A device and method for electrically accelerated concrete dissolution test under high hydraulic gradient

A test method, hydraulic gradient technology, applied in the field of simulation test, can solve the problem of high sealing performance of the corrosion test chamber, and achieve stable electrochemical potential energy, good sealing performance and remarkable effect

Active Publication Date: 2019-09-03
HOHAI UNIV
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high water pressure of the osmotic dissolution test, which usually reaches 1~2MPa, the requirements for the strength, stiffness and sealing between the corrosion test chamber and the corrosion test piece are high. The existing research is limited to the test equipment and test technology, and it cannot For osmotic erosion test

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A device and method for electrically accelerated concrete dissolution test under high hydraulic gradient
  • A device and method for electrically accelerated concrete dissolution test under high hydraulic gradient
  • A device and method for electrically accelerated concrete dissolution test under high hydraulic gradient

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific preferred embodiments.

[0041] Such as figure 1 As shown, an electrically accelerated concrete corrosion test device under a high hydraulic gradient includes a test chamber, an external press 11, an external power source 2 and test electrodes.

[0042] At least one pressure test chamber is arranged in the test chamber, preferably 3 pressure test chambers, and the number of pressure test chambers is specifically set according to usage requirements. The 3 pressure test chambers are parallel to each other, such as image 3 As shown, they are pressure test room 1 28, pressure test room 2 29 and pressure test room 3 30 respectively. The 3 pressure test rooms can carry out 3 groups of tests at the same time, carry out controlled variable tests, and study under different pressures and different water temperatures, The corrosion of concrete specimens under...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
Login to view more

Abstract

The invention discloses a device and a method for testing the corrosion of electrically accelerated concrete under a high hydraulic gradient. The device comprises a test chamber, an external pressuremachine, an external power supply and test electrodes, wherein the test chamber is internally provided with at least one pressure test cabinet, a test piece fixing groove is formed in the middle partof the pressure test cabinet, and a concrete test piece is used for partitioning the pressure test cabinet into a positive electrode test area and a negative electrode test area; the test electrodes comprise a test positive electrode and a test negative electrode, the test positive electrode is arranged inside the positive electrode test area, the test negative electrode is arranged inside the negative electrode test area, and each of the positive electrode test area and the negative electrode test area is filled with a conductive corrosion solution; the external pressure machine is connectedwith a pressure pipeline, and the other end of the pressure pipe stretches into the conductive corrosion solution in the positive electrode test area; and drainage sampling pipes are arranged at the bottom of the positive electrode test area and the bottom of the negative electrode test area respectively. The influence of permeating corrosion for concrete performance can be tested under long-termconstant high hydraulic gradient effect, related test data can be measured, and concrete corrosion test research is carried out.

Description

technical field [0001] The invention relates to the field of simulation tests, in particular to an electrically accelerated concrete corrosion test device and method under high hydraulic gradient. Background technique [0002] The hydraulic concrete structure is in contact with environmental water for a long time, which is prone to corrosion, and the internal solid-phase calcium dissolves and precipitates under the action of convection and diffusion, resulting in structural deterioration, lower bearing capacity, and endangering engineering safety. Dam structures such as concrete panels, anti-seepage curtains, and deep tunnels operate under high hydraulic gradients for a long time. The ion precipitation effect of seepage water flow is much greater than the diffusion effect caused by concentration differences. The deterioration speed is compared with the contact between gate piers and bridge piers. Erosion is faster. At present, a number of high dam projects built at home and...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): G01N17/02
Inventor 张开来沈振中姚皓铮朱必鑫张恺封康辉谈家诚韩逸凡周泽宇
Owner HOHAI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap