Construction material for ground surface layer using fired clay

Abstract

A construction material using a fired clay is provided to be used as a construction material for ground surface layer so that the change of the surface can be decreased and draining can be improved. The construction material for ground surface layer is characterized by using a fired clay. In particular, the fired clay is obtained by mixing at least two materials selected from (a) a material obtained by drying and firing a natural clay containing up to 10% of iron at the temperature of 100 to 900 deg.C, (b) a material obtained by firing the natural clay at the temperature of 900 to 1100 deg.C and (c) a material obtained by firing the natural clay at the temperature of 1100 to 1600 deg.C, in the ratio of 90% or less, and then grinding the mixture into a particle having a diameter less than 4.76 mm.

Description

technical field

[0001] The present invention relates to a sports field surface construction material having different items of requirements for appropriate strength, elasticity, and sliding characteristics. More specifically, the present invention relates to a sports field surface construction material using a porous mixed calcined soil. It is prepared by mixing and pulverizing calcined soil obtained at different calcination temperatures. Background technique

[0002] The surface material of the sports field traditionally used is a material obtained by selecting and mixing natural soil such as loess (clay) or sandy soil (sandy soil). However, its disadvantage is that due to rain, snow, etc. If the content changes, the state of the surface layer of the sports field will change greatly, making it difficult to use for a long time.

[0003] On the other hand, artificial turf, urethane, rubber, acrylic latex and other chemical products used recently have disadvantages in that no...

Examples

Embodiment Construction

[0016] Hereinafter, the present invention will be described in more detail.

[0017] The mixed calcined soil (S) for sports field building materials of the present invention is calcined at three temperatures of 1600° C. or less, natural soil such as loess with a large clay content of 10% or less in iron powder content, and The calcined soils at different calcination temperatures were pulverized into substances with a particle size of 4.76 mm or less, and thus, the mixed calcined soil contained dispersed particles of different particle sizes. Calcined soil calcined at a high temperature exceeding 1600° C. has high hardness but is not suitable, and soil with a high sand content in the raw material is not suitable because it does not exhibit the inherent characteristics of calcined soil even after calcination. In addition, as the natural soil which is the raw material of the calcined soil, it is suitable to use a soil having a content of clay and silt of 50% by weight or more.

...

technical field

[0001] The present invention relates to a sports field surface construction material having different items of requirements for appropriate strength, elasticity, and sliding characteristics. More specifically, the present invention relates to a sports field surface construction material using a porous mixed calcined soil. It is prepared by mixing and pulverizing calcined soil obtained at different calcination temperatures. Background technique

[0002] The surface material of the sports field traditionally used is a material obtained by selecting and mixing natural soil such as loess (clay) or sandy soil (sandy soil). However, its disadvantage is that due to rain, snow, etc. If the content changes, the state of the surface layer of the sports field will change greatly, making it difficult to use for a long time.

[0003] On the other hand, artificial turf, urethane, rubber, acrylic latex and other chemical products used recently have disadvantages in that no...

Examples

Embodiment Construction

[0016] Hereinafter, the present invention will be described in more detail.

[0017] The mixed calcined soil (S) for sports field building materials of the present invention is calcined at three temperatures of 1600° C. or less, natural soil such as loess with a large clay content of 10% or less in iron powder content, and The calcined soils at different calcination temperatures were pulverized into substances with a particle size of 4.76 mm or less, and thus, the mixed calcined soil contained dispersed particles of different particle sizes. Calcined soil calcined at a high temperature exceeding 1600° C. has high hardness but is not suitable, and soil with a high sand content in the raw material is not suitable because it does not exhibit the inherent characteristics of calcined soil even after calcination. In addition, as the natural soil which is the raw material of the calcined soil, it is suitable to use a soil having a content of clay and silt of 50% by weight or more.

...