JPH09286654A - Production of concrete product mixed with powdery glass particle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the amount of gravel used in the production and to improve safety and reflection characteristics of the concrete product by mixing concrete with powdery glass particles or glass beads, formed into a safe shape, forming the resulting mixture into a formed body and solidifying the formed body. SOLUTION: In this production, glass classified according to color is coarsely crushed with a crusher into cullet and the angular edges of the crushed surfaces of the cullet fragments are removed by frictional impact applied to the cullet with a stationary blade(s) and a rotary blade(s). Then, the resulting cullet fragments are sucked through a bag filter into a cyclone dust collector and there, the residual angular edges of the cullet fragments are completely removed by the effect of friction among the cullet fragments themselves due to a rotational flow generated during passage of the cullet through a cylindrical tube to form powdery glass particles or glass beads, each of which has a 1 to 3mm particle diameter and a 16 to 6 mesh particle size. Thereafter, aggregate obtained by mixing 20 to 50% of the powdery glass particles or glass beads with gravel, cement and water are mixed together and the resulting mixture is formed into a formed body and then, the formed body is solidified to produce the objective concrete product.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a method for producing a concrete product containing glass powder particles.

[0002]

2. Description of the Related Art A conventional concrete product, for example, a method for manufacturing a concrete block, is to put a mixture of an appropriate amount of water, sand and gravel in cement into a formwork regardless of the presence of rebar, take out after natural drying, It was molded according to the purpose of the block and used as a retaining wall, a boundary between a road and a human road, a stone wall, a fish reef, a wave barrier, etc.

[0003]

Conventional concrete products and the like have been manufactured mainly with sand and gravel. At present, the places where sea sand is collected are limited, and it is the current situation that the demand cannot be met. Further, the collected sea sand is mixed into the cement without being washed or processed, so that there is a problem that it corrodes the reinforcing bars in the cement and has no durability.

[0004] Further, when sea sand is collected, there are problems that not only changes in tidal current but waste of resources and obstacles to growth of marine products.

In view of the above problems, the present invention aims to prevent the destruction of the natural environment and to reduce the amount of gravel by mixing glass powder particles in place of gravel in the production of concrete products. Not only can the traveling range of the vehicle be confirmed by the light-reflecting characteristics of the glass powder particles mixed in the, but also the inexpensive concrete product can be provided by the effective reuse of the waste.

[0006]

In order to achieve the above object, the invention according to claim 1 of the present invention, in the production of a concrete product, the sand and the crushed glass are made into a non-dangerous shape instead of gravel. It is a method for producing a concrete product, characterized in that glass powder particles or glass beads are mixed and molded and solidified.

The second aspect of the present invention is characterized in that the surface of the concrete block obtained in the first aspect is ground to obtain a smooth surface and gloss.

According to a third aspect of the present invention, in the process of producing glass cullet by finely crushing waste glass into a crusher by a crusher, the glass cullet is produced by frictional impact between a fixed blade and a rotary blade. While the glass cullet that has fallen due to the friction treatment is sucked into the cyclone dust collector by the bag filter and passes through the curved part in the tube cylinder, the glass cullet is completely rubbed by the mutual frictional action of the glass cullet. To produce glass powder particles that are not dangerous.

In the production of concrete products, such as concrete blocks, the present invention removes dangerous corners of glass cullet by rubbing the glass cullet crushed from waste glass and completely removing the corners by dust collection. The removed glass cullet is mixed with sand instead of being mixed with gravel, and the surface of the block solidified by molding is smoothed and a concrete block is formed by using a polishing means in order to give a glass luster. Needless to say, it is possible to manufacture a block having reflectivity by mixing glass cullet and beads.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with respect to a method for manufacturing a concrete product, such as a concrete block, into which glass powder particles are mixed, and a method for manufacturing glass powder particles.

The embodiment of the invention shown in claim 1 is
The aggregate is different depending on the use of the concrete block. That is, the gravel and sand conventionally added to cement are called river sand, gravel, and sea sand depending on the location (river, land, mountain, sea), and the breakdown of the amount of gravel and sand collected in 1990 is for reference only. It is as shown in Table 1 below.

[0012]

[Table 1]

As shown in Table 1 above, cement is generally mixed with sand, gravel, etc. as an aggregate and water is added to form a concrete product, which is mixed when the concrete block of the present invention is manufactured. The aggregates are mixed with the glass cullet formed by crushing and removing the risk. Instead of gravel, the particles of the glass cullet have medium size, that is, a particle size of 3 to 15 mm. About 20 to 50% of glass cullet is mixed with cement in the conventional amount of sand and gravel mixed, water is added, the mixture is stirred and kneaded, and the mixture is poured into a molding machine and solidified to manufacture a concrete block. The mixing ratio of cement, water, sand, and glass powder particles is such that the JIS standard can be achieved. Further, in the present invention, fine glass cullet having a particle size of 1 to 3 mm and 16 to 6 mesh may be used instead of sand.

Further, the maximum mixing amount of the mixing ratio of the glass powder particles with respect to cement, water and sand is the result of the test.
It has been found that the proportions shown in Table 2 below are optimal.

[0015]

[Table 2]

In the second embodiment of the invention, the surface of the block obtained by molding and solidifying the concrete block described in the first aspect is ground to give a smooth surface and luster. First, polish with a 300 or 500 whetstone, then 1000,
Polishing is performed in about 4 to 5 steps using No. 1500 and No. 2000 grindstones.

In the embodiment of the invention as set forth in claim 3, in the manufacturing process of the glass cullet, as the first step, the glass of the waste is classified by color and the frictional impact between the rotary blade and the fixed blade in the crusher is used. Remove the corners of the crushed surface of the glass cullet. As a second step, the glass cullet dropped in the first step is sucked into a cyclone dust collecting apparatus having a tube cylinder formed with a plurality of curved portions by a bag filter, and a rotating flow in the tube cylinder of the cyclone dust collecting apparatus. There is a method for producing glass powder particles in which the dust-containing gas is subjected to a centrifugal force to promote friction between the glass cullet and the glass cullet passing through the inside of the tube to completely remove the corners of the glass cullet.

[0018]

Since the present invention is configured as described above, it has the following effects.

Conventionally, a large amount of gravel was used in the production of concrete blocks, but by using safe waste glass cullet, which is a substitute, it is possible to recycle resources and provide a concrete block that is of low cost to the national interest. There is an effect.

Since the corners of the powder frame surface of the glass cullet are completely removed, it is safe in use.

Since the surface of the molded and solidified concrete block containing glass is polished smoothly, it not only shows the gloss of the glass remarkably, but also without any danger. The width can be determined, and it contributes greatly to safe operation, which makes it highly useful.

Since the waste glass is effectively used, the color of the waste glass allows free color coding depending on the place of use, and has an effect of giving a beautiful appearance.

The size of the glass powder particles themselves is not uniform, but since they are uniformly mixed in the concrete block, the exposure ratio of the glass powder particles on the block surface is uniform and the reflection characteristics can be further improved. In addition to clarifying the vehicle width, it has the effect of facilitating the discovery of human figures.

Recently, in particular, the time has come to seek symbiosis with the natural environment, and rather than simply vaguely laying concrete blocks, there is a strong desire for high-value-added concrete blocks that match the natural environment. It has the best effect in coexisting with the natural landscape due to the effect of reflection on and the size of the glass powder particles and increasing the kindness of the minds of those who pass by.

[Procedure amendment]

[Submission date] June 8, 1996

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0014

[Correction method] Change

[Correction contents]

In addition, as a result of the test, it was found that the optimum mixing ratio of the glass powder particles to the cement, water and sand was as shown in Table 2 below.

Claims (3)

[Claims] 1. In the production of concrete products, instead of gravel, sand and crushed glass are mixed with glass powder particles or glass beads in a non-hazardous shape, and molded and solidified to mix glass powder particles. For manufacturing concrete products. 2. The method for producing concrete containing glass powder particles according to claim 1, wherein sand and glass powder particles are mixed in place of gravel in the production of the concrete product, and the mixture is molded, solidified and polished. 3. A glass cullet obtained by crushing glass with a crusher into coarse and fine particles is used to remove the corners of the crushed surface of the cullet by frictional impact between a fixed blade and a rotating blade, and the resulting glass cullet is subjected to cyclone dust collection with a bag filter. 2. The corners of the glass powder are completely removed by the frictional action between the cullets due to the rotating flow while being sucked by the device and passing through the tube.
A method for producing a concrete product containing the glass powder particles as described.