Description
Dukes Sandstone is a medium grained stone, pink to lilac, light cream, buff, dark brown variations in colour with iron, black and buff veined bed markings.
Finishes available:Sawn Cut, Sanded, Rockfaced, Sandblasted, Bushhammered, Tumbled, Thermalled, Natural Cleft, Weatheredge
Dukes Sandstone can be commonly used; Exterior - Interior wall and floor applications, fountains, pool and wall capping, stairs, paving.
Test Results of Dukes Gritstone
Safety in Use
Slip Resistance (Note 1)
Not determined
Values > 40 are considered safe.
Abrasion Resistance (Note 1)
Not determined
Values <23.0 are considered suitable for use in heavily trafficked areas
Strength under load
1) Compression(Note 2)
74.9 MPa
Loaded perpendicular to the bedding plane ambient humidity
1) Compression(Note 5)
39 – 50 MPa
Dry. Loaded perpendicular to the bedding
2) Bending (Note 1)
8.7 MPa
Loaded perpendicular to the bedding plane ambient humidity
4.8 MPa
Loaded parallel to the bedding plane ambient humidity
Porosity and Water Absorption
1) Porosity (Note 3)
14.11%
2) Saturation Coefficient (Note 3)
0.67
3) Water Absorption
4.18 % (by wt)
4) Bulk specific gravity
2269 kg/m3
Resistance to Frost
Freeze/Thaw Test (Note 1)
Not determined
Resistance to Salt
Sodium Sulphate Crystallisation Test (Note 3)
3.13% Mean wt loss
Resistance to Acidity
Acid Immersion Test(Note 4)
Pass
All samples passed the test with no splitting or delamination