2- Retrieval and characterization of materials used in prototype 1

Asbestos indicate fibrous silicates of the serpentine and amphibole groups. The most widespread asbestos are: Chrysotile, Crocidolite*, the blue amphibole, Amosite* or brown amphibole, and Tremolite.

*: commercial names of the mineral series Glaucophane-Riebeckite and Cummingtonite-Grunerite with fibrous habit.

 

All characterisation analyses on the ACW to be addressed to SHS tests with Protoype 1 were carried out. The analyses were done by XR powder diffractometry, a technique appropriate to identify minerals in a crystalline mixture, associated with the SEM-EDS technique, that provides information on the habit and on the in-situ composition of the mineral phases according to the D.M.6/9/94.

 

This allowed characterising the starting material for future comparison with the same, after combustion with the SHS technique.

 

In Figure 1, the XRD spectrum of Fibre-cement.

 

Quartz, Chrysotile, Crocidolite, Calcite are the sample-forming minerals.

 

We characterized 50 samples with XRD and SEM analyses before SHS.

 

 

The action was closed at January 2014