Title:
METHOD FOR REAL-TIME ON-LINE MONITORING OF CONCRETE FREEZE-THAW DAMAGE
Document Type and Number:
WIPO Patent Application WO/2013/075584
Kind Code:
A1
Abstract:
Disclosed is a method for real-time on-line monitoring of concrete freeze-thaw damage. The method comprises: firstly, embedding pairwise graded electrical resistance probes 0-50 mm into a concrete monitoring surface, the pairwise graded electrical resistance probes using corrosion-resistant metal sticks, the insertion depth gradient of the different pairs of electrical resistance probes being 1-20 mm, and the insertion depth gradient between the pair of electrical resistance probes near to the surface not exceeding 5 mm; then, transmitting the concrete impedance value measured by the pairwise graded electrical resistance probes to a monitoring centre to be processed; and finally, judging the freeze-thaw scaling state of the concrete by means of abrupt changes in the concrete impedance values. Based on the electrical resistance probes and the monitoring centre, the present invention can achieve on-line monitoring of concrete freeze-thaw damage.
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Inventors:
ZHOU YONG (CN)
LU XINGYING (CN)
SHAO XINPENG (CN)
JI HUI (CN)
GUO BAOLIN (CN)
WANG XIAOQIAN (CN)
LU XINGYING (CN)
SHAO XINPENG (CN)
JI HUI (CN)
GUO BAOLIN (CN)
WANG XIAOQIAN (CN)
Application Number:
PCT/CN2012/084198
Publication Date:
May 30, 2013
Filing Date:
November 07, 2012
Export Citation:
Assignee:
SHANDONG HI SPEED QINGDAO HIGHWAY COMPANY LTD (CN)
UNIV TSINGHUA (CN)
UNIV TSINGHUA (CN)
International Classes:
G01N27/02; G01N17/00; G01N33/38
Domestic Patent References:
| WO1996030741A1 | 1996-10-03 | |||
| WO2002010715A1 | 2002-02-07 |
Foreign References:
| CN1438478A | 2003-08-27 | |||
| CN1837805A | 2006-09-27 | |||
| CN101226187A | 2008-07-23 | |||
| DE3112183A1 | 1982-10-14 | |||
| CN102507661A | 2012-06-20 |
Other References:
XU, XUEJIN ET AL.: "Prediction of the life of concrete structures under the effects of freezing-thawing and other special environments", PROCEEDINGS OF SCIENTIFIC FORUM OF DURABILITY AND DESIGN METHODS OF CONCRETE STRUCTURES IN COASTAL REGIONS AND THE 6TH NATIONAL ACADEMIC SEMINAR ON CONCRETE DURABILITY, 2004, pages 75 - 83
LI, MEILI ET AL.: "Electrical Resistance Measurement to Assess Curing Efficiency of Concrete", JOURNAL OF BUILDING MATERIALS, vol. 14, no. 4, August 2011 (2011-08-01), pages 473 - 477
YANG ZHENGHONG ET AL.: "Study of freezing and thawing test of concrete by AC impedance technique", JOURNAL OF BUILDING MATERIALS, vol. 2, no. 4, December 1999 (1999-12-01), pages 365 - 368
PAN, ZHIYUAN: "Use CFRC's Functional Performance to Monitoring the Damage in Concrete Structure", CHINESE MASTER'S THESES, 15 March 2006 (2006-03-15), pages 31 - 38
LIU, KAI ET AL.: "Durability monitoring of bridges", CORROSION AND PROTECTION, vol. 27, no. 4, April 2006 (2006-04-01), pages 178 - 180
CAI, H. ET AL.: "Freeze-thaw durability of concrete: ice formation process in pores", CEMENT AND CONCRETE RESEARCH, vol. 28, no. 9, 1998, pages 1281 - 1287
CAO, JINGYAO ET AL.: "Damage evolution during freeze-thaw cycling of cement mortar, studied by electrical resistivity measurement", CEMENT AND CONCRETE RESEARCH, vol. 32, 2002, pages 1657 - 1661
RAUPACH, M. ET AL.: "Long-term durability of hydrophobic treatment on concrete", SURFACE COATINGS INTERNATIONAL PART B: COATINGS TRANSACTIONS, vol. 88, May 2005 (2005-05-01), pages 127 - 133, XP055069829
LI, MEILI ET AL.: "Electrical Resistance Measurement to Assess Curing Efficiency of Concrete", JOURNAL OF BUILDING MATERIALS, vol. 14, no. 4, August 2011 (2011-08-01), pages 473 - 477
YANG ZHENGHONG ET AL.: "Study of freezing and thawing test of concrete by AC impedance technique", JOURNAL OF BUILDING MATERIALS, vol. 2, no. 4, December 1999 (1999-12-01), pages 365 - 368
PAN, ZHIYUAN: "Use CFRC's Functional Performance to Monitoring the Damage in Concrete Structure", CHINESE MASTER'S THESES, 15 March 2006 (2006-03-15), pages 31 - 38
LIU, KAI ET AL.: "Durability monitoring of bridges", CORROSION AND PROTECTION, vol. 27, no. 4, April 2006 (2006-04-01), pages 178 - 180
CAI, H. ET AL.: "Freeze-thaw durability of concrete: ice formation process in pores", CEMENT AND CONCRETE RESEARCH, vol. 28, no. 9, 1998, pages 1281 - 1287
CAO, JINGYAO ET AL.: "Damage evolution during freeze-thaw cycling of cement mortar, studied by electrical resistivity measurement", CEMENT AND CONCRETE RESEARCH, vol. 32, 2002, pages 1657 - 1661
RAUPACH, M. ET AL.: "Long-term durability of hydrophobic treatment on concrete", SURFACE COATINGS INTERNATIONAL PART B: COATINGS TRANSACTIONS, vol. 88, May 2005 (2005-05-01), pages 127 - 133, XP055069829
Attorney, Agent or Firm:
JINAN SHUNYUAN PATENT AGENCY CO., LTD. (CN)
济南舜源专利事务所有限公司 (CN)
济南舜源专利事务所有限公司 (CN)
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