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Method and apparatus for detecting tendon failures within prestressed concrete

  • US 6,119,526 A
  • Filed: 07/15/1998
  • Issued: 09/19/2000
  • Est. Priority Date: 05/29/1997
  • Status: Expired due to Fees
First Claim
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1. A nondestructive detection apparatus for detecting failures within a length of tendon in a reinforced concrete slab, the detection apparatus comprising:

  • a vehicle adapted to be moved along the concrete slab;

    a main sensing mechanism connected to the vehicle for taking readings of the tendon as the vehicle is moved along the concrete slab;

    a distance instrument connected to the vehicle for measuring a distance traversed by the vehicle as the vehicle is moved along the concrete slab;

    a controller that interfaces with the main sensing mechanism and the distance instrument, the controller being constructed and arranged to sample the readings as the vehicle is moved along the slab; and

    a lead sensing arrangement positioned ahead of the main sensing mechanism for generating data representative of a lateral position of the tendon.

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