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Blue Perl
Origin: Norway
Block sizes: Normal dimensions - no big blocks
Colour uniformity: Excellent
Availability: Good
Material used for: interior exterior
Polishing treatment: xcellent
Other surface's treatments: Difficult but possible
General comments: Classical material for special jobs. But even for medium/big jobs. Even if colour's uniformity is excellent, the process needs special care regarding the direction/change of colour.
Examples of tests' results:
1. Compressive strength 1959/2520 Kg/sq.cm.
2. Ditto after gelivity 1655/2286 Kg/sq.cm.
3. Water absorption 0.035%
4. Ultimate tensil strength 193/207 Kg/sq.cm.
5. Impact test-min.fall height 45 cm.
6. Coef. thermal expans 10.45
7. Abrasion coefficient ---
8. Bulk density 2730 Kg/m3.
9. Elasticity module 752000 Kg/sq.cm.
10. Knoop microhardness ---
11. Flexural strength ---
12. Porosity ---
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