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Industrial Slab GPR Survey: Heterogeneous Reinforcement and Subgrade, Inputs for Bearing Capacity Assessment

Industrial Slab GPR Survey: Heterogeneous Reinforcement and Subgrade, Inputs for Bearing Capacity Assessment

Description

Profile recorded on a factory floor with a GSSI UtilityScan DF dual-frequency 300/800 MHz antenna, ahead of new works. No records exist, no destructive testing is possible: yet one needs to know what will be built on.

GPR does not calculate bearing capacity, but it reveals what makes it vary. Here, two heterogeneities stand out.

The reinforcement is not uniform. At 800 MHz, the density and regularity of the bars change along the profile. A slab with varying reinforcement does not resist point loads — machinery, racking legs — uniformly, and such variations often betray successive repairs or extensions.

Nor is the subgrade. At 300 MHz, the response of the support changes from one zone to another, suggesting differences in compaction. A hypothesis to be confirmed: this is precisely what testing must check.

The slab-subgrade interface shows little contrast on this profile, and thickness is not easily readable. What matters here is not an absolute measurement but mapping the zones where a uniform design assumption would be wrong — so that plate load or penetrometer tests go there, rather than on an arbitrary grid.

No ground truth: this is the real condition of a preliminary survey. The exercise is to rank anomalies by confidence level and propose a targeted testing programme.

Raw unprocessed files.

capacité portante, bearing capacity, dalle industrielle, industrial slab, sol industriel, industrial floor, ferraillage hétérogène, heterogeneous reinforcement, densité d'armatures, reinforcement density, reprises de coulage, repairs, extensions, sol support hétérogène, heterogeneous subgrade, compactage, compaction, zones mal compactées, poorly compacted zones, module de réaction, modulus of subgrade reaction, charges ponctuelles, point loads, reconnaissance géotechnique, geotechnical investigation, essai à la plaque, plate load test, pénétromètre, penetrometer, programme d'essais, testing programme, niveau de confiance, confidence level, état des lieux, baseline survey, avant travaux, pre-works survey, sans plan, no as-built records, UtilityScan DF, 300 MHz, 800 MHz

Information

ApplicationGeotechnics, Concrete / Civil Eng., Underground Utilities
GSSI antennaUtilityScan DF
Frequency300/800 MHz
FormatDZT
Size16,3 MB
Files1
Channels2
GPS filesNot available
ContributorMDSLab
Added on2026-09-21
Ground truth Not verified

Cite this dataset

APA

MDS - Le Matériel de Sondage - GPRbase (2026). Industrial Slab GPR Survey: Heterogeneous Reinforcement and Subgrade, Inputs for Bearing Capacity Assessment [Data set]. GPRbase. GSSI, UtilityScan DF, 300/800 MHz. https://www.gprbase.com/en/dataset/ds035-industrial-slab-gpr-survey-heterogeneous-reinforcement-and/

BibTeX

@misc{gprbase_ds035,
  author       = {MDS - Le Matériel de Sondage - GPRbase},
  title        = {Industrial Slab GPR Survey: Heterogeneous Reinforcement and Subgrade, Inputs for Bearing Capacity Assessment},
  year         = {2026},
  publisher    = {GPRbase},
  howpublished = {\url{https://www.gprbase.com/en/dataset/ds035-industrial-slab-gpr-survey-heterogeneous-reinforcement-and/}},
  note         = {GSSI, UtilityScan DF, 300/800 MHz. Licensed under CC BY-NC-SA 4.0},
}

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