White - Limestone
United Kingdom
Item Details
Quarry Location:
Bowers Quarry, Portland, Dorset
Water Absorption:
5.99 %
Density:
2205 kg/m³
Flexural Strength:
3.94 Mpa
Compressive Strength:
44.24 Mpa
Recommended Usage:
Ornamental stone, interior, exterrior, wall, floor
Additional Names:
Portland Bowers Roach,Bowers Roach,Portland Roach,Jordans Roach Limestone
Description:
Petrography
The stone is an open textured oolitic limestone from the Portlandian formation (Jurassic). The stone is formed from ooliths in a micrite (fine grained calcium carbonate) matrix. It is an extremely shelly stone with a large number of holes scattered throughout it. The holes are due to the removal of fossil shells by percolating rain. The finer-grained parts of the stone is very similar to Whitbed.
Strength
1. Compression - BS EN 1926
Average: 44.24 Mpa from 32 tests
2. Flexural Strength - BS EN 13161
Average: 3.94 Mpa from 140 tests
3. Breaking Load at Dowel Hole - BS EN 13364
Average: 4,288 N from 30 tests
Durability
1. Water Absorption - BS EN 13755
Average: 5.99% from 153 tests
2. Density - BS EN 1936
Average: 2,205 kg/m³ from 212 tests
3. Porosity - BS EN 1936
Average: 22.31% from 117 tests
4. Saturation Coefficient - BS EN 1936
Average: 0.65 from 111 tests
5. Salt Crystallisation - BS EN 12370
Average: 2.88% from 11 tests
Flooring / Paving
1. Flooring / Paving - EN14157
Average: 22.50 from 12 tests
2. Slip Resistance - TRRL Pendulum Test: Grit 120 Filled (Internal Flooring)
Wet Average 85 from 48 tests
Internal Flooring
Jordans Roach is suitable for all flooring applications up to intensive use such as shopping centres and airports with estimated visitor numbers of 500,000,000 with a service life without significant wear of 20 years. The dry slip resistance results of over 40 demonstrate that the stone will be safe in all normal applications.