JPH03182302A - Manufacture of qualitatively pottery material composite cement product - Google Patents

Abstract

PURPOSE:To prevent the falling and/or breakage of a qualitatively pottery material and obtain a composite cement product, keeping the surface of the qualitatively pottery material in a very good condition, by a method wherein the qualitatively pottery material, whose exposed side surface is covered with a film intercepting the surface from alkaline atmosphere, is compounded and integrated upon forming the secondary product of cement and, subsequently, the secondary product is cured through autoclave curing. CONSTITUTION:In order not to contact water or water vapor, containing alkali, with the surface of a qualitatively pottery material, the surface of a tile is protected and coated with a material, standing against a high temperature and a high pressure an not permeating water and/or water vapor, such as a stainless steel foil, polyvinylidene chloride, epoxy resin, polyurethane, silicone or the like, and, then, is compounded and integrated upon forming the secondary product of cement and, thereafter, is cured through autoclave curing whereby a product, having a high strength and excellent surface, is manufactured. The tile is integrated with cement matrix by forming large lining foot whereby the possibility of separation may be eliminated.

Description

[Detailed description of the invention]

[INDUSTRIAL APPLICATION FIELD 1] The present invention relates to a method for manufacturing tile-cast precast concrete slabs and similar ceramic material composite cement products, which are mainly used as building materials. [Conventional technology] Conventionally, there are many gates that combine tiles with secondary cement products such as concrete, but this is the method. ■Method of gluing or crimping tiles onto the surface of poured concrete using adhesive or mortar; ■Method of attaching tiles to concrete pouring formwork on site first and pouring concrete. How to integrate. ■When manufacturing concrete using precast in a factory, etc., a method of manufacturing precast concrete products by attaching tiles to the precast concrete formwork first. ■In addition, in the case of large tiles or stones, there are methods such as physically bonding them to the existing concrete surface using hardware, but with the above method, there are many cases of tiles falling off.
There are concerns about adhesion performance. Therefore, for large plates like ■, it is necessary to use hardware in combination. Furthermore, in the method (2) above, the tiles are often damaged mainly due to cracks caused by drying shrinkage of the concrete. Although the above method (■) is highly safe, due to the problem of the alkali resistance of the glaze on the tile surface, high temperature and high pressure curing cannot be performed, and only low temperature steam curing of about 50 to 60 degrees Celsius can be performed, resulting in dimensional stability. It cannot be said that the durability is sufficient, and there is a risk of damage to large tiles. For this purpose, non-shrinkage cement has recently been developed and is being put into practical use, but it is expensive. [Problems to be Solved by the Invention] The present invention solves the problem that when a ceramic material composite cement product as described above is cured at high temperature and high pressure, the glaze on the tile surface reacts with alkali, deteriorating the quality and reducing the commercial value. The purpose of the present invention is to provide a method for producing an inexpensive ceramic material composite product that does not have to worry about the ceramic material peeling off or being damaged by devising a method that enables high-temperature and high-pressure curing to overcome the disadvantages of ceramic materials. shall be. [Means for Solving the Problems 1] The present invention provides a method for integrally bonding a ceramic material with a secondary cement product by coating the exposed surface of the ceramic material with a coating that blocks an alkaline atmosphere. Ceramic materials are combined into one piece when molding secondary cement products,
This is a method for producing a ceramic material composite cement product, which is then autoclaved for curing. As a film that blocks the alkaline atmosphere in a high temperature and high pressure environment, it is recommended to use, for example, (1) stainless steel foil, (2) sheets of polyvinylidene chloride, epoxy resin, polyurethane, silicone, etc.).

[Effect]

The glaze on the surface of ceramic materials such as tiles is made of one-cypress glass, and under high temperature and high pressure conditions, it reacts with alkali and becomes cloudy, impairing its commercial value. Protect the tile surface with a material that can withstand high temperatures and pressures and is impermeable to water and steam to prevent contact between tiles. After coating, the composite is fixed during molding of a secondary cement product, and then cured in an autoclave to produce a product with high strength and an excellent surface. By forming large soles, the tiles can be integrated with the cement matrix and eliminate concerns about delamination. [Example J The surface of the tile was coated with a protective material, 3.6 m Xl,
Concrete was poured into a 2 m precast concrete slab formwork at a pressure of 10 kg/cri''.
The mixture was cured in an autoclave at a temperature of 180° C. for 5 hours to prepare a ceramic material composite cement building material. ■Stainless steel foil, ■Epoxy resin sheet were used as tile surface protection materials. When autoclaved at 180℃ for 5 hours, the surface of the sample without protective material became cloudy, but
No change was observed in those to which the protective material was attached. [Effects of the Invention] According to the method of the present invention, it is possible to obtain a composite cement product in which the surface of the P41ifi organic material is kept in an extremely good condition. Furthermore, there is no need to worry about the ceramic material peeling off, especially those with large soles that are integrated with the base material are extremely reliable. ■The base material has good dimensional stability, so there is no risk of damage due to a single dimensional change. ■The base material can be ordinary cement, sand, etc. and is inexpensive.

Claims (1)

[Claims] 1. When integrating a ceramic material into a composite product with a secondary cement product, the exposed surface of the ceramic material is coated with a film that blocks the alkaline atmosphere, and the coated ceramic material is composited when forming the secondary cement product. A method for manufacturing a ceramic material composite cement product, which comprises integrating and then curing in an autoclave.