JPS6395909A - Manufacture of resin concrete - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a method for producing resin concrete that is easy to mix.

(b), Prior Art Conventionally, when producing resin concrete, liquid resin, cement, water, and aggregate were kneaded.

(C) 9 Problems to be Solved by the Invention However, this method has the disadvantage that liquid resin adheres to the mixer during crosstalk, making handling extremely difficult, and the reality is that it is hardly put to practical use. be.

SUMMARY OF THE INVENTION In order to eliminate the above-mentioned drawbacks, the present invention aims to provide a method for producing resin concrete that can be easily kneaded and handled easily.

(d) Means for Solving Problem 0 That is, the present invention provides at least a method in which, when cement, resin, and water are kneaded, the resin is made into solid particles, and the water is maintained in a substantially solid state. The cement, resin, and water mixture that has been kneaded is then extruded and molded.

(e) 0 effect With the above-described configuration, the resin maintains a solid particle state during kneading, and the water also maintains a solid state. This acts so that each material to be kneaded remains in a solid state.

(f), Example Examples of the present invention will be specifically described below.

When manufacturing resin concrete, first cement,
The aggregate, water and resin are put into a mixer and kneaded. At this time, the water and resin are each solidified at a low temperature and then formed into particles before use.

In other words, water is frozen at below freezing point and then crushed into particles, or ice that is frozen into particles is used, and resin is also solidified below its freezing point and processed into powder. (
Note that resins include those that are solid at room temperature). The resin used at this time may be either a two-type mixed curable resin consisting of a base resin and a curing agent, or a one-type thermosetting resin.

Naturally, it is also possible to add a curing agent of a two-type mixed curable resin to water in a liquid state, and freeze the water to which the curing agent has been added to form solid particles. That is, during the kneading process (B), the water and resin behave as dry particles because they maintain a solid state, and the kneading process is carried out smoothly without the resin adhering to the mixer. This is done in such a way that the particles are uniformly mixed with cement. Note that during kneading, the surrounding atmosphere is maintained at a temperature below the freezing point of the water and resin to be kneaded. In addition, cement, aggregate, water,
The order and manner in which the resins are added are arbitrary; for example, it is also possible to mix cement and resin in advance and then knead the mixture with water and aggregate.

When the cross-mixing of cement, aggregate, water, and resin in the particle state is completed in this way, the mixture with completed cross-mixing is applied to an extrusion molding machine and extruded into a predetermined shape. Then, the mixture is heated by compression molding heat generated during molding, and the water and resin are released from their solid particle state and dissolved by the heat, and the water hydrates with surrounding cement particles and starts solidifying. Further, the melted resin penetrates between the cement particles that have started to solidify and solidify into a single piece, and a molded article formed into a predetermined shape is molded with resin concrete.

During kneading, the water and resin are mixed uniformly with the cement in a substantially dry state, so the dissolved water and resin act on the cement in an overall uniform state, and after solidification, This resin concrete also exhibits uniform properties. In addition, since water is uniformly mixed with the cement particles, the hydration reaction between water and cement is also uniform and good overall, and therefore the water-cement ratio is calculated based on the theoretical hydration of cement. It can be done in a way that approximates the amount as much as possible.

In addition, when kneading, iron powder, iron powder,
It is also possible to add radiation shielding ability to the resin concrete after solidification by mixing lead powder, etc. Furthermore, it is also possible to mix carbon fibers, aramid fibers, etc. as necessary.

Further, in the above embodiment, water is mixed into cement in the form of particulate ice, but water may be mixed in any manner as long as it remains substantially solid during kneading. For example, water (or water to which a hardening agent is added for a two-component hardening resin consisting of a main ingredient such as a polymer and a hardening agent) encapsulated in microcapsules may be injected at the time of crosstalk. Furthermore, the water and the curing agent may be separately microencapsulated and used. In this case, the kneading atmosphere does not necessarily have to be at a temperature below the freezing point of water, as long as the temperature does not dissolve the resin. It should be noted that if microcapsules are used that have the property of being destroyed by pressure, the extrusion process will be easier because the capsules will be destroyed by the extrusion pressure.

In addition, as a heating method, in addition to heating using processing heat during extrusion, it is of course possible to forcibly heat using an appropriate heating means, and the timing is not limited to extrusion processing, but also during kneading. It goes without saying that natural heating or forced heating may be carried out, particularly from the latter half of the kneading process.

Examples of blending resin concrete (parts by weight) are shown below.

Cement: 100 parts Water (ice): 15-30 parts Polymer (resin): 10-30 parts (variable arbitrarily) Hardening agent: Appropriate amount (add by freezing the aqueous solution with the above water) Sand: 20-5
0 parts (g) 0 Effects of the invention As explained above, according to the present invention, at least when kneading cement, resin, and water (therefore, kneading with aggregate added is optional), The resin is in the form of solid particles, water is added and kneaded in a form that maintains a substantially solid state, and the mixed mixture of cement, resin, and water is extruded and molded. During kneading, the resin maintains a coagulated state, that is, a dry particle state, so that the resin does not adhere to the mixer or the like, and handling during feeding is extremely easy.

Furthermore, since water is added in a solid state during kneading, it is possible to mix it evenly with the cement, making it possible to lower the water-cement ratio and obtain high-strength concrete.

The following uses can be considered for the resin concrete thus obtained.

(1), Buildings: floors, walls, roofs, exterior walls, fences, corrugated plates, etc. (2), Pipes: pressure vibrators, sewage pipes, water supply and drainage pipes, optical fiber pipes, storage pipes, etc. (3), Electronic components: insulation materials, sockets, switchgear, etc. (4), various equipment: acoustic panels, cabinets, etc. (5)
, Special: Radioactive shielding plates, non-magnetic structural materials, etc. Applicant
Mitsui Construction Co., Ltd. Agent Patent Attorney Phase 1) Shinji (and 1 other person) November 27, 1988 1 Indication of the case 1985 Patent Application No. 242841 2 Name of the invention Process for manufacturing resin concrete 3 Person making the amendment Relationship to the case Patent applicant address 3-10-1 Iwamoto-cho, Chiyoda-ku, Tokyo Name Mitsui Construction Co., Ltd. Representative Ryoji Machida 4 Agent (1) 0 Page 4 of the specification, numbers from the bottom] "In a low temperature state" written in the 7th line to the 16th line from the bottom is corrected to "by cooling."

(2), page 4, line 13 from the bottom, between "freezing point" and "below", there is a statement that says "(here, freezing point is
This refers to the temperature (not necessarily a constant temperature) at which the resin substantially loses its fluidity and becomes solidified. Same below. )”
Insert the text.

(3), page 5, line 2 of the same, the "freezing point of" is corrected to "the temperature at which fluidity is restored."

(4), page 8, line 7 from the bottom, "solidified state" is corrected to "solid state."

that's all

Claims (4)

[Claims] (1) At least when kneading cement, resin, and water, the resin is added in the form of solid particles and the water is added in a form that maintains a substantially solid state, and the kneading is completed. A method for producing resin concrete made by extruding a mixture of , resin, and water. (2) The method for producing resin concrete according to claim 1, wherein the resin is a two-component hardening resin consisting of a base resin and a hardening agent. (3) A method for producing resin concrete according to claim 2, which comprises adding and kneading an aqueous solution of a hardening agent of two types of mixed hardening resin and water while maintaining a substantially solid state. . (4) A method for producing resin concrete according to claim 2, wherein a curing agent of a two-part mixed curable resin and water are introduced and kneaded in a form that maintains a substantially solid state, respectively.