METHOD OF EXPERIMENTAL DETECTION OF GRADIENT OF VARIATION OF LONG-TERM STRENGTH OF LOADED AND CORRODED CONCRETE AND DEVICE FOR ITS REALISATION Russian patent published in 2015 - IPC G01N3/08 G01N3/60 G01N17/00 

FIELD: construction.

SUBSTANCE: difference is tracked between deformations generated as a result of sample testing for simultaneous power loading and aggressive medium impact, and previously calibrated data, produced by tests for long-term strength of samples under conditions of only power loading, control of the load at the sample is carried out, as well as its timely reduction so that stresses in the cross section of the sample remain permanent before start of sample damage. The device comprises a reservoir filled with an aggressive solution, a power installation frame, movable and fixed cross beams with cylindrical hinged joints for realisation of concentrated stress at a reinforced concrete sample. The loading device is a lever system using water filling the reservoir as the load, equipped with a bleeding tube with a valve, operation of which is regulated by variation of parameters of strain gauge instruments at the sample.

EFFECT: possibility to experimentally detect gradient of variation of long-term strength in time from load application start and corrosive impact of medium to loaded and corroded concrete test sample damage at the specified stable value of stresses in the sample cross section, using an improved model of a testing bench compared to the prototype.

2 cl, 2 dwg