Kerbstone Manufacturer | Anthracite Granite Kerbstone with the best price!
Granite is an igneous rock formed by slow cooling of deep-sea magmas. It is underlined by extended durability to extreme weather and freeze-thaw cycles, corrosion resistance and long-term endurance in heavy traffic conditions. Bianco Sardo granite kerbstones with 10 x 15 x 50 cm size are highlighted by a perfect edge processing (bevelled 1L) and durability, with recommended usages including roadway kerbstone plus kerbstone for walkways and streets.
Granite Kerbstone can be used to define the access roads (backyard kerbstone and exterior paving kerbstone)
- creating a barrier between vehicles and pedestrians, including for heavy traffic areas (squares)
- separation lines for tombstones
- define parking spaces
- landscaping projects in backyards and storage areas
Technical features Bianco Sardo Granite:
- density: 2 688 kg/m³
- hardness (Mohs scale): 7
- water absorption (normal conditions): 0.3%
- mechanical strength (compression): 135 MPa
- mechanical strength (bending): 18 MPa
- abrasion resistance: high
- fire rating: class A1 (non-flammable)
The premium quality of our kerbstone has one essential feature, which is also a key differentiator – the state-of-the-art production technology, used for manufacturing custom-size kerbstones and edge processing. Standard size kerbstones (granite, marble, andesite, etc.) include: 10 x 15 x 50 cm and 25 x 20 x 50 cm.
Bianco Sardo Granite Kerbstone 10x15x50 are highlighted by perfect edge processing (bevelled 1L) and durability, the products being recommended as roadway kerbstone plus kerbstone for walkways and streets.
Everything you need to know about how to install back yard kerbstone/exterior paving kerbstone: Stone kerbstones (granite, marble, travertine, andesite, etc.) are laid out on a concrete underlay (semi dry screed) with gravel support. Just follow some easy steps:
1. preliminary preparation: double check the areas before digging, because you want to avoid any damage to the utility routes
2. surface cleaning: remove any plant debris, stones or tree trunks
3. soil excavation: dig a trench of about 25 cm deep
4. laying out the gravel: lay out approx. 10 cm of gravel (crushed stone), then compact it by hand or with a vibratory plate compactor.
5. cast-in-place concrete: approximately 10 cm concrete layer
6. laying the kerbstone: on fresh concrete, up to a depth of 5 cm, then adjusted to line and level with fresh concrete.
Installation over a gravel bed – not recommended for kerbstones below 20 cm height
Preliminary calculations:
How to calculate the necessary kerbstone for a backyard alley with given size
For determining the needed figure, take the given length and divide it by the kerbstone length.
E.g.: for defining a 15 m (1 500 cm) long driveway, you will need 1500: 50 = 30 Bianco Sardo kerbstones, with 10x15x50 cm size.
How to calculate the necessary gravel to be laid out in the ditch:
Calculate the necessary volume, as follows V = L x l x h, in which:
L = trench length (15 m, in our example)
l = trench width, for estimation consider the size of a manual compactor (approximately 20 cm), but we consider 25 cm because one should be able to penetrate the trench with the compactor
h = the height of the gravel layer for this type of kerbstone, according to step 4 from the installation procedure (10 cm)
Expressed in meters (m), in our example we have:
V = 15 x 0.25 x 0.1 = 0.375 m³
calculate the necessary gravel with the standard density formula (e. g. gravel 7-16 mm, with ρ = 1550 kg/m³)
ρ = m/V => m = ρ x V, in figures
m = 1550 x 0.37 = 581 Kg gravel, with 7-16 mm grain size
For a custom offer, get in touch with our sales consultants. We are committed to provide top quality products at fair prices and reliable services for your projects.
Choose exterior paving and granite kerbstone from Bianco Sardo Granite for decoration projects that last a lifetime!
