Slurry Infiltrated Mat Concrete (SIMCON) for Rehabilitation of Bridges and Pavements

Slurry infiltrated mat concrete (SIMCON) has recently emerged as a high performance steel fiber cementitious composite. Flexural strength, ductility and toughness of SIMCON were found to be superior to conventional steel fiber concrete. This paper discusses the potential advantages of SIMCON in repair applications. Mechanical properties including tensile stress-strain behavior and flexural load deflection relation are reviewed. Investigation of the interfacial bond strength of SIMCON overlay and concrete substrate is focused in this project. To assess bond between plain concrete substrate and SIMCON, the effect of shear nails and latex was studied. Air permeability of SIMCON was also studied via nondestructive testing.