International Concrete Abstracts Portal

The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.

  


Title: Voids Beneath Slabs-on-Ground

Author(s): Hal Amick, Blong Xiong, Ning Tang, and Michael Gendreau

Publication: Concrete International

Volume: 31

Issue: 7

Appears on pages(s): 29-33

Keywords: impulse-response test; nondestructive testing; slab-on-ground; vibration

DOI:

Date: 7/1/2009

Abstract:
Concrete slabs-on-ground are popular for research facilities because they don’t exhibit the resonance characteristics of suspended slabs. Occasionally, a slab-on-ground separates from the subgrade, leaving a void that allows the floor to behave more like a suspended slab and may lead to cracking. To detect these voids, determine their horizontal extent, and verify that corrective actions have been successful, the frequency-dependent response of the slab to an impact load can be measure using impulse-response testing. The results of one such study, with measurements before and after remediation by grout injection, are presented.




  

Edit Module Settings to define Page Content Reviewer