A device and test method for accurately testing the corrosion rate of steel bars along the length direction

Abstract

The invention discloses an apparatus and a testing method used for accurate testing of corrosion rate of steel bars along length directions. The apparatus comprises a steel bar, a fixing device, a testing device and a data acquisition device; the testing device comprises a container, water and an automatic weighing instrument; the container is filled with water; the data acquisition device comprises a computer, and a data transmission wire; the automatic weighing instrument is connected to the computer via the data transmission wire; the fixing device comprises a fixing frame, an automatic lifting platform, and a clamp; the automatic lifting platform is arranged on a lower cross beam of the fixing frame; lifting speed of the automatic lifting platform can be adjusted; the container is arranged on the automatic lifting platform; the automatic weighing instrument is arranged on an upper cross beam of the fixing frame; the upper end of the clamp is connected with the automatic weighing instrument, and the lower end of the clamp is connected with the steel bar; and the automatic lifting platform and the computer are connected. Characteristics of the apparatus are that: assembling and dismounting are simple; operation is convenient; devices demanded by testing are few; the apparatus can be used repeatedly; and the corrosion rate of the steel bar along length direction can be tested accurately.

Description

technical field [0001] The invention relates to a device and a testing method for accurately testing the corrosion rate of steel bars along the length direction, belonging to the field of concrete construction. Background technique [0002] In the field of civil engineering, steel bars and concrete are currently the most widely used building materials in the world. However, due to the carbonation of concrete and the erosion of chlorides, the steel bars are corroded and the safety and durability of structures are reduced. Therefore, the corrosion of steel bars Research is a durability problem that needs to be solved urgently in engineering. [0003] At present, most of the methods for testing the corrosion rate of steel bars adopt the method specified in "Test Methods for Long-term Performance and Durability of Ordinary Concrete" (GBJ82-85): Take out the steel bars in the test piece, scrape off the concrete attached to the steel bars, and use 12% hydrochloric acid The soluti...

AI Technical Summary

Problems solved by technology

This device sets the scale on the fixed frame, and adjusts the up and down movement of the steel bar through manual operation, which is troublesome and has low accuracy; The fluctuations in the numbers from the automatic weighing instrument bring troubles to the automatic calculation of the experimental results by the computer

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