NDT World NDT World В мире неразрушающего контроля 1609-3178 33861 10.12737/article_5dcbfb76645342.02364219 НК в США NDT in USA НК в США Nondestructive Testing and Evaluation of Reinforced Concrete Bridge Decks: A Case Study Неразрушающий контроль и оценка состояния железобетонных покрытий мостового полотна: анализ конкретного примера Аме-Иахя Шериф Amer-Yahia Cherif cherifa@resourceinternational.com Мэджидзэдех Тодд Majidzadeh Todd Инженерно-строительная компания Колумбус США Resource International, Inc. Columbus United States of America Инженерно-строительная компания Колумбус США Resource International, Inc. Columbus United States of America 22 4 18 25 https://zh-szf.ru/en/nauka/article/33861/view

В статье описывается детальное исследование покрытий полотна двух мостов с использованием георадара, инфракрасной термографии, дорожного утюга с цепью, картирования трещин, отбора кернов и измерения концентрации ионов хлора. Обсуждается использование георадара для обнаружения дефектов полотна моста на уровне стальной арматуры и использование термографии для идентификации расслоения покрытия. Полученные результаты сравниваются с результатами зондирования покрытий. Обсуждена корреляция между повреждениями, обнаруженными с использованием георадара и термографии, и обычной технологией дорожного утюга с цепью. Методы НК, использованные в этом исследовании, дополняли друг друга для получения максимального объёма информации и более эффективной оценки состояния покрытий мостового полотна. Инфракрасная термография была эффективной при обнаружении неглубокого расслоения. Георадар обнаружил повреждения на уровне арматурнго профиля и повреждения, простирающиеся вверх от коррозионной арматуры примерно на 2,5 см от покрытия. В отличие от дорожного утюга, который обнаруживает разрывы на последней стадии, георадар обнаруживает признаки, связанные с коррозией арматуры, такие как высокое содержание влаги и высокие концентрации хлоридных ионов, на ранних стадиях. Предлагается комплексные меры восстановления этих двух элементов покрытия.

This paper describes a thorough investigation of two bridge decks using ground penetrating radar (GPR), infrared thermography (IR), chain drag, crack mapping, coring, and chloride ion concentration measurements. It discusses the use of GPR for the detection of bridge deck flaws at the reinforcing steel level and the use of IR for the identification of overlay delamination. The GPR and IR results are compared to the results obtained from sounding the bridge decks. The correlation between the damages detected using GPR and IR and the conventional chain drag technique is discussed. Combined together, the nondestructive methods used in this study complemented each other to provide the maximum amount of information and create a more effective bridge deck condition assessment. Infrared thermography was effective in the detection of shallow delamination. Ground penetrating radar detected damage at the rebar level and damage extending upward from the corroding rebar to about 2.5 cm from the deck surface. Unlike chain drag, which detects discontinuities in advanced stages, GPR detected features associated with rebar corrosion, such as high moisture content and high chloride ion concentrations, in early stages. A comprehensive rehabilitation approach of the two structures is proposed.

 покрытие мостового полотна расслоение георадар ИК-термография дорожный утюг картирование трещин отбор кернов ремонт bridge deck delamination GPR IR chain drag crack mapping coring chloride ion tests rehabilitation

Rossow M. Bridge Preservation Guide: Maintaining a State of Good Repair Using Cost Effective Investment Strategies. - Washington, DC: Federal Highway Administration, 2011 / Publ. No. FHWA-HIF-11042. - 28 p. Доступно https://www.cedengineering.com/userfiles/FHWA%20Bridge%20Preservation%20Guide.pdf, accessed 4 October 2019. Rossow M. Bridge Preservation Guide: Maintaining a State of Good Repair Using Cost Effective Investment Strategies. - Washington, DC: Federal Highway Administration, 2011 / Publ. No. FHWA-HIF-11042. - 28 p. Dostupno https://www.cedengineering.com/userfiles/FHWA%20Bridge%20Preservation%20Guide.pdf, accessed 4 October 2019. Comprehensive Bridge Deck Deterioration Mapping of Nine Bridges by Nondestructive Evaluation Technologies / Final Report SPR-NDEB (90)- 8H-00. - Ames, IA: Iowa Department of Transportation, 2011. - 184 p. Доступно http://publications.iowa.gov/13600/1/SPR-NDEB%2890%29--8H-00%29Final_ReportNonDestructiveBrdgeDeckEvalApril2011.pdf, accessed 4 October 2019. Comprehensive Bridge Deck Deterioration Mapping of Nine Bridges by Nondestructive Evaluation Technologies / Final Report SPR-NDEB (90)- 8H-00. - Ames, IA: Iowa Department of Transportation, 2011. - 184 p. Dostupno http://publications.iowa.gov/13600/1/SPR-NDEB%2890%29--8H-00%29Final_ReportNonDestructiveBrdgeDeckEvalApril2011.pdf, accessed 4 October 2019. Nondestructive Testing to Identify Concrete Bridge Deck Deterioration / SHRP 2 Report S2-R06A-RR-1. - Washington, DC: Transportation Research Board, 2013. - 85 p. Доступно http://onlinepubs.trb.org/onlinepubs/shrp2/SHRP2_S2-R06A-RR-1.pdf, accessed 4 October 2019. Nondestructive Testing to Identify Concrete Bridge Deck Deterioration / SHRP 2 Report S2-R06A-RR-1. - Washington, DC: Transportation Research Board, 2013. - 85 p. Dostupno http://onlinepubs.trb.org/onlinepubs/shrp2/SHRP2_S2-R06A-RR-1.pdf, accessed 4 October 2019. ASTM D6087-08. Standard Test Method for Evaluating Asphalt-Covered Concrete Bridge Decks Using Ground Penetrating Radar. - West Conshohocken, PA: American Society of Testing and Materials, 2015, - 6 p. ASTM D6087-08. Standard Test Method for Evaluating Asphalt-Covered Concrete Bridge Decks Using Ground Penetrating Radar. - West Conshohocken, PA: American Society of Testing and Materials, 2015, - 6 p. ASTM D4788-03. Standard Test Method for Detecting Delaminations in Bridge Decks Using Infrared Thermography. - West Conshohocken, PA: American Society of Testing and Materials, 2013, - 3 p. ASTM D4788-03. Standard Test Method for Detecting Delaminations in Bridge Decks Using Infrared Thermography. - West Conshohocken, PA: American Society of Testing and Materials, 2013, - 3 p. Milovanovic B., Pečur I. B. Review of Active IR Thermography for Detection and Characterization of Defects in Reinforced Concrete. - J.l of Imaging. 2016. V. 2. No.11. Доступно https://doi.org/10.3390/jimaging2020011, accessed 7 October 2019. Milovanovic B., Pečur I. B. Review of Active IR Thermography for Detection and Characterization of Defects in Reinforced Concrete. - J.l of Imaging. 2016. V. 2. No.11. Dostupno https://doi.org/10.3390/jimaging2020011, accessed 7 October 2019. Maser I. C. Integration of Ground Penetrating Radar and Infrared Thermography for Bridge Deck Condition Evaluation. - In: 7th International Symposium on. Nondestructive Testing in Civil Engineering (NDTCE), - Nantes, France: 2009. Доступно https://www.ndt.net/article/ndtce2009/papers/121.pdf, accessed 7 October 2019. Maser I. C. Integration of Ground Penetrating Radar and Infrared Thermography for Bridge Deck Condition Evaluation. - In: 7th International Symposium on. Nondestructive Testing in Civil Engineering (NDTCE), - Nantes, France: 2009. Dostupno https://www.ndt.net/article/ndtce2009/papers/121.pdf, accessed 7 October 2019. ASTM D4580/D4580M-12. Standard Practice for Measuring Delaminations in Concrete Bridge Decks by Sounding. - West Conshohocken, PA: American Society of Testing and Materials, 2012. - 4 p. ASTM D4580/D4580M-12. Standard Practice for Measuring Delaminations in Concrete Bridge Decks by Sounding. - West Conshohocken, PA: American Society of Testing and Materials, 2012. - 4 p. RAD AN 7. - Nashua, NH: Geophysical Survey Systems, Inc. (GSSI), 2011. RAD AN 7. - Nashua, NH: Geophysical Survey Systems, Inc. (GSSI), 2011. Tinkey Y., Olsen L. Vehicle-Mounted Bridge Deck Scanner / IDEA Program Final Report. - Wheat Ridge, CO: Olsen Engineering, 2010. Tinkey Y., Olsen L. Vehicle-Mounted Bridge Deck Scanner / IDEA Program Final Report. - Wheat Ridge, CO: Olsen Engineering, 2010. AASHTO T 260 97th Edition. Standard Method of Test for Sampling and Testing for Chloride Ion in Concrete and Concrete Raw Materials. - Washington, DC: American Association of State Highway and Transportation Officials, 2016. AASHTO T 260 97th Edition. Standard Method of Test for Sampling and Testing for Chloride Ion in Concrete and Concrete Raw Materials. - Washington, DC: American Association of State Highway and Transportation Officials, 2016. ACI 318-2014. Building Code Requirements for Structural Concrete and Commentary. - Detroit, MI: American Concrete Institute, 2014. ACI 318-2014. Building Code Requirements for Structural Concrete and Commentary. - Detroit, MI: American Concrete Institute, 2014.