JPS6038245B2 - Method for manufacturing water-permeable resin concrete molded body - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing a water-permeable resin concrete molded body.

BACKGROUND ART Conventionally, resin cosocrete molded bodies for wooden boards in which water collection pipes, shelf boards for seawalls, etc. are molded to have water-fast properties are known.

For example, in Tokukan Sho 50-31607, it is stated that the coarse bone village is integrally molded into a predetermined shape using resin concrete aggregated with resin, and the gravel that is the coarse bone village is made of a thin film of added resin surrounding the surface. It is described that they are assembled by adhesion with each other with a gap between them. However, in this molded body, the bone villages are bonded and exposed on the surface at the contact points of the aggregates, so when external forces, especially frictional forces, are applied, the resin bonding between the aggregates There is a disadvantage that the adhesive force between the aggregates weakens due to hydrolysis etc. due to contact with water, and the aggregates gradually separate from the surface of the molded product. It had the disadvantage that it could not be used for paving stones, etc. The present invention has been made to solve the above-mentioned drawbacks and to obtain a water-permeable resin concrete molded body having a surface layer with excellent durability against friction. A mixture A consisting of a bone village and an amount of curable liquid resin that is more than enough to fill the gap between the aggregates is poured into a mold provided with a bone village in an amount that does not embed the protrusions or ridges, and from above, a bone village is poured into the mold. and a curable liquid resin in an amount that binds the aggregates together but does not fill the voids between the aggregates. Exists. However, in the present invention, inorganic or organic solid or hollow granules are used as the aggregate. Aggregates with a particle size of about 0.2 mm are used by mixing arbitrarily, but the aggregate in mixture A is preferably one with a particle size of 2 mm or less, and the aggregate in mixture B is preferably one with a particle size of 2 mm or less. It is preferable that particles having a particle size between 0.2 and 8.0 mm are mixed.

It is not preferable to use aggregates with a particle size smaller than 0.2 willow in mixture B because it becomes difficult to form gaps between the aggregates. Further, the curable liquid resin is a thermosetting resin such as an unsaturated polyester resin, an epoxy resin, or a pinyester resin, and a curing agent, a curing accelerator, a catalyst, etc. are mixed therein as necessary. Further, powder fillers, reinforcing agents, pigments, etc. may be mixed with this resin. In particular, it is preferable to mix a powdery filler such as calcium carbonate because the viscosity of the resin can be adjusted and the amount of resin can be reduced. The amount of this curable liquid resin is
In the mixture A, the amount is more than enough to fill the gaps between the aggregates, and for example, the amount of the aggregate is 0.2 to 2. When using a material whose particle size is distributed in the range of the bow, it is best to use a resin containing 5% by weight of the characteristic powder filler, and the amount is preferably about 30 to 35% by weight, and in mixture B, the aggregate The amount that binds comrades but does not fill the voids between aggregates, for example, 0.2 to 8. When using particles whose particle diameters are distributed within a range of relative speed, it is preferable that the amount of the resin containing the particle size filler 5 is about 10 to 15% by weight. In the present invention, using a mold having a large number of protrusions or ridges on the bottom, first pour mixture A into the mold in an amount that does not embed the protrusions or ridges on the bottom. ,
Mixture B is supplied from above and cured, and a surface layer is formed by mixture A, and a molded article is produced in which water permeability is maintained at the protrusions or ridges. Next, an example of the present invention will be explained with reference to the drawings.

FIG. 1 is a sectional view showing one embodiment of the present invention.

Reference numeral 1 denotes a molding mold, which consists of a bottom plate 2 and a side wall 3 surrounding the periphery of the bottom plate 2, and the bottom surface 21 of the bottom plate 2 has a number of protrusions 22,
22... are provided.

The width of this protrusion 22 is preferably about 3 to 15 sides, and the height is about 3 to 1 ship. In addition, each of the protrusions 22, 22, . It may be connected to the protrusion. As an example of the arrangement of the protrusions 22, the arrangement shown in FIGS. 2 and 3 can be considered, or the arrangement in which a large number of protrusions 22' are arranged as shown in FIG. 4 is also possible. And this mold 1
First, pour mixture A into the container. At this time, the mixture A is set to such an extent that the protrusions 22 are not embedded, and the mixture B is added thereon, and the curable liquid resin is cured in this state.
When supplying mixture B, the curable liquid resin in mixture A may be in an uncured state or in a somewhat cured state.In the case of uncured, mixture B may be supplied. As a result, the resin forms the protrusions 22, 22... of the molding die 1.
Do not bury the top surface of... In addition, after supplying the mixture B, it is preferable to apply pressure from above or apply vibration to increase the filling degree of the mixture B.

Further, heating may be applied during curing. When the molded body thus formed is taken out from the mold 1, as shown in FIG. A water-impermeable surface layer 5 is formed in this surface layer 5, and patterned grooves 6 corresponding to the protrusions 22' of the mold 1 are formed in this surface layer 5. Become. Since this groove 6 communicates with the molded body substrate 4 having water permeability, the molded body as a whole maintains its water permeability through this groove 6. In addition, in the present invention, if an aggregate containing a mixture of large particle size and small particle size aggregate is used as aggregate contained in mixture B, mixture B will contain particles between the large particle size aggregates. As aggregates with smaller diameters enter, the degree of aggregate filling increases, and the water passages formed between the bones are blocked by the hardening liquid resin, making the molded product resistant to external forces such as impact forces and bending. However, it tends to have poor water permeability.

In this case, in order to improve water permeability, a through hole or a pongee gap passing through the bottom plate 11 is bored in the protrusion 22' or ridge 22 provided on the bottom surface 21 of the mold 1. When mixture A and mixture 8 are put into mold 1 and cured, air is made to flow from one side of mold 1 to the other through the holes or gaps between the aggregates of mixture B. What is necessary is to harden it with a gap formed. To allow air to flow, one side of the mold 1 may be depressurized and air may be sucked, or pressurized air may be sent, or both may be used in combination. Further, the air may be allowed to flow continuously for the entire curing time, or may be allowed to flow until the resin hardens and the gap is no longer blocked, and then the air may be stopped. The method for manufacturing the water-permeable resin concrete molded body of the present invention is as described above, using a mold with a large number of protrusions or ridges on the bottom, and adding aggregate and , the mixture A with a curable liquid resin of a heavy weight or higher that fills the gaps between the aggregates is applied to the protrusions.
Pour the amount that will not bury the protrusion, and from above, add the bone village,
By supplying and curing the mixture B with a curable liquid resin in an amount that binds the aggregates together but does not fill the voids between the aggregates, the surface of the molded body having water permeability formed by the mixture B. A water-impermeable surface layer can be formed that is firmly adhered to the mold, and a molded product that maintains water permeability through the portions corresponding to the protrusions or ridges of the mold can be obtained.

Therefore, it is possible to produce a molded body that does not cause the bones to separate even if its surface is subjected to frictional force due to walking or the like, without impairing the properties of the water-permeable resin concrete of the supporting structure.

In addition, by selecting the arrangement of the protrusions or protrusions provided on the bottom of the mold, it is possible to form a patterned surface layer on the surface of the molded product, making it possible to create various patterns used for pavement boards, paving stones, etc. A molded article having a beautiful surface layer can be easily molded.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an example of an embodiment of the present invention, FIGS. 2 to 4 are plan views showing examples of molds used in the present invention, and FIG. 5 is a molding obtained by the present invention. It is a sectional view showing an example of a body. 1: Molding mold, 2: Bottom plate, 21: Bottom surface, 22: Projection, 2
2': protrusion, 3: side wall, 4: molded body substrate, 5: surface layer,
6: Groove, A: Mixture A, B: Mixture B. 2 years old, 2 years old, 3 years old, 44 years old, 5 years old

Claims (1)

[Scope of Claims] 1. A mixture A of aggregates and a curable liquid resin in an amount equal to or more than the amount that fills the gaps between the aggregates is placed in a mold having a large number of protrusions or ridges on the bottom surface of the mold. Alternatively, pour in an amount that does not cause the protrusions to be buried, and then supply and cure the mixture B of aggregate and a curable liquid resin in an amount that binds the aggregates together but does not fill the gaps between the aggregates. A method for producing a water-permeable resin concrete molded body, characterized by: 2 The aggregate in Mixture A is a granular material with a particle size of 2 mm or less, and the aggregate in Mixture B has a particle size of 0.2 to 8 mm.
The manufacturing method according to claim 1, wherein the granules in between are mixed. 3. The manufacturing method according to claim 1 or 2, wherein the curable liquid resin in mixture A and mixture B is a thermosetting resin mixed with a fine powder filler. 4. A projection or ridge provided on the bottom surface of the mold is provided with a hole or a slit that penetrates the bottom, and when the mixture B is cured in the mold, the mixture is passed through the hole or slit. The manufacturing method according to any one of claims 1 to 3, wherein the aggregates are hardened with air flowing through them to form gaps between the aggregates.