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All Department of Defense (DoD), Army, federal government, and privatesector facilities experience the problem of concrete deteriorating via alkalisilica 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. DISCLAIMER: The contents of this report are not to be used for advertising, publication, or promotional purposes. Citation of trade names does not constitute an official endorsement or approval of the use of such commercial products. All product names and trademarks cited are the property of their respective owners. The findings of this report are not to be construed as an official Department of the Army position unless so designated by other authorized documents. DESTROY THIS REPORT WHEN NO LONGER NEEDED. DO NOT RETURN IT TO THE ORIGINATOR. ERDC/CERL TR-19-18 iii

Demonstration of electro-osmotic pulse (EOP) technology to mitigate alkali-silica reaction in concrete pavement : final report on Project F08-AR24