[DESCRIPTION]

[Invention Title]

INSULATING LOESS BLOCK AND MANUFACTURING METHOD THEREOF

[Technical Field]

The present invention relates to an insulating loess brick and a manufacturing method thereof, and more particularly, to an insulating loess brick that is configured to improve thermal insulating properties thereof by forming pores therein using pore forming particles (ice particles or frozen coal particles) and a manufacturing method thereof.

[Background Art]

Generally, since loess is well known to have various beneficial properties such as absorption of far-infrared rays, anti-microbial activity, humidity maintenance and the like, loess has been variously used for making makeup materials, dyes, paints, and building materials such as bricks, etc.

In recent years, as "sick house syndrome" attributable to formaldehyde generated from wallpaper and flooring materials using cement and various adhesives has been known, people are growing more and more interested in building materials using natural components. Therefore, various products, such as floor heater blocks, bricks, mortar and the like, have been developed by using the loess having the aforementioned well-known beneficial properties.

In particular, although loess must have predetermined rigidity and durability in order to be used in building materials, most loess bricks do not satisfy the predetermined rigidity and durability or have a loess content of 50% or less because of being manufactured with a large amount of cement contained therein in order to improve the rigidity. Therefore, there is a problem in that the beneficial properties of loess are reduced.

Further, since a loess brick, manufactured by compression-molding only loess to improve durability, has poor thermal insulating properties, there is a problem in that an insulating material must be additionally used in architectural construction.

In order to solve the problem of thermal insulating properties, conventionally, a loess brick is manufactured by mixing loess powder with straw to form a mixture and then compression-molding the mixture, and then the loess brick is sintered at a high temperature of 1000 ^° C or more. At this time, the straw is burned, and simultaneously pores are formed at the position of the straw. Thus, the loess brick has good thermal insulating properties because of the pores.

However, since the loess brick manufactured by the method must pass through a sintering process, the loess brick suffers from a practical problem in that its productivity is very low, its production costs are excessively high, and its various beneficial properties disappear while various microorganisms in the loess are killed in a high-temperature sintering process.

Moreover, conventionally, a method of manufacturing loess brick by mixing loess powder with coal powder to form a mixture and then compression- molding the mixture has been developed. However, this method is also problematic in that pores of the coal powder are charged with the loess powder, so that the pores are blocked, with the result that this loess brick does not thermal insulating properties.

[Disclosure]

[Technical Problem]

Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a method of an insulating loess brick, in which thermal insulating properties can be improved while maintaining various beneficial properties of loess by mixing pore forming particles (ice particles or frozen coal particles) with loess powder to form a mixture, compression-molding the mixture at predetermined pressure and then melting the pore forming particles at room temperature to naturally form the pores, and an insulating loess brick manufactured using the method.

[Technical Solution]

In order to accomplish the above objects, the present invention provides a method of manufacturing a loess brick having thermal insulating properties, in which a pore is formed in the loess brick in order to improve the thermal insulating properties, including: mixing a frozen pore forming particle with loess powder to form a mixture; compression-molding the mixture in a state in which the pore forming particle is frozen to form a loess brick; and placing the loess brick at room temperature to form a pore in the loess brick as a result of melting of the pore forming particle.

[Advantageous Effects]

According to the present invention, it is possible to form pores in a brick without conducting a sintering process and to maintain various beneficial properties of loess. [Description of Drawings]

FIG. 1 is a schematic view showing a frozen coal particle among pore forming particles of an insulating loess brick according to the present invention; and

FIGS. 2 and 3 are sectional views showing an insulating loess brick according to the present invention. [Best Mode]

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

According to an embodiment of the present invention, as shown in FIG. 1, ice particles obtained by freezing water, or frozen coal particles 10 in which the surface of coal particles 11 are covered with ice and the pores thereof are charged with the ice by dipping the coal particles 11 in the water, charging pores of coal with the water and then icing the pores charged with the water are used as pore forming particle.

In order to maintain the pore forming particles in a frozen state, the pore forming particles are mixed with loess powder at a proper volume ratio or weight ratio at a temperature of about -20°C.

In this case, among the pore forming particles, the frozen coal particles 10 are iced with the pores 12 of the coal particles 11 charged with the water and thus the pores are blocked by the iced water. As a result, the loess powder is prevented from being introduced into the pores.

Further, a molding process is conducted at a temperature of about -20°C such that the pore forming particles are maintained in a frozen state. In this case, the molding process is conducted using a compression-molding machine into which a mixture of the pore forming particle and loess powder has been put .

Meanwhile, when the molded loess brick is placed at room temperature, the pore forming particles in the loess brick naturally melt to form pores in the loess brick. As shown in FIG. 2, when the pore forming particles are ice particles, the ice particles in the loess brick 1 are melted to directly form pores 20 and, as shown in FIG. 3, when the pore forming particles are frozen coal particles 10, an ice layer covering the coal particles 11 and the ice in the pores 12 are melted to form pores 30 that are composed of the pores of the coal particles.

According to another embodiment of the present invention, when the molded loess brick 1 is forcibly heated not to room temperature but to a temperature of about 100°C, the pore forming particles in the loess brick are melted and then evaporated to form additional pores along discharge passages of vapor .

In this case, many pores, other than the pores 20 and 30 formed by the pore forming particles, exist inside of the loess brick 1, whereby the thermal insulating properties thereof are further improved. [Industrial Applicability]

The present invention is practical in that pores can be formed in a brick without performing a sintering process, and thermal insulating properties can be secured by the formation of pores in the brick while maintaining various beneficial properties of loess.