JPH0452303A - Non-skid architectural and consturctional materials utilizing grained waste - Google Patents

Abstract

PURPOSE:To utilize waste for non-skid architectural and constructional materials by solidifying comparatively hard waste, having a grain diameter of blast furnace slag, molding sand, and sludge, etc., with thermosetting resin to form protruded and irregularly roughened surface on the surface. CONSTITUTION:About 70-90wt.% of comparatively hard grained waste 1 such as molding sand, blast furnace slug, an sludge, etc., having a grain size of a mean diameter of about 0.089-0.715mm, and about 10-30wt.% of thermosetting resin 2 are mixed. Moreover the mixture is heated and solidified, and its surface is formed as an irregularly roughened surface to make material having fixed hardness. When the material is utilized as floor material and paving stones, can improve an antislipping effect with strong friction force displayed with the roughened surface even they get wet with rain, etc., and also economize word because of the inexpensive delivery of the material.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention targets wastes of granular and relatively hard materials such as blast furnace slag, foundry sand, and sludge, which are solidified with a thermosetting resin. , flooring materials designed to exhibit an anti-slip effect,
Used for building materials such as paving stones and civil engineering materials.

[Prior art] Currently, in the casting process of castings, sand that forms the mold,
A large amount of slag is discharged, which protects the hot water from oxidation.

Furthermore, in the process of melting and refining iron ore in a blast furnace, a large amount of granular material called slag containing silica, alumina, etc. is discharged at the same time as washed iron is produced. Furthermore, the sludge generated during sewage treatment is dehydrated and turned into a cake, then dried and incinerated, after which silica, calcium, etc. become granular.

Conventionally, these materials are either composted and then disposed of in a landfill, or mixed into concrete to form concrete blocks.

[Problem to be Solved by the Invention] 11 As a result of repeated research on the treatment of these wastes, the present inventor has realized that there is no technology that takes advantage of the fact that these wastes have a certain particle size and hardness. By focusing on this characteristic, the present invention was developed in an attempt to utilize it for flooring materials, paving stones, stair stones, etc. that exhibit an anti-slip effect.

[Means for solving the problem] The present invention focuses on waste having a certain particle size and hardness. Examples of the waste include foundry sand, blast furnace slag, and sludge.

First, foundry sand is mainly composed of sand used as a mold material to form a mold, and silicic acid, lime, and metals that form a surface layer to protect the hot water from oxidation. It also has a certain particle size and hardness.

Blast furnace slag is discharged during the process of manufacturing washed iron, steel, etc. by melting iron ore in a blast furnace, and its components are as shown in the table below.

The slag composition table shows that although these components are dispersed, they are granular and contain relatively hard silica and alumina.

Furthermore, sludge refers to sludge components discharged from factory wastewater treatment and sewage treatment plants, etc., and the main components of the ignition residue are silica (Si), calcium (Ca), aluminum (Al), and iron. (Fe).

As a result of researching these graininess and hardness,
The researchers focused on the fact that if these granules are solidified and exposed on the bare surface, a rough surface with irregularities is formed, which exhibits an anti-slip effect.

That is, among these, those having a mesh number of 28 to 200 and an average particle size of 0.089 to 0.715 mm are selected as the main components, and this is solidified with a thermosetting resin so that its plain surface is exposed.

As the thermosetting resin, for example, a novolac type phenolic resin can be used.
10 to 30 wt % of phenol resin is mixed with respect to t % and mixed with a stirrer. At this time, since the novolac type phenol is in powder form, there is no need for kneading and it can be easily stirred. Then, this mixture of resin and waste is put into a mold for molding and heated.The heat softens the resin and causes it to stick to the waste and bond them together.Next, it is pressurized. If heating is continued further, the resins cause a curing reaction with each other, forming a three-dimensional network structure and curing. As a result,
The waste materials are strongly connected and fixed by the thermosetting resin. At this time, since the resin is 10 to 30 wt % with respect to 70 to 90 wt % of the waste, the resin does not cover the entire particulate waste, and the skin surface can be exposed and the bare face can be exposed. This bare surface has an average diameter of 0
゜089~0.715mm (200~2B mesh)
Because it has a grain size of 1,000 yen, it forms a rough surface with irregularities, and by the action described below, it functions as an excellent board material, block flooring material, paving stone, etc.

[Function] The granular waste solidified by the resin has a particle size with an average diameter of 0.089 to 0.715 mm, so when exposed to the surface, the tips of the particles protrude and form an uneven rough surface. In addition, because it has a certain hardness, even if it gets wet from rain, etc. when used as a floor material or paving stone, its rough surface exerts a strong frictional force and works to prevent slipping.

At this time, the granular waste is hardened by the network-structured thermosetting resin, so it is strongly fixed, and even when climbing with shoes, etc., it can withstand the pressure and impact force, and the frictional force is also improved.

Further, if the thermosetting resin is a novolac type, mixing and stirring is easy, manufacturing is extremely simple, and mass production is possible.

[Effects] With the above configuration, the present invention utilizes the characteristics of wastes such as slag and iron powder to exhibit excellent functions as anti-slip flooring materials, building materials such as paving stones, and civil engineering materials. , it can also have an economical effect that it can be provided at low cost.

In addition, since these wastes that have been difficult to dispose of can be used effectively, it can be a more advantageous treatment method that does not generate secondary costs compared to composting or landfill treatment.

[Example Particle size 100 mesh, average diameter 0.179 (nominal size 1
5 kg of foundry sand of 49 μ) and 3 kg of blast furnace slag of the same grain size.
and 1.5 kg of novolac type phenol resin were stirred for 5 minutes using a mixer. Then, a mold is prepared in which the surface of the upper mold is formed into a rough surface with irregularities, and the mixture of waste and resin is put into this, firstly, it is given slight vibration with a vibrator to tightly pack and pressurize. Then, the mold was heated with a heating wire to raise the temperature to about 180°C. Initially, the resin was softened and adhesively bound the waste, then heating was continued to harden the resin, which was then allowed to cool. By demolding, an anti-slip floorboard with a rough, uneven surface was obtained.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1(A) is a longitudinal sectional side view of a flooring material illustrating the present invention, and FIG. 1(B) is a partially enlarged longitudinal sectional view. Granular waste thermosetting resin

Claims (1)

[Claims] particle size with an average diameter of 0.089 to 0.715 mm, and
70 to 90 wt% waste consisting of relatively hard materials such as foundry sand, blast furnace slag, sludge, etc. and 10 to 30 wt% of thermosetting resin
An anti-slip construction material and civil engineering material characterized by forming an uneven rough surface with protruding grains on the surface by mixing the mixture with t% and heating and solidifying the mixture.