JPS5899159A - Heat-resistant concrete and manufacture - Google Patents

Abstract

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

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a heat-resistant material comprising a hardened mixture containing blast furnace slag, one or more of cement, gypsum, and a binder, or a heat-resistant aggregate. 1. A method for producing heat-resistant concrete, which is characterized in that the above mixture is first hardened, then heated and rapidly cooled, and then heated with water and heated for 1 hour. Regarding. Blast furnace slag in this invention refers to water slag and slow cooling slag collectively, and binder refers to water glass or its water, is liquid, cellulose thickener aqueous solution, glue aqueous solution, hydrocarbon glue agent. (9) Aqueous solutions thereof, seaweed-based adhesives (9) Water bath liquids, synthetic resin emulsions, synthetic rubber emulsions, or mixtures of these, other than hydraulic inorganic systems, which have the property of fixing substances. Thing t11
to be called. In addition, heat-resistant aggregates refer to heat-resistant aggregates such as igneous rocks such as andesite and Bunmusha, whitebait, rock, slag, chamotte 1 heated and expanded artificial aggregates, pumice, perlite, and pottery waste. Collectively, the heat-resistant aggregates referred to in the following examples are 1
The heat-resistant appetizer material mentioned above may be used as it is, crushed, crushed, or mixed with a plurality of types of cloves.

Example 1 50 parts by weight of Portland cement, 150 parts by weight of water slag,
100 parts by weight of heat-resistant aggregate and 1 part of water are mixed, molded using a 9-mixture mold 1, and hardened to form heat-resistant concrete IJ.
-)t47'j.

Example 2 A mixture of 100 parts by weight of blast furnace tops), 100 parts by weight of water slag, 100 parts by weight of heat-resistant aggregate, and an appropriate amount of water was molded using a warning sound and hardened to obtain heat-resistant concrete. Ta.

Example 3 50 parts by weight of gypsum, 150 parts by weight of water slag, 100 parts by weight of heat-resistant aggregate
Part by weight and an appropriate amount of water and sonic mixture are mixed and molded using rat, and hardened to obtain heat-resistant concrete.9.

Example 4 A mixture of 100 parts by weight of water slag, 100 parts by weight of heat-resistant aggregate, and an appropriate amount of binder is molded and hardened to form heat-resistant concrete tmh.

Example 5 Heat-resistant concrete Q10 primarily cured in Examples 1 to 4
00°C to 1200'CK71] Quickly cool the heat L'C, and then perform secondary curing by humidifying and heating or heating with water.
Heat-resistant concrete [obtained.

In Examples 1 to 4 above, one or more of cement (including boltland cement and blast furnace cement), gypsum, and binder was used instead of portland cement, blast furnace cement, gypsum, and binder. When blast furnace cement is used for cement, slow-cooled slag may be used instead of water slag. At this time, slow-cooled slag is used as a heat-resistant aggregate. In this method, inorganic fibers such as steel fibers, alkali-resistant glass fibers, glass wool, and silicon nitride fibers are mixed, molded, and cured. It may also be cured.

Alternatively, the mixture may be foamed using a foaming agent, and the foamed mixture may be molded and cured. kofL
The heat-resistant concrete that can be formed and cured in this way is heated and rapidly cooled as in Example 5, and then the heat-resistant concrete is subjected to secondary curing by humidification heating or water heating. The manufacturing method for concrete is to form a mixture using cement, gypsum, and binder τ or two or more of them, and then to heat the molded product sonically and rapidly cool it. This method activates the blast furnace slag and performs secondary hardening by utilizing the hydration reaction of the activated blast furnace slag. Rapid cooling can be achieved by immersing the molded body in circulating cold water, etc. Heat curing can be carried out by impregnating the molded body in boiling water, etc.Example 6F'L7' prepared in Examples 1 to 5 is applied with an inorganic paint or a shaft load on the surface of heat-resistant concrete, After heating, the mixture was slowly cooled to obtain a heat-resistant concrete II-)f on which an inorganic paint or glaze was adhered.

Sumitomo Ceram was used as the inorganic paint in the above examples.

Example 7 The surface of the heat-resistant concrete that was primarily hardened in Examples 1 to 4 was glazed, heated to 1000°C to 1200°C, rapidly cooled, and heated with humidification or hydrothermal heating to form the heat-resistant concrete. After secondary curing, a synthetic resin thread paint was applied thereon to obtain a heat-resistant concrete with a glaze and a synthetic resin paint layer fixed thereon.

Example 8 A mixture containing blast furnace slag, one or more of cement, gypsum, and binder, or further heat-resistant aggregate t1 concrete, air bubbles = t 7 p-reet (using a foaming agent) General term for mortar-based aerated concrete that contains foam, nine-silica-based aerated concrete that uses aluminum foam, and silica-based aerated concrete that contains foam using a foaming agent), lightweight concrete (contains lightweight aggregate)
, lightweight cellular concrete (contains lightweight aggregate and cellular tubes)
Laminated with uncured concrete base materials such as , etc., heated and cured,
It was cured by steam curing, humidified heat curing, autoclave curing, or left curing, and a heat-resistant concrete layer 2b% was adhered to the surface of the cured base material 1. Heat-resistant concrete as shown in FIG. 1 was obtained.

Example 9 An inorganic paint t or m'i was applied to the surface of the heat-resistant concrete prepared in Example 8, and after heating, the inorganic paint or glaze was fixed on the surface and a surface finish layer 3 was formed. have @
Heat-resistant concrete as shown in Figure 2 was obtained.

Example 10 Blast furnace slag, one or more of cement, gypsum, and a binder, or a mixture containing heat-resistant aggregate, is mixed into concrete, aerated concrete, lightweight concrete, lightweight aerated concrete, etc. Laminated with similar uncured base materials, and applying an inorganic paint or glaze on the mixture, heat curing, humidification heat curing, or autoclave curing, the inorganic paint or glaze adheres to the surface and becomes heat resistant. Conch 13)i obtained.

Example 11 A mixture containing blast furnace slag, one or more of cement, gypsum, and binder, or a heat-resistant aggregate, is mixed into concrete, aerated concrete, lightweight concrete, lightweight aerated concrete, etc. Laminated with hardened base material, heat curing, steam curing, humidified heat curing,
The material was cured by autoclave curing or electric discharge curing to obtain heat-resistant concrete with a heat-resistant concrete layer fixed to the surface of the base material.

In the above embodiment, an adhesive layer is provided on the surface of the base material and the mixture is laminated thereon, or a part of the inorganic fiber or corrugated metal mesh is protruded from the surface of the base material and a heating layer is laminated. This allows for good adhesion of the mixture to the base material. In addition, according to the manufacturing method of Example 9 and IO, a heat-resistant concrete with an inorganic paint and a glaze fixed on the surface was prepared.
Obtainable.

As explained above regarding the implementation regulations, in this invention, casting molding, extrusion molding, press molding vibration molding, pipe range press molding, and roll 7-ohm molding are used to mold the mixture or the mixture and the uncured base material. be able to. Heat-resistant concrete made by hardening a mixture containing blast furnace slag, one or more of cement, gypsum, and a binder, or further heat-resistant aggregate, and the above-mentioned mixture adhered to the surface of the base material is hardened. The heat-resistant concrete layer has numerous ventilation holes*1! It is preferable that the K constituting the continuous holes be made of a loose warm mixture with little water [formed by the above molding method (dry molding method), or by reducing the amount of fine aggregate to create a large number of voids. This can be achieved by, for example, In addition, in the heat-resistant concrete layer t (having a heat-resistant concrete II-) with continuous holes, a larger amount of foaming surfactant than the foaming agent used to form the closed-cell structure is added. If the used foaming agent is used, the vents will be burned when the mixture is cured.Also, if the mixture is used, one of the thickener, water reducer and water repellent will be used.
One species or two or more species can be mixed together, and when mixed as a total thickener for water bath liquids such as product names Metrose and Hi Metrose (manufactured by Shin-Etsu Chemical Co., Ltd.), it imparts malleability and flexibility to the mixture. It also serves as a stabilizer when foaming the mixture or adding fibers to the mixture. Also, when mixing a water reducing agent such as the product name Mighty 150 (manufactured by Kao Soap Co., Ltd.), the mixing ratio of water can be reduced and the strength of the heat-resistant concrete layer or heat-resistant concrete can be increased. ~ - When mixing silicone-based water repellents such as Boron C (manufactured by Shin-Etsu Chemical Co., Ltd.), stearic acid or stearate-based water repellents, it is not only convenient for removing ffl, but also for heat-resistant concrete layers or When heat-resistant concrete Kl & water-based 1 or 01 or a mixture of two or more of these are mixed, fl, (7) 1% properties are exhibited, respectively. , and this invention V
cj? It goes without saying that the method used in one embodiment may be used or utilized in other embodiments if it is appropriate for the other embodiments.

This invention is constructed as described in detail, and utilizes the hydration reaction of blast furnace slag, and uses all heat-resistant aggregates for the aggregate used, so it has excellent fire resistance with less strength loss and cracking caused by heating. n1 If an inorganic paint or glaze is completely applied to the surface and can be fixed by heating, and a heat-resistant concrete layer is fixed to the surface of a concrete-like base material, the concrete-like base material has excellent heat resistance, and the surface Inorganic paints can be carefully applied and fixed by heating only the surface.

In addition, when the heat-resistant concrete layer is connected with holes and pipes, it is not only heat resistant but also has excellent heat insulation properties, and even if only the surface is heated and the PIA layer is thermally welded, it will not work on the concrete base material. Materials that conduct heat easily, have steep thermal damage to f'L', and use continuous heat-resistant aggregate, or have both, have excellent not only heat resistance but also insulation properties, and can cause thermal explosions. Not only can inorganic paints or glazes be applied to the surface and fixed by heating, but also synthetic 1111 emulsion, synthetic rubber emulsion resin - hydraulic inorganic type Slurry and one of the water repellents
A comparatively thick surface layer can be formed by impregnating a 9-type paint by combining 4s of colorants or a mixture of two or more types.1. Heat curing is also easy. As mentioned above, the heat-resistant concrete of this invention and the applied product of this invention, which is a heat-resistant concrete in which a heat-resistant concrete layer is formed on an uncured or hardened concrete substrate, are as follows:
It has a multi-layered effect, and can be applied by applying an inorganic paint (such as Sumitomo Ceram), glaze, or the above-mentioned water-based paint to the surface and then heating it to explode or bake it, or without applying any surface coating. , heat-resistant thick slate (cement tile),
Heat-resistant slate (including paper-making method), heat-resistant tile, heat-resistant calcium silicate board, heat-resistant sidewalk board, heat-resistant paving board 1 heat-resistant foam mortar board, heat-resistant ALC board, heat-resistant PC board,
Maku can be widely used as a manufacturing method for heat-resistant insulation tubes, fire-resistant covering plates, fire-resistant covering tubes, etc.! '-The heat-resistant concrete layer is fixed to an uncured concrete base material, and the surface is coated with an inorganic paint or a ring and fixed by heating, and an uneven pattern such as a tiled pattern is formed to form a heat-resistant PC board. (Inorganic paint or axle weight can be applied directly to the heat-resistant concrete surface.) Unlike conventional tiled PC boards, tiles do not peel off over time, and they are similar to uncured concrete substrates. Heat-resistant concrete II-) fif: Heat-resistant sidewalk boards and paving boards that are fixed heat-resistant concrete or simply heat-resistant concrete with an uneven pattern formed on the surface, and that are heated and fixed with 41I and textured paint or glaze are aesthetically pleasing. It has many effects such as being able to prevent slipping while exhibiting

[Brief explanation of the drawing]

Attached drawings - Figures 1 and 2 are cross-sectional views of two examples of heat-resistant concrete. 1...Base material 2...°Heat-resistant concrete layer 3...
...Surface finish layer patent applicant Mitsuo Research Institute Representative 1 & Director Koji Mitsuo Figure 1 Figure 2r1! 4 Kozue and 1 (Otome) Sho Yada 9 T+L”) 2 Ru mortar et Seikehadaru 1 1, Takei Cormorant/yL-+t! 4 Tsugu BE sentence 6-19 Woman 113
No. 2! Q1) Fake Kibo t'tl Hiroshi Makushima]; Riichi) -
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Claims (1)

[Claims] (11. A mixture containing blast furnace slag, one or more of cement, gypsum, and binder, or a heat-resistant aggregate; 1. Hardened t% mold) Heat-resistant concrete. (21) The heat-resistant concrete according to claim 1, characterized in that a large number of communicating holes are formed. 7't is made by first hardening a mixture containing two or more types of aggregates or further heat-resistant aggregates, then heating and rapidly cooling, and secondly hardening the mixture by humidifying and heating or heating with water. A method for producing heat-resistant Yunkrete characterized by
(4) The method for producing heat-resistant concrete according to claim 3, characterized in that the heat-resistant concrete has a large number of communicating holes.