Welcome to the Word of Nondestructive Testing
Looking to learn more about nondestructive and innovative testing
(ND&IT) for concrete? A new workshop developed by the Federal
Highway Administration (FHWA) provides a comprehensive review of the
latest ND&IT for concrete in highway applications. The workshop
places particular emphasis on in-place measurement of early-age properties
of concrete.
A pilot workshop will be hosted by the Maryland State Highway Administration
on April 9-11, 2002, with additional workshops to follow across the
country. The workshop will cover:
Participants will have the opportunity to gain hands-on experience
with some of the testing equipment covered, such as the Concrete Thickness
Gauge and equipment for measuring pulse velocity, maturity, and tensile
bond strength. The workshop will also include demonstrations of other
testing equipment, such as the Air Void Analyzer and technology for
performing the impact-echo test and spectral analysis of surface waves.
Nondestructive testing has the advantages of measuring in-place properties
of the concrete and providing rapid results, while causing minimal
damage to the concrete. NDT is also cost-effective and permits more
testing to be done than if conventional methods were used. These testing
techniques are becoming increasingly important as the pavement industry
moves toward using performance-related specifications, warranties,
high-performance concrete, and extended life pavements.
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This Maturity Meter is measuring the pavement's
compressive and flexural strength.
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This picture shows the impact-echo test
being performed.
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This core sample was taken from a distressed
pavement.
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Shown
here is the Air Void Analyzer.
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For more information on the workshop, contact Gary Crawford at FHWA,
202-366-1286 (fax: 202-493-2070; email: gary.crawford@fhwa.dot.gov).
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Articles in this issue:
Pavement Preservation Forum II: Investing in
the Future
A New and Improved High-Performance
Concrete
Welcome to the Word of Nondestructive Testing
Fulfilling the LTPP Promise
Highway Technology Calendar
FHWCA Announces New Source of Bridge Preservation
Funding
