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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
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
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
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
Press the "JC205-92 natural granite building plank", glossiness minimum requirements shall not be less than 75
Natural Curbstone material characteristics and advantage analysis
Curbstone is a kind of high-grade building decoration materials, mainly is the adornment effect, Curbstone material is the earliest human
development history of building materials, there are tens of thousands of years of history, because of its natural beauty, decorated with
human of indoor and outdoor environment, in the ancient and modern, Chinese and foreign construction
History has left a lot of Curbstone building work.
1. The fire resistance
All kinds of Curbstone material is different, some Curbstone in high temperature, under the action of chemical decomposition happened.
(1) gypsum: more than 107 C in the decomposition.
(2) the limeCurbstone, marble: more than 910 c in the decomposition.
(3) granite: in 600 C due to uneven heating of mineral and crack.
2. Frost resistance
To degrees below zero and in frozen, internal pore water expansion than original volume big 1/10, rock if can't resist this expansion force
of what had happened, they will be failure. A prajna bibulous rate is less than 0.5%, they did not consider the frost resistance
3. Expansion and contraction
Curbstone material is also heat bilges cold shrink, but if heated after cooling, the contraction can't reply to the original volume, and will
keep part of the permanent inflation; The United States Arsenal have test by 00 c to 1000 c, then to 00 c, measure permanent expansion
0.02 - O. 045%.
4. Compressive strength
Of Curbstone material compressive strength due to mineral composition, crystalline degree of finish, the uniformity of cementing material,
load area, load effect and cleavage to factors such as the Angle, and different. If other conditions are the same, usually crystal grain size
is very fine and each other a bond
The density of the material, with high strength. Dense volcanic rocks in the dry and saturated moisture content, compressive strength and no
difference (bibulous rate is very low), if is porous and afraid of water, and the dry cement rock and damp the strength, there is significant
Building decorative Curbstone material is natural Curbstone and artificial Curbstone two categories, and natural Curbstone material is given
priority to, it is a kind of advanced decorative materials, mainly used for adornment grade demanding engineering, artificial Curbstone
belongs to low grades of decoration materials, only in the medium and low grade of interior decoration engineering.
The so-called marble is refers to the deposit or bad carbonate rock, marble, dolomite, limestone, sandstone, shale and SLATE, etc. As China's
famous white marble is Beijing fang shan magmatic produce of dolomite, yunnan marble is produced in large
In the marble, the famous dandong green is serpentine change silicon card rock. Also, as a Curbstone production all kinds of magmatic rock,
such as granite, andesite, diabase, green long rock and gneiss etc called granite. Such as Beijing white tiger gorge white flowers
The Curbstone is granite, jinan blue is gabbro, and Qingdao black granite is diabase.
Artificial Curbstone is a kind of synthetic decoration materials. According to the binder is different, can be divided into organic kind of
artificial Curbstone and inorganic kind of artificial Curbstone two kinds. According to the production process of a different process, and
can be divided into polyester type artificial marble, composite
Type artificial marble, silicic acid salt type artificial marble, sintering type artificial marble four types.
Marble is a little blue, also called BingNa G654. The little blue for the pingnan road development under a development of the new Curbstone
products in small sapphire Curbstone with small blue SPAR point is also called "blue star light". And because like import "rime ice flowers",
so it is the domestic "rime ice flowers" reputation. Mainly used for exterior wall, mesa, outdoor plaza (fire board). Is a building
decoration market four kinds of artificial decoration materials, organic class (polyester), the most common thing science, chemical
properties are the best.
What's the kerbstone-curbstone
Kerbstone,another name is cubstone.Mainly used in road border or edge.
China is main expor country of kerbstone and curbstone.In Shandong province of China,export G341,G343,G382 etc
standard stone.Grey is main color with black and red point.There are lots of finishes and surfaces,such as
polished,flamed,bush-hammered,sawn.Workers hit the granite stone with hammered,and stone machine sawn the huge
Yantai and Qingdao port is main load port.
Different kinds of kerbstone-curbstone according with EN-1343: RV,RF,GV,GF,A,B,V22,R17,V17,R15...
These standard are fit for EU.
There are various materials and colors,for example, grey/red/white/black granite,and the kerbstone and
cubstone's Physical characteristics of the material is folowing:
1). Natural density: 2.67+/- 0.02 T/m3
2) Water absorption: 0.22%
3) Dry compressive strength: 208+/ 6 N/mm2
4) Across vein tensile: 12.7 +/- 0.6 N/mm2
1)Available in European,especiallly North Europe styles
2)Made with materials originating from North China and our quarry is located in Yantai in Shandong province.
3)We also according to our clients ' designs for completion.
4)Surface finish:polished,flamed,bush-hammered,split,sawn,pine-appled,honed and so on.
5)Various products available:
pavingstone,kerbstone,limestone,cubestone,cobble stone,steps,wallstone, granite entrance, block stair
step,boarders,stone column and many carving or garden landscaping, just like stone postbox or birdbath,etc.
6)Good quality with very competitive price.
7)Package:Strong wooden pallets
Lerostone--One Natural granite stone exporter.
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