Concrete pipe anti-leak treatment technique and special device

Abstract

The invention relates to a permeability-resistance processing technology of concrete pipes and special equipment thereof. The steps of the permeability-resistance processing technology are as follows: (1) the concrete pipe is coaxially sheathed outside of an inner container of a steel cylinder on a pedestal, and the female end of the concrete pipe is sheathed with the pedestal in a sealing way; (2) the spigot end of the concrete pipe is coaxially embedded and installed in an internal groove of a sealing cover and is sealed by a sealing ring of the sealing cover; (3) an outlet valve on the sealing cover is opened, and a return valve on a return pipe is closed; then an intake valve is opened and a topping-up pump is turned on, a permeability-resistance agent is flowed in a charging cavity and the pressure thereof is kept constantly for 1-10 minutes; (4) releasing the pressure; (5) dismounting the sealing cover and the concrete pipe, that is, the permeability-resistance treatment of the concrete pipes is finished. The permeability-resistance processing technology of concrete pipes adopts the special equipment and is carried out automatically and mechanically. The permeability-resistance treatment has low cost and high production efficiency, is timesaving and laborsaving, and can carry out mechanical permeability-resistance treatment to concrete pipes with small calibers.

Description

technical field [0001] The invention relates to the field of concrete pipes, in particular to a concrete pipe anti-seepage process and special equipment used in the process. Background technique [0002] During the manufacturing process of concrete pipes, microcracks will inevitably occur on the inner wall of the pipe. The reasons are as follows: 1. In the early hardening stage of pouring concrete, microcracks are formed due to plastic shrinkage caused by the exudation of water and water loss in the concrete ; 2. In the late stage of concrete hardening, stress will form dry shrinkage cracks and microcracks due to temperature changes. Although these microcracks are allowed to appear on the concrete pipe body to a certain extent, they often seriously affect the impermeability of the overall concrete pipe during later use. At present, in the anti-seepage treatment process of concrete pipes, the anti-seepage treatment of dry shrinkage cracks and micro-cracks on the inner wall o...

AI Technical Summary

Problems solved by technology

Although these microcracks are allowed to appear on the concrete pipe body to a certain extent, they often seriously affect the impermeability of the overall concrete pipe during later use.

At present, in the anti-seepage treatment process of concrete pipes, the anti-seepage treatment of dry shrinkage cracks and micro-cracks on the inner wall of concrete pipes mainly adopts artificial whitewashing cement mortar or epoxy resin repair method, although it can achieve a certain anti-seepage effect, but There are also the following defects: 1. The repair cost is high and the efficiency is low; 2. The repair effect is not ideal, and it takes a lot of work; 3. It is difficult to repair the nozzles with a diameter of less than 800mm only by manual labor

[0003] No special equipment for anti-seepage treatment of concrete pipes has been found so far

Images