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https://hdl.handle.net/11681/34123Full metadata record
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | McInerney, Michael K. | - |
| dc.contributor.author | Marshall, Orange S. | - |
| dc.contributor.author | Noyce, Paul A. | - |
| dc.contributor.author | Blohm, G. | - |
| dc.date.accessioned | 2019-09-20T18:15:34Z | - |
| dc.date.available | 2019-09-20T18:15:34Z | - |
| dc.date.issued | 2019-08 | - |
| dc.identifier.govdoc | ERDC/CERL TR-19-18 | - |
| dc.identifier.uri | https://hdl.handle.net/11681/34123 | - |
| dc.identifier.uri | http://dx.doi.org/10.21079/11681/34123 | - |
| dc.description | Technical Report | - |
| dc.description.abstract | All Department of Defense (DoD), Army, federal government, and private-sector facilities experience the problem of concrete deteriorating via alkali-silica reaction (ASR). ASR is a form of concrete corrosion that slowly deteriorates concrete from the inside by forming highly expansive gels that cause cracking and swelling of the concrete matrix. This project evaluated Electro-Osmotic Pulse (EOP) technology to mitigate ASR in an area of the visitor’s ramp at Campbell Army Airfield. An EOP system was designed, installed, and monitored in a concrete pavement section affected by ASR. In addition to installing EOP technology, concrete moisture monitoring probes were installed at selected locations. The performance of the EOP system was evaluated by recording temperature and moisture levels inside the concrete for a period of nine months. The ability of the EOP system to mitigate ASR is inconclusive. Although there are indications that moisture is being removed from the concrete pavement, it is not clear that the concrete’s internal relative humidity has been reduced below 80%, the moisture reduction value that ensures ASR will not occur. The calculated return on investment (ROI) for the project was 5.68. However, a long-term approach for performance monitoring must be completed before the technology can be recommended. | en_US |
| dc.description.sponsorship | DoD Corrosion Prevention and Control Program (U.S.) | en_US |
| dc.description.sponsorship | United States. Office of the Under Secretary of Defense for Acquisition, Technology, and Logistics. | - |
| dc.description.tableofcontents | Abstract .................................................................................................................................... ii Figures and Tables ................................................................................................................... v Preface ..................................................................................................................................... vi Unit Conversion Factors ........................................................................................................ vii 1 Introduction ...................................................................................................................... 1 1.1 Problem statement ............................................................................................ 1 1.2 Objective............................................................................................................. 2 1.3 Approach ............................................................................................................ 3 1.4 Metrics................................................................................................................ 3 2 Technical Investigation ................................................................................................... 4 2.1 Project overview ................................................................................................. 4 2.2 Technology overview .......................................................................................... 4 2.3 Field work ........................................................................................................... 6 2.3.1 System design ............................................................................................................. 8 2.3.2 Installation of the EOP technology ........................................................................... 10 2.4 Commissioning ............................................................................................... 18 2.4.1 Humidity and temperature sensors ......................................................................... 18 2.4.2 Pavement crack survey ............................................................................................. 21 2.5 Performance monitoring/testing .................................................................... 21 2.5.1 Initial energizing ........................................................................................................ 21 2.5.2 Four-month inspection .............................................................................................. 22 2.5.3 Final inspection ......................................................................................................... 22 3 Discussion ....................................................................................................................... 24 3.1 Results.............................................................................................................. 24 3.2 Lessons learned ............................................................................................. 28 3.2.1 Monitoring probes ..................................................................................................... 28 3.2.2 Probe depth inaccuracies ......................................................................................... 28 4 Economic Summary ....................................................................................................... 29 4.1 Costs and assumptions .................................................................................. 29 4.1.1 Alternative 1 (Baseline Scenario) ............................................................................. 30 4.1.2 Alternative 2 (demonstrated technology) ................................................................ 30 4.2 Return on investment computation ................................................................ 31 5 Conclusions and Recommendations ........................................................................... 33 5.1 Conclusions ..................................................................................................... 33 5.2 Recommendations ......................................................................................... 33 5.2.1 Applicability ............................................................................................................... 33 5.2.2 Implementation ......................................................................................................... 33 References ............................................................................................................................. 35 Appendix A: Design Calculations ........................................................................................ 37 Appendix B: As-Built Drawings and Component Specifications ..................................... 40 Appendix C: Slab Monitoring Probes, EOP Power Supplies, and Weather Data ........... 65 Appendix D: Pavement Survey with Photos of Dimensioned Cracks .......................... 104 Report Documentation Page | - |
| dc.format.extent | 153 pages / 42.51 Mb | - |
| dc.format.medium | PDF/A | - |
| dc.language.iso | en_US | en_US |
| dc.publisher | Construction Engineering Research Laboratory (U.S.) | en_US |
| dc.publisher | Engineer Research and Development Center (U.S.) | - |
| dc.relation.ispartofseries | Technical Report (Engineer Research and Development Center (U.S.)) ; no. ERDC/CERL TR-19-18 | - |
| dc.rights | Approved for Public Release; Distribution is Unlimited | - |
| dc.source | This Digital Resource was created in Microsoft Word and Adobe Acrobat | - |
| dc.subject | Electro-osmosis | en_US |
| dc.subject | Electroosmotic dewatering | en_US |
| dc.subject | Concrete--Corrosion | en_US |
| dc.subject | Pavements, Concrete--Maintenance and repair | en_US |
| dc.title | Demonstration of electro-osmotic pulse (EOP) technology to mitigate alkali-silica reaction in concrete pavement : final report on Project F08-AR24 | en_US |
| dc.type | Report | en_US |
| Appears in Collections: | Technical Report | |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| ERDC-CERL TR-19-18.pdf | 43.53 MB | Adobe PDF |  View/Open |