ragedriven
Geotechnical
- May 9, 2008
- 5
whats a good scope for re-testing? the insurance company wants to keep the slab, the initial testing company said no way. We are the 2nd opinion.
An industrial sized warehouse burned, the slab on grade quality is in question. In general it can remove the water content, cause surface spall, it can release concrete/aggregate bonds, ect.
The initial testing scope involved many swiss hammer and 6 cores (limited on purpose). The spec required is 3k, 2/6 cores passed, 4/6 cores failed (40-50%). Test engineer said destroy the slab, but would permit delineating failing sections if economical.
looked through these...
thread590-75263
thread590-108730
thread590-176975
i wouldn't trust a swiss hammer as far as i could throw it, maybe as a measure of uniformity, but not for actual compression correlations. what insitu testing should i perform in addition to the destructive coring/breaking?
windsor probe? more swiss? break off? ultra sonic?
An industrial sized warehouse burned, the slab on grade quality is in question. In general it can remove the water content, cause surface spall, it can release concrete/aggregate bonds, ect.
The initial testing scope involved many swiss hammer and 6 cores (limited on purpose). The spec required is 3k, 2/6 cores passed, 4/6 cores failed (40-50%). Test engineer said destroy the slab, but would permit delineating failing sections if economical.
looked through these...
thread590-75263
thread590-108730
thread590-176975
i wouldn't trust a swiss hammer as far as i could throw it, maybe as a measure of uniformity, but not for actual compression correlations. what insitu testing should i perform in addition to the destructive coring/breaking?
windsor probe? more swiss? break off? ultra sonic?