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Title: Exposure testing of Hycrete concrete additive in a wastewater treatment environment : final report on Project F09-AR05B
Authors: Sweeney, Steven C.
Keywords: Corrosion and anti-corrosives
Corrosion resistant materials
Reinforced concrete--Corrosion
Publisher: Construction Engineering Research Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: ERDC/CERL;TR-17-11
Abstract: Abstract: The corrosion of reinforced concrete in wastewater systems is a costly ongoing problem for the Department of Defense (DoD). Capillary action makes concrete vulnerable to penetration by highly corrosive chemicals transported by wastewater. Progressive corrosion of embedded steel reinforcement greatly increases internal stresses on the concrete, ultimately causing premature fractures and spalls. Researchers hypothesized that corrosion in such aggressive environments could be mitigated using a hydrophobic concrete admixture to inhibit penetration of corrosive liquids into wastewater treatment infrastructure, thereby reducing stresses on the materials and extending service life. This study tested and evaluated one such admixture, a patented material called Hycrete. This evaluation exposed test coupons within the sewage effluent system at Fort Detrick, MD. Under the two year duration of this test, the presence of Hycrete had no noticeable influence on performance of concrete exposed to sewer effluent or gasses. Visual appearance did not dramatically differ and there were no significant changes chemical composition. The results suggest that neither the Hycrete nor the reference concrete specimens were affected by chemical leeching or intrusion during the two-year demonstration period. The return on investment for this effort was, therefore, zero.
Appears in Collections:Technical Report

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