Summary of field sites, concrete elements treated and types of treatment under the FHWA ASR Development and Deployment Program
| Field site (date treated) | Elements treated | Technologies evaluated |
|---|---|---|
| Alabama (2010) | Concrete arches on a bridge (above the roadway) |
|
| Arkansas (2012) | Concrete pavement |
|
| Delaware (2009) | Concrete pavement |
|
| Maine (2010) | Bridge abutments, wing walls and bridge columns |
|
| Massachusetts (2005 and 2010) | Highway barriers |
|
| Rhode Island (2012) | Bridge abutments, retaining wall and highway barriers |
|
| Texas – Houston (2006) | Bridge columns |
|
| Texas – New Braunfels (2010) | Precast beams (not in service and with no significant ASR) |
|
| Vermont (2010) | Bridge barriers |
|
| Field site (date treated) | Elements treated | Technologies evaluated |
|---|---|---|
| Alabama (2010) | Concrete arches on a bridge (above the roadway) | System incorporating 40% water-based silane, crack-filling caulk and epoxy flood coat on top surface |
| Arkansas (2012) | Concrete pavement | 100% silane 40% water-based silane |
| Delaware (2009) | Concrete pavement | Topical lithium application |
| Maine (2010) | Bridge abutments, wing walls and bridge columns | 100% silane 40% water-based silane Elastomeric coating Electrochemical lithium treatment Carbon FRP wrap |
| Massachusetts (2005 and 2010) | Highway barriers | Topical lithium application Vacuum impregnation with lithium 40% silane in isopropyl alcohol 20% silane in isopropyl alcohol 20% silane in water Lithium silicate-based penetrating sealer Elastomeric coating |
| Rhode Island (2012) | Bridge abutments, retaining wall and highway barriers | 100% silane 40% water-based silane Elastomeric coating |
| Texas – Houston (2006) | Bridge columns | Vacuum impregnation with lithium Electrochemical lithium treatment 40% silane in isopropyl alcohol Silane–siloxane blend, applied by way of vacuum impregnation Sodium silicate, applied by way of vacuum impregnation |
| Texas – New Braunfels (2010) | Precast beams (not in service and with no significant ASR) | 40% alcohol-based silane |
| Vermont (2010) | Bridge barriers | 100% silane 40% water-based silane Alcohol-based silane (40% solid; used by local contractor) Elastomeric coating |
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