black galaxy granite, Black Granite Tombstone, absolute black granite, chamrajanagar black granite, new imperial red granite, Natural Stone
black galaxy granite, Black Granite Tombstone, absolute black granite, chamrajanagar black granite, new imperial red granite, Natural Stone
Kandla Grey Sandstone Paving
Kandla Grey sandstone paving is made up of shades of blues and greys. Suited to traditional and contemporary landscape designs Kandla Grey sandstone paving is a hard wearing natural stone which requires minimal maintenance.
Options Available Sizes:
900 × 600 × 25mm
600 × 600 × 25mm
600 × 290 × 25mm
290 × 290 × 25mm
Project Packs (equal mix of all 4 sizes)
Edge Profile: |
Handcut |
Surface Finish: |
Riven |
Suitable for: |
Pier Caps, Coping Stones, Steps, Terraces, Pool Surrounds, Paths, Patios, Driveways |
Cutting Tolerance: |
+/- 5mm |
Split Packs: |
Available |
Also Available In: |
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SANDSTONE -Specifications
Physically, they are very Hard, Compact, Fine grained, equi-granular homogeneous rocks of sedimentary nature (Sandstone) & metamorphic nature (Quartzite).
Color: |
Minor color tonal variations exist but within the tolerance limit. |
Hardness: |
6.5 to 7 on Moh's Scale |
Density: |
2.3 to 2.4 Kg/cm3 |
Compressive Strength: |
90 to 140 N/mm2 |
Modulus of Rupture: |
16-40 N/mm2 |
Water Absorption: |
1.0 - 1.2 % |
Porosity: |
Low to very low |
Weather Impact: |
Resistant |
Chemically, they are very resistant Mono-Mineralic rocks, principally composed of silica. The other minor constituents vary from origin to origin
SiO2: |
95-97% |
Iron (Fe2O3): |
0.5%-1.5% |
Alumina (Al2O3): |
1 to 1.5% |
Soda (Na2O) & Potash (Kro): |
Less then 1% |
Lime (CaO): |
Less then 0.5% |
Magnesia (MgO): |
Less then 0.5% |
Loss On Ignition (LOI): |
Less then 0.5% |