The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 11, 2016
Filed:
Nov. 07, 2012
Shandong Hi-speed Qingdao Highway Company Limited, Shandong, CN;
Tsinghua University, Beijing, CN;
Yong Zhou, Shandong, CN;
Xingying Lu, Beijing, CN;
Xinpeng Shao, Shandong, CN;
Hui Ji, Shandong, CN;
Baolin Guo, Shandong, CN;
Xiaoqian Wang, Shandong, CN;
TSINGHUA UNIVERSITY, Beijing, CN;
SHANDONG HI-SPEED QINGDAO HIGHWAY COMPANY LIMITED, Shandong, CN;
Abstract
A method for real-time and in-situ monitoring of freeze-thaw damage to concrete, comprising embedding pairs of gradient electrical resistance probes into a surface of concrete being monitored at a depth of 0-50 mm, the paired gradient electrical resistance probes having an anti-corrosion metal bar, with the buried depth gradient of different pairs of electrical resistance probes being in the range of 1 mm to 20 mm, and the buried depth gradient of the pair of electrical resistance probes nearest to the surface being less than 5 mm; transmitting an impedance value of the concrete measured by the paired gradient electrical resistance probes to a monitoring center for processing; and evaluating a spalling status of freeze-thaw damage to the concrete based on changes in impedance value which may be abrupt. Real-time in-situ monitoring of the freeze-thaw damage of concrete can be achieved by the electrical resistance probes and monitoring center of this invention.