Pyrite & Subsidence
IGSL has extensive experience in detecting pyrite and gypsum in underfloor aggregate material. Where structural damage indicates possible pyrite degradation, analysis is carried out in a coherent and structured manner. We provide comprehensive geotechnical reports on suspected pyrite and expansion. Our reports evaluate all of the physical, chemical, petrographic and XRD information obtained.
Acceptance testing to determine the geochemical and geotechnical properties of aggregate is routinely carried out for civil and building contractors and quarry suppliers. Analysis for pyrite and gypsum includes the following suite of tests:
- Liquid Limit
- Particle Size Distribution
- Water Absorption
- Water Soluble Sulphate
- Acid Soluble Sulphate
- Total Sulphur
- pH
- Calcium Carbonate
- Thin Section Petrographic analysis
- X-Ray Diffraction (XRD)
- Scanning Electron Microscope (SEM)
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Our team of highly experienced engineering geologists and geoscientists analyse aggregate samples using thin section, X-Ray diffraction (XRD) and scanning electron microscope (SEM) techniques.
Our geotechnical reports provide a comprehensive assessment of the test data and includes an evaluation of the potential for pyrite degradation and expansion.