High-intensity waterproof underground pipe culvert and production method thereof

Abstract

The invention provides a high-intensity waterproof underground pipe culvert and a production method thereof, and relates to the technical field of concrete pipe culverts. The high-intensity waterproofunderground pipe culvert is made of the following raw materials: modified carbon fibers, wollastonite, mineral fibers, barium sulfate, talcum powder, sulfosalicylic acid, dimethylformamide, a flexibilizer and water. The high-intensity waterproof underground pipe culvert is high in mechanical performance, and high in tensile intensity and folding resistance, and is capable of inhibiting visible cracks, caused by shrinkage of the pipe culvert, in the inner wall; the pipe culvert is high in permeating resistance, high in cracking resistance, high in durability, and long in service life; the modified carbon fibers are uniform to disperse in a substrate; the produced pipe culvert is obviously high in abrasion resistance and remains outstanding in mechanical performance.

Description

technical field [0001] The invention relates to the technical field of concrete pipe culverts, in particular to a high-strength waterproof underground pipe culvert and a preparation method thereof. Background technique [0002] Culvert refers to a culvert constructed with reinforced concrete box-shaped pipe joints. Underground pipe culvert refers to a pipe buried below the surface, which is cast with reinforced concrete, commonly known as cement pipe, and is generally used as a water diversion pipe under a cofferdam dam. Ordinary pipe culverts are made of cement concrete. Cement concrete is a typical brittle material with low bending and tensile strength and deformation capacity, and weak fatigue and external erosion resistance. The pipe culvert made of cement concrete has the internal There will be more void structures. After the pipe culvert is in a humid environment for a long time, the internal void structure will increase, and even cracks will appear. Alkaline liquid ...

AI Technical Summary

Problems solved by technology

Ordinary pipe culverts are made of cement concrete. Cement concrete is a typical brittle material with low bending and tensile strength and deformation capacity, and weak fatigue and external erosion resistance. The pipe culvert made of cement concrete has the internal There will be more void structures. After the pipe culvert is in a humid environment for a long time, the internal void structure will increase, and even cracks will appear. Alkaline liquid corrosion, in this environment for a long time, will cause the mechanical strength of the pipe culvert to plummet, and then lead to water seepage in the underground pipe culvert

Therefore, there are great requirements for the strength and waterproof performance of underground pipe culverts, and in the prior art, the waterproof performance of underground pipe culverts is relatively poor

[0003] At present, the production of concrete pipe culverts is to use a certain proportion of ordinary Portland cement as the cementitious material, and coarse and fine aggregates such as sand and stone, add an appropriate amount of water reducing agent, and add water to stir in a mixer to form ordinary concrete. Concrete pipes and steel cylinder concrete pipes, due to the brittleness of ordinary concrete, have poor compactness, flexibility, and impact resistance under external forces, and are prone to inner wall cracks, which affect the durability of concrete pipes and steel cylinder concrete pipes resistance, impermeability and crack resistance