Dong Fang Bai -Big Board

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Honors Cases

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Oriental White Marble Physical and Chemical Inspection Data Sheet
Test items	unit of measurement	Standard technical indicatorsJC/T 202-2001	Inspection data	Meet the standard
Bulk density	g/cm3	not less than2.6	2.72	achieve
Water absorption	%	no greater than0.75	0.14	exceed
Bending strength	MPa	not less than7.0	19.9	exceed
Dry compression strength	MPa	not less than20.0	108.9	exceed
Gloss	degree	90(excellent)	100.7	exceed
SiO2	%		0.17
AL2O3	%		0.06
CaO	%		54.25
MgO	%		1.5
TiO2	%		0.008
Loss on ignition	%		43.62
Radium equivalent concentration	Bq/kg	Class A≦350	16	Class A products
Oriental white marble radioactive element test form
sampling	Total intensity (count)	Uranium content(10-6)	Thorium content(10-6)	Potassium content(%)
Background	13310	0.1	1.1	1.02
sample	13926	0.1	1.2	1.04
Measurement Results of Radiation Exposure Rate of Oriental White Marble
Measurement items	Measurement conditions	Exposure rate (u R/h) mean ± standard deviation	in conclusion
Oriental white marble	0.5 meters high from the brick surface	10.57±0.4	Can be directly used for indoor and outdoor decoration of various buildings