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Sonic Test of Cast-in-place Concrete Piles |
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The sonic
test system is widely used for quality control and
evaluation of concrete structures. The method is
an ultrasonic test that involves measuring the propagation
time of ultrasonic signals between two probes in
the piles.
The velocity of the wave incorporates all the concrete
conditions between the probes. When a sound wave
travels between two transducers it travels in straight
line through solid material, the transit time is
the lowest while amplitude is the largest.
When cracks exit, the sound wave travels around
the crack. Thus, transit time is larger and the
amplitude is smaller. Vertical tubes are attached
to the reinforcing cage of the pile. To optimize
the results four tubes were placed in each pile.
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Sonic
Test용 Tube설치
Instsllation of Tube for Sonic test
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콘크리트
타설 후 Tube절단
Tube Cutting after Casting
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Sonic
Test전경
View of Performing Sonic Test
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