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GraniteKerbstoneCurbstone

Curbstone material characteristics on six characteristics interpretation and qualified index

Curbstone material characteristics on six characteristics interpretation and qualified index
Qualified granite slab, should achieve four physical performance indicators
Bulk density ≧ 2.56 g/cm3
Bibulous rate is ≦ 0.60%
Dry degree of compression (resistance) ≧ 100 mpa
The bending degree (buckling resistance) ≧ 8.0 MPa
Qualified marble slab, should achieve four physical performance indicators
Bulk density ≧ 2.60 g/cm3
Bibulous rate is ≦ 0.5%
Dry degree of compression (resistance) ≧ fifty mpa
The bending degree (buckling resistance) ≧ 7.0 MPa
What is compression strength, resistance of curbstone material?
Compressive strength is refers to the rock in the unidirectional compression case resistance ability damage.

The size of the compressive strength of the rock said hard degree.
Compression strength with MPa said, 1 MPa = 10.2 kg/c ㎡ (KGF/cm2)
A standard atmospheric pressure = 760 MMHG = 76 cm mercury column = 1.013 x 105 PASCAL = 10.336 meters water

column.
In order to ensure standard atmosphere is a constant value, in 1954 the tenth international measurement

assembly resolution statement, regulation standard atmospheric pressure value is 1 standard atmosphere = 101325

Newton/m 2
Press the "JC205-92 natural granite building plank" standard, dry compression strength not less than 60.0 MPa.
Press the "JC79-92 natural marble building plank" standard, marble dry compression strength not less than 20.0

MPa.
Generally speaking granite compression strength in the 110-245 mpa between, marble compression strength in

between 70 ~ 110 mpa
What is the bending strength, curbstone buckling resistance?
Bending strength before is equivalent to the "bending capacity, refers to a certain specifications of facing

plank in two point on the ability of resistance to fracture.
curbstone bending strength than the compressive strength is low, the test is about 1/14 ~ 1/8 of compression

strength. General draw compression strength can be roughly speculated that the bending strength. General

bending strength, the plate is not easy to fracture.
Press the "JC205-92 natural granite building plank" standard, bending strength not less than 8.0 MPa, press

"JC79-92 natural marble building plank" standard, the bending strength is not less than 7 MPa
Such as granite CenXiGong bending strength is 23.56 MPa, marble dandong green bending strength is 8.57 MPa.
What is the curbstone volume density and bibulous rate?
Volume density of curbstone material quality and the ratio of volume. The proportion of rock density said, let

major, in saw, grinding, polishing, cutting and processing in the process to have higher stability.
Water absorption rate is refers to the curbstone water absorbing capacity, reflecting the curbstone material

contained within the pore number, size and distribution and connected situation.
Rock bibulous rate is generally < 1.5%, < 0.5% can be regarded as resistance to weathering performance is good,

frost resistance or don't do frost resistance test.
What is the gloss?
Gloss is evaluation facing curbstone quality one of the important contents of, in addition to the design and

color and variety, it is the user to measure the quality of curbstone material according to the.
Press the "JC79-92 natural marble building plank" standard, marble mirror plate according to the chemical

principal component is different, glossiness minimum requirements (product) are not less than 70 and, and

luster unit.
Press the "JC205-92 natural granite building plank", glossiness minimum requirements shall not be less than 75

gloss unit.
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