KR0131052B1 - Paving for roads - Google Patents

Abstract

To provide a permeable sidewalk block that holds a low manufacture cost, fly ash coagulation particles 60-80wt% containing a diameter of within 10mm and waste glass powder 20-40wt% containing a diameter within 1mm constitute a lower side and a plasticized material of lamentation or clay particles containing a diameter of within 3mm that is given an enamel treatment constitutes a top surface part.

Description

Lightweight, Permeable Press Block and Manufacturing Method

The present invention relates to a water-permeable sidewalk block, and more particularly, to a light-weight, water-permeable sidewalk block including waste glass, fly ash, and the like.

Conventional sidewalk blocks do not pass water like ordinary bricks. In this case, the rain from heavy rains or rainy seasons causes trouble on the sidewalks, and the sidewalks overflow the road. There was a problem that caused a great inconvenience in the traffic of the vehicle.

As a technique for solving such a problem, there is a special brick mainly made of porous ceramic material as disclosed in Korean Patent Publication No. 91-1935. This technique covers each surface of porcelain materials with a glassy material such as frit or a melting agent such as lime, zinc oxide, barium carbonate, or feldspar, and combines the particles with each other. The particles of the crushed material such as large tiles are covered with a glass material such as frit or a base layer in which the entire surfaces are covered with a melting agent such as lime, zinc oxide, barium carbonate, feldspar and the particles are bonded to each other.

However, the technology has high permeability and resistance to sea damage, but its high specific gravity makes it difficult to transport and construct, and it is difficult to obtain crushed materials such as porcelain material, which is the main material of the surface layer, and tile, which is the main material of the base layer, and relatively high manufacturing cost. There is a problem.

The present invention has been made in view of the above problems, and a first object of the present invention is to provide a permeable sidewalk block having high water permeability and freeze resistance but low specific gravity and low manufacturing cost. Another object of the present invention is to recycle waste glass and fly ash, which are now mostly disposed of as industrial waste.

The present inventors have studied in order to achieve the above object, and when the waste glass is used as a binder and the coagulum of fly ash is used as a main raw material, it is possible to obtain a press block having excellent cold resistance, light weight and water permeability at low manufacturing cost. It was revealed to me.

That is, the present invention is a surface layer consisting of 60-80% by weight of fly ash coagulant having a particle diameter of 10 mm and 20-40% by weight of waste glass, and a ceramic or clay material having a particle diameter of 3 mm and a suitable pigment and glaze. It is characterized in that the configuration. In addition, the manufacturing method of the present invention is characterized in that they are produced by firing for about 24 hours at a temperature of 1100 to 1200 ℃ after pressing in the mold in order.

Hereinafter, the present invention will be described in detail.

Fly ash, which is the main raw material of the base portion of the present invention, is a waste generated after coal is burned, and is currently produced in millions of tons annually in Korea alone. Fly ash is a spherical fine particle with a particle size of 100 microns or less, so when it is landfilled, the ground of the landfill is weakened, and the landfilled fly ash is pushed to the surface by the pressure of the ground to generate dust. As land is devastated for hundreds of years, its recycling is a global concern.

Fly ash is a spherical fine particles, there is a problem that is difficult to solidify. Recently, however, a technique for effectively solidifying such a fly ash has been disclosed in Korean Patent Publication No. 93-5252. In this publication, a fly ash and a high concentration of sodium hydroxide solution are mixed and molded, and then fired at a temperature of 600-1400 ° C. to solidify the fly ash.

In the present invention, the fly ash coagulated product prepared by the above technique is used as the main raw material of the base portion. Since the diameter of the particles used in the base portion is preferably about 1-10 mm, the coagulated product prepared by the above technique may be crushed, and then the appropriate size may be selected and used. It is more preferable to cut off and use water.

Waste glass used in the present invention is to dry the sludge (sludge) after the waste water treatment of the abrasive cleaning water generated by the manufacturer of the glass for CRT glass and ground to 1mm or less in diameter. Inorganic wastewater treatment sludge is also a setting that is currently not disposed of and recycled in its entirety.

The base portion of the present invention is composed of the fly ash coagulum, waste glass, and a small amount of binder. The proper use ratio of fly ash coagulant and waste glass is 60-80: 20-40, and 1-5 weight of binder such as starch or glucose to impart moldability to 100 parts by weight of the sum of fly ash coagulum and waste glass. Part and 10-20 parts by weight of water are added to knead the mold.

The raw material of the surface layer portion of the present invention is an inorganic pigment of a desired color and a small amount of water to a pulverized product of clay or clay, and then molded and dried by adding a glaze into spherical particles having a maximum diameter of 3 mm or less. For the appearance of bright colors, it is preferable that the clay does not contain iron when used.

A molded article consisting of the surface layer portion and the base layer portion is obtained by sequentially placing the base layer portion and the surface layer portion prepared in the above into a mold at a ratio of about 5: 1 and compression molding with a press molding machine. The molded product thus obtained is dried and then calcined at a temperature of 1100-1200 ° C. for about 24 hours to cause the waste glass particles to melt and strongly bind the fly ash coagulum particles in the base portion, and also to combine the surface layer portion and the substrate portion. . In addition, continuous voids are formed between the particles bonded by melting and recrystallization of the waste glass, thereby making the molded body permeable. Suitable surface layers are 1 cm thick and the base layer is 5 cm thick.

The base portion may add waste red brick crushed powder within a range less than the amount of fly ash used.

Embodiments of the present invention are as follows.

Example 1

150 g of 25% glucose solution was added to 300 g of particles (waste glass) dried and pulverized by treating the sludge after wastewater treatment with 1000 g of fly ash solidified particles having a particle diameter of 1-10 mm and a brown tube abrasive washing water having a particle diameter of less than 1 mm. Prepared as a raw material.

Meanwhile, 15 g of pigment and 30 g of water were added to 285 g of pottery powder of 30 mesh or less, mixed well, and then molded into a particle size of 2.5 mm or less, and dried to abrasion resistant particles obtained by firing at a temperature of 1,150 ° C. to mix 90 g of glaze. Prepared as a raw material of.

Put the raw material of the base portion in the mold of the block first, and then put the raw material of the surface portion on the press and press-molded by pressing to dry at 70 ℃ for 2 days, and then put into the firing furnace at a temperature of 1,160 ℃ for 24 hours Firing was performed to prepare a water permeable press block of 200 mm x 100 mm x 60 mm.

Example 2

In the same manner as in Example 1, but added to the fly ash coagulation particles were changed to 500g.

Example 3

In the same manner as in Example 1, but added to the fly ash coagulated particles were changed to 800g.

Example 4

The same procedure as in Example 1 was carried out, but the input waste glass particles were changed to 200 g.

Example 5

The same procedure as in Example 1 was carried out, but the input waste glass particles were changed to 400 g.

Comparative Example 1

In the same manner as in Example 1, but added to the fly ash coagulated particles were changed to 1,200g.

Comparative Example 2

The same procedure as in Example 1 was carried out, but the waste glass particles added were changed to 100 g.

Comparative Example 3

The same procedure as in Example 1 was carried out, but the input waste glass particles were changed to 500 g.

[Comparative Example 4]

Instead of 1,000 g of fly ash coagulant of Example 1, 1,500 g of waste ceramic crushed particles were added thereto.

Example 6

Instead of 1,000 g of fly ash coagulant of Example 1, 500 g of fly ash coagulum and 400 g of waste red brick crushed particles were added thereto.

The physical property evaluation results of the sidewalk blocks obtained by the above Examples and Comparative Examples are shown in Table 1 below.

* Freeze resistance test; After soaking in water at room temperature for 10 hours, immediately put it in -10 ℃ thermostat and leave it for 1 hour, take it out and dissolve in water at 25 ℃ for 30 minutes, it is good to withstand 500 tests. .

Claims (6)

Surface layer glazed to a fired product of clay or clay particles having a particle diameter of less than 10 mm, consisting of 60 to 80% by weight of fly ash coagulated particles, 20 to 40% by weight of waste glass powder of less than 1 mm in diameter, and particles of 3 mm or less in diameter. Lightweight permeable sidewalk block, characterized in that consisting of. The lightweight water-permeable sidewalk block according to claim 1, wherein the thickness ratio between the base portion and the surface portion is inverse 5: 1. The lightweight water permeable sidewalk block according to claim 1, wherein an inorganic pigment is further added to the surface layer portion. The light-permeable sidewalk block according to claim 1, wherein the waste glass powder is pulverized by drying the sludge (sludge) in which the abrasive washing water of the glass for CRT is wastewater treated. The lightweight water-permeable sidewalk block according to claim 1, wherein the waste red brick grinding material is further added. The method of claim 1, wherein the base portion and the surface layer portion of the substrate described above are sequentially put into a mold and compression molded, and then calcined at a temperature of 1100-1200 ° C. for about 24 hours.