Olson - Impact Echo Scanning (IES) System Brochure

Impact Echo Scanning (IES) investigations are performed on large structural members with smooth concrete where shallow voids, honeycomb, cracking or delaminations are of primary concern. The Impact Echo Scanning (IES) system is designed for large area investigations of shallow voids, debonding/delamination, cracking, or honeycomb often found between an overlay on a bridge deck or surrounding dense rebar mats. IES is commonly used to evaluate post-tensioning (PT) cables used in reinforcing various structures and determining duct grout condition. The scanning technology allows tracing of ungrouted PT cables through slabs and beams. An advantage of the IES method is that only one side of the structure needs to be accessible for testing.