Impact-Echo: Applications and
Case Studies
Impact-Echo Instruments, LLC
P.O. Box 3871
Ithaca, NY 14852-3871
Phone (Sales Director Bill Weber) +1-607-738-1547
Fax: 607-533-7667*2
e-mail:
weber@impact-echo.com
When properly used, the impact-echo method has achieved unparalleled success in locating flaws and defects in highway pavements, bridges, buildings, tunnels, dams, piers, sea walls and many other types of structures. It can also be used to measure the thickness of concrete slabs (pavements, floors, walls, etc.) with an accuracy of 3 percent or better.
Click Here for testimonials from engineers who have used our equipment.
Impact-echo is not a "black-box" system that can perform blind tests on concrete and masonry structures and always tell what is inside. The method is used most successfully to identify and quantify suspected problems within a structure, in quality control applications (such as measuring the thickness of highway pavements) and in preventive maintenance programs (such as routine evaluation of bridge decks to detect delaminations). In each of these situations, impact-echo testing has a focused objective, such as locating cracks, voids or delaminations, determining the thickness of concrete slabs or checking a post-tensioned structure for voids in the grouted tendon ducts.
Experience has shown that an understanding of the physical principles of the impact-echo method and information about the structure being tested are both necessary for successful field work.
Case Studies. Click on the links below to see details of case studies.
Case Study 1: Cracking in Deck of Reinforced Concrete Railway Bridge, Denmark.
Case Study 2: Testing the Integrity of Tunnel Walls in the Los Angeles County Subway System, California.
Click on the following link to view technology assessment by the Federal Highway Administration
http://www.fhwa.dot.gov/winter/roadsvr/CS023.htmCase Study 3: Measuring Thickness of Concrete Pavement in New Highway Test Section, Arizona.
Case Study 4: Locating Voids in Grouted Tendon Ducts of a Post-Tensioned Highway Bridge, Northeastern USA.
Case Study 5: Identifying Weakened Panels in a 7.5-mile Concrete Seawall at Marina Del Rey, Los Angeles, California.
Case Study 6: Impact-Echo Replaces Coring for Routine Testing and Evaluation of Concrete Pavements, South Dakota.
Click on the following link to view technology assessment by the Federal Highway Administration (FHWA)
http://www.fhwa.dot.gov/winter/roadsvr/CS048.htmCase Study 7: Delaminations in Concrete Bridge Deck with Asphalt Overlay, New York State, USA.
Case Study 8: Cracking in Beams and Columns of Parking Garage, New York State.
Case Study 9: Locating Hidden Headers Behind Masonry Facade of 13-Story Building, New York City.
Click Here to Send Questions, Comments, or Requests for Price Quotations to:
William Weber, VP for Sales
Impact-Echo Instruments, LLC
P.O. Box 3871
Ithaca, NY 14852-3871
Phone: 607-738-1547
Fax: 607-533-7667*2
e-mail: weber@impact-echo.com