CEBTP - Historical overview of void detection by the pulse method

Historical overview of void detection by the pulse method

In 1982, the Jean PAQUET's team at CEBTP adapted the impedance method to void detection under pavings.
Problems under the pavement of an airport aroused the first efforts to develop this method.
The first trials of which took place on a paving at Longjumeau, in the suburbs of Paris.

1986 : An equipment called AIDA (or TDR) was installed on a carriage, it is meant to control large surfaces such as the pavings of airport runways. This equipment was comprised of a system ensuring the automatic setting of three geophones, and of a system triggering the strikes of three hammers.

1989 : CEBTP manufactures two specific equipments called MIMP 14, in order to control the injection of concrete to behind the voussoirs of the English Channel.

1994 : A software called MIMPSTOE was created, which allowed to operate the method with a MIMP 15 material. This acquisition software allowed two operators to get as many as 1000 acquisitions a day.

1998 : The new MIMP 16 is issued, with its specific acquisition software, which allows one to get as many as 3000 acquisitions a day.

The IMPR02 data processing software, under windows 95 or 98, enables you to highlight the results by plotting 2 - or 3 - dimensional mappings.

Frédéric Bourdet, 1998

The Material Department of CEBTP

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