JPS58153605A - Manufacture of double structure inner surface ceramic concrete pipe - 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 relates to a method for manufacturing a concrete pipe whose inner 111 surfaces are coated with a heated and fused layer of glaze.

If the inner wall of a concrete pipe is coated with a heated and fused layer of glaze, will it be possible to obtain a concrete pipe that is highly corrosion resistant and suitable for use as a sewer pipe in I#?Ordinary concrete is weak against high heat and is made of reinforcing steel. It is quite difficult to make a concrete pipe with a ceramic inner surface, as the length of the pipe is stretched by heat, and the tube body is often damaged due to the roughness of the troweling process.

The present invention has been made in view of the above-mentioned circumstances. After manufacturing a concrete pipe and forming a heated molten layer of glaze on its inner wall surface, the outside 11 is covered with ordinary concrete with one reinforcing steel.

Hereinafter, the present invention will be explained in more detail.

In the present invention, first, unreinforced concrete pipes are manufactured with fireproof concrete using alumina cement, or
The aggregate used is a fire-resistant material such as chamotte. Further, although this concrete pipe can be made using centrifugal force like the Hiem pipe, it is not necessarily limited to this.

Next, 11 surfaces of this concrete pipe were coated with a 600% glaze similar to that used in Ceramics II.
A low-melting glaze that is melted and made into ceramics at a relatively low temperature of ℃~700℃@i degrees is evenly sprayed onto the frame fabric, and after drying, it is heated inside the tube, and then the tube is heated. Glaze layer 170 without turning
The glaze is heated to about 0°C and melted in a short time to form a heated and molten layer of glaze on the inner wall surface.

Next, this concrete pipe is used as an indoor bath, and the space between this and the outside is filled with reinforcing bars (concrete), and the outside of the concrete pipe is wrapped with concrete. The concrete for this outer cylinder is made of ordinary cement and aggregate, and has a slump of 0 @ straight 111iii! Kneaded 1
It is preferable to add it- etc. and perform gs.

According to the invention, the illustrated product can be obtained, for example:
1 is the concrete pipe of the inner piece manufactured first, 2 is the heating i1 [i1 layer of the glaze formed on the inner 11ril of the concrete pipe 1, and 3 is the outer 1llt-pack [
rl14! I concrete, 4 is W! fence concrete 3
Reinforcing bars installed in a circle, 5 are covered with concrete 3 -, ·: Snow layer formed on the body. □ Above 11! As is clear from the above, in the present invention, a plain concrete pipe is first made of fireproof concrete using alumina cement 2, a heated molten layer of glaze is formed inside the pipe, and then a layer of glaze is heated and melted on the outside of the pipe. # is made of ordinary concrete with reinforcing steel, so the tube body will not be damaged by the heat that forms a heated molten layer of glaze on the inner wall surface, and the inner porcelain porcelain has no problem in terms of strength. Concrete pipes can be manufactured easily.

[Brief explanation of the drawing]

The drawing is a cross-sectional view of an example of a double-walled internally porcelain concrete pipe manufactured according to the present invention. ! = concrete pipe, 2: heated molten layer of glaze, 3: 1 covered concrete 17-), 4: reinforcing bar, 5: pedestal. Agent Patent Attorney Tsukasa Somejo

Claims (1)

[Claims] After manufacturing an unreinforced concrete pipe with fireproof concrete using alumina cement and forming a layer of heat-melted glaze on 11 of its surfaces, the outer lI is made of ordinary concrete with reinforcing steel [a A method for manufacturing a double-layered internally porcelain concrete pipe.