% of wood fiber, and 4 to 20 wt% of wood chips, The non-fired clay is composed of 50 to 90 wt% of clay, 2 to 30 wt% of lime, 4 to 48 wt% of blast furnace slag, 0.04 to 0.9 wt% of alkaline agent, and 100 wt% of the remainder as water. Clay composition with characteristics. The method according to claim 1; The wood fiber is a clay composition having wood-based characteristics, characterized in that the addition of one or more selected from Straw, Heather, Branches, Coniferous needles, Hemp, Flax, Fine Wheat fibers, Paper fibers. The method according to claim 1 or 2; The wood fiber is a clay composition with wood-based characteristics, characterized in that having a length of 2-3cm. The method according to claim 1 or 2; The wood chip is a clay composition having wood-based characteristics, characterized in that the wood chips are cut into pieces or thinly cut according to the wood grain texture for use as a raw material for power generation fuel, pulp and fiber board (纖維板). delete delete delete

Images