Rockdall Production - Enamelled Lava


	Specification Sheet

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Result of the tests effectuated on the enamelled lava

1	The sound velocity of propagation (NFB 10.505)		2585m/s
	(Average obtained after a series of 8 tests effectuated on shiny white enamelled tiles and on dull white tiles)
2	Abrasion wearing-away (NFP 61.551) PEI test
	-	White tiles (both shiny and dull)	U.3.	4^th category
	-	Grey tiles	U.2.3.	3^rd category
			U.1.	1^st category
3	Acid, base and stain-resistance (UPEC)
	-	Peanut oil: white, grey and black tiles	Valuation 2
	-	Black polish: on black and grey tiles - Black tile	Valuation 1 Valuation 2
	-	Citric acid: on white, grey and black tiles	Valuation 3
	-	Potassium hydroxide: on white, grey and black tiles	Valuation 3
4	Frost resistance non-freezing material


Colour chart	Earthenwearing	Enamelling kiln

Results of the tests effectuated on tiles of polished lava

1	Density (Kg/m3)			2 290 Kg/m3
2	Porosity (%)			18,49 %
3	Compression resistance (MPa)			47,97 MPa
4	Flexion resistance (N/mm2)			12,20 N/mm2
5	Measuring of the sound velocity (NBF 10,505)			3 286,00 m/s
6	Continuity index (NPF 18,556)			55%
7	Wearing-away
	a-	NBF standards 10,508		55%
	b-	NFP standards 61,302 (UPEC)		34 mm (classification U4)
8	Acid and base resistance
	-	Peanuts oil		Valuation I
	-	Black polish		Valuation II
	-	Hydrochloric acid		Valuation II
	-	Potassium hydroxide		Valuation II
9	Frost resistance			non-freezing material
10	Speeded-up ageing: in accordance with the NFT 30.049 standards, excluding the complementary test in SO2 atmosphere.
11	Chemical test
	-	Silicon Si O2	73,74%
	-	Alumina Al2O3	12,42%
	-	Iron Oxide Fe2O3	0,90%
	-	Sodium Oxide Na 2O	3,99%
	-	Potassium Oxide	4,70%
	-	Lime CaO	0,80%

Contact us

© Rockdall Production
Workshop and exhibition hall
Rue de la Rochelle
63 370 LEMPDES
Tel.: +33 (0)4 73 83 60 60
Fax: +33 (0)4 73 61 96 73