JPH0353404B2 - - Google Patents

Description

[Detailed description of the invention]

Industrial Application Fields The present invention is applicable to roads, sidewalks, cycling courses,
Relates to paving bodies for paving paths in parks, etc. Technical background Conventionally, the surface of a pavement made of concrete or asphalt concrete was coated with a synthetic resin such as epoxy resin, urethane resin, or acrylic resin colored with any pigment to a thickness of about 2 to 3 mm. Paving is used. In this case, the synthetic resin generally includes calcium carbonate, alumina, talc, clay, diatomaceous earth, silica sand, barium sulfate, mica, antimony trioxide,
Add glass powder, etc. to 30~30% of the amount of resin depending on the application.
By mixing about 210%, it is possible to increase the strength of the synthetic resin, improve its corrosion resistance, improve its electrical properties, and reduce its cost. As a result of focusing on the components contained in sludge-like cakes as various industrial wastes discharged from various factories and considering their reuse, the present inventors found that:
This sludge-like cake is baked into cement,
By mixing and blending with hydraulic hardening substances such as gypsum, we developed a soil reinforcement improvement material (patent application 1986-
No. 60442). The inventor of the present invention further investigated the reuse of the above-mentioned industrial waste and household waste, and as a result, it was discovered that certain types of waste were made of room-temperature curing synthetic resin for coating and adhering to the above-mentioned pavement aggregate. The present invention was made based on the knowledge that the present invention can be effectively used as a filler in place of the above-mentioned substances, and in particular can increase the strength of pavement. Structure of the Invention The present invention is directed to a cold-curable unsaturated polyester resin containing as a filler one or more powders of industrial waste and domestic waste discharged from sugar factories, steel factories, and sewage treatment plants. It is a pavement made of a mixture of luminous paint and pigments, and it is also a plastic pavement made by sprinkling light-reflecting glass beads on these compositions. The present invention will be explained in detail below. The room temperature curable unsaturated polyester (hereinafter simply referred to as synthetic resin) used in the present invention is a polycondensate containing maleic anhydride, terephthalic acid, ethylene glycol, etc. as constituent components. Further, as the waste added as a filler for the synthetic resin, the following are used. A dried cake made by filtering agglomerated precipitates containing calcium carbonate as the main component, which is produced during the refining process of raw sugar at sugar factories. The water content of the filter cake is 40-60% by weight, and it is desirable to dry it at high temperatures. Iron ore slag and converter slag produced in steel factories. Ash obtained by burning sludge produced at sewage treatment plants. This ash content is a sludge cake (water content: 40 to 60%
%) fired at 800-1200℃. An example of analysis of chemical components in these wastes is shown in Table 1 below. The chemical composition of the ash content was extracted from the 16th Road Conference proceedings.

[Table] Incidentally, the current situation is that these wastes are used in landfills or dumped at sea. In the present invention,
These wastes are selected and used effectively as fillers for plastic pavement, but when using them, they must either be free of heavy metals or contain heavy metals based on Environment Agency Notification No. 13. Even in such cases, care must be taken to use materials that meet the emission regulation values. The waste is pulverized into about 300 to 350 meshes, and one or more of them are mixed in the form of dry powder and added to the synthetic resin as a filler. The amount added is approximately 30 to 210% by weight based on the synthetic resin, but 100 to 115% by weight is appropriate. The pavement according to the present invention is produced by filling a synthetic resin optionally colored with a luminous paint or the pigment described above with the above-mentioned waste, and adding 6 to 12 wt of the synthetic resin to crushed stone, sand, etc. and aggregates of these materials. % blended resin composition and laid on the road. When laying the pavement, the mixture is kneaded for 1 to 3 minutes using a concrete mixer or mortar mixer, the mixture is transported to the site, and the paving can be directly formed by rolling it with a laying roller. Furthermore, light-reflecting glass beads are dispersed on the surface of the pavement and then pressed using a rolling device such as a rammer or roller to solidify the pavement and finish it as a pavement. In this case, the amount of glass beads to be sprayed varies depending on the particle size, but for glass beads with a grain size of 420 to 590μ, the amount to be spread is preferably about 0.5 Kg/m ² .
In the pavement formed as described above, the glass beads adhere well to the synthetic resin and have good adhesion, and bend and reflect light from electric lights and moonlight in the dark. Helps eliminate walking hazards inside. As shown in Table 1, the waste used in the present invention contains 30% or more of calcium (as CaO) and significantly increases the unconfined compressive strength of the formed pavement. Furthermore, since it is similar to the filler added to conventional synthetic resins used in plastic-coated pavement, it can be effectively used as a substitute for the above-mentioned fillers, and it also improves the viscosity and strength of the synthetic resin. Does not cause any hindrance. Therefore, industrial waste and household waste, which have conventionally caused problems in terms of disposal, can be used as a filler for the synthetic resin used in plastic-coated pavement to provide a pavement. It is useful for the effective use of household waste. Moreover, the pavement according to the present invention uses the powder of the waste or its processed material as a filler,
Due to its high calcium content, the unconfined compressive strength can be significantly increased. EXAMPLES The present invention will be explained in more detail with reference to Examples below. Example 1 Unsaturated polyester (manufactured by Showa Kobunshi Co., Ltd.: trade name Rigoratsuku 3035; B agent 100: A agent 50 wt%) from 45 to
Mixed with a soil mixer with low and high speed two-stage switching at 90 rpm, and mixed with this as a filler, 114 wt% of the resin amount and 8 wt% of the pigment, dried powder of sugar sludge, and mixed with a resin curing agent (Lucidor Yoshitomi).
Co., Ltd. (trade name: Lupasol DSW), methyl ethyl ketone peroxide is added at 0.5% to the resin amount.
~2wt%, a resin composition containing 0.1 to 1wt% of cobalt naphconate as an accelerator based on the resin amount, crushed stone No. 6 85wt%, crushed stone No. 7 13wt%, and silica sand No. 6
Add 9.2wt% to the material consisting of 2wt% and mix.
The mixture was placed in a steel form, compacted and compacted to obtain a water-permeable plastic-coated pavement that hardens at room temperature. A water permeability test and a hardness test (unconfined compressive strength; measured after 24 hours at a room temperature of 20°C. The same applies to Examples 2 and 3 described below) of the obtained pavement specimens. The results are shown in Table 2.

[Table] According to the above tests, conventional asphalt concrete pavement has a hydraulic conductivity of 10 ^-2 and an unconfined compressive strength of
25Kg/cm ² , and the unconfined compressive strength when immersed in water at 60°C for 24 hours is 4Kg/cm ² .Compared to this, the pavement of the present invention has far superior water permeability and unconfined compressive strength. It can be seen that In addition, asphalt concrete has poor heat resistance and softens during high temperatures in the summer, causing clogging due to the adhesion of dirt and dust, which impairs its function when cleaning or maintaining the pavement. The plastic pavement according to the invention eliminates the above-mentioned disadvantages. Example 2 A dense particle size blending test was conducted on a cold-curing pavement made of unsaturated polyester. Its composition is shown in Table 3 below. Table 3 Dense particle size plastic pavement crushed stone No. 6 1302g 42% Crushed stone No. 7 527g 17% Coarse sand 868g 28% Fine sand 403g 13% 100% Sugar sludge 100g Iron ore slag powder 80g Unsaturated polyester Ligorac B 182g Unsaturated Polyester Ligo Rack A 90g Pigment (madder) 40g Curing agent 27g Accelerator 13g The unconfined compressive strength of the dense-grained plastic pavement was 512.5Kg/cm ² and the bending strength was 119.4Kg/cm ² . Example 3 A plastic mortar formulation test was conducted on a cold-curing pavement made of unsaturated polyester.
Its composition is shown in Table 4 below. Table 4 Plastic mortar coarse sand 300g Fine sand 600g Sludge powder 100g Sugar sludge 68wt% Rubber, plastic residue 20wt% Iron oxide 12wt% Unsaturated polyester rigorak B 120g Unsaturated polyester rigorak A 60g Accelerator 9g Hardening agent 18g Pigment ( Red) 9g The unconfined compressive strength of the above plastic mortar is
The bending strength was 309.4Kg/cm ² and 93Kg/cm ² . In Examples 1 to 3, when light-reflecting glass beads are used, they are dispersed while the synthetic resin is still viscous before solidification and are quickly rolled to adhere to the synthetic resin.

Claims (1)

[Claims] 1. A dried filter cake of coagulated precipitates mainly composed of calcium carbonate produced in the raw sugar refining process in sugar factories, iron ore slag and converter slag produced in steel mills, and sludge produced in sewage treatment plants. The paved surface is coated with a mixture of a room-temperature-curing unsaturated polyester resin containing one or more powders selected from the ash content as a filler and a luminous paint or pigment, or at least the above-mentioned 3. A pavement body made by scattering light-reflecting glass beads on a room-temperature curable unsaturated polyester resin composition.