Construction and construction material testing in Illinois by Testing Service Corporation is provided for construction and environmental projects. Among the services we provide are: testing of bituminous paving mixtures including batch plant inspection, field laydown observation and in-place nuclear density measurements; portland cement concrete testing, including core sampling and rebound hammer testing, rebar location, and reinforcing steel placement. TSC's construction testing in Illinois also encompasses construction evaluation of mortar, flexural bond strength. Welding inspection by ultrasonic, magnetic particle, dye penetrant and visual procedures round out TSC's construction testing services in Northern and Central Illinois.

TSC was organized in 1954 as an Indiana corporation and has operated in the Greater Chicago area since 1956. Corporate headquarters are located in Carol Stream, Illinois. Since its founding, TSC has completed 67,000 projects with most of them being in North and Central Illinois.