Technical Data Sheet
Hanson Bath and Portland Stone
Flick Quarry, Nr Little Rollright, Chipping Norton, Oxon.
Contact : Portland Unit, Easton
Tel. 01305 820 207 Fax. 01395 820 275
email: [email protected]
Grid Reference: — — —
Compiled September 1999
This data sheet was compiled by the Building Research Establishment (BRE). Where possible, data collected in earlier surveys has been used to help interpret the test results. The data sheet was compiled in September 1999 using the results of tests carried out to the proposed European Standards. The work was carried out by BRE as part of a Partners in Technology Programme funded by the Department of the Environment, Transport and the Regions and Hanson Bath and Portland Stone and does not represent an endorsement of the stone by BRE.
The quarry is near Little Rollright, Chipping Norton. There are plenty of reserves.
The stone is an oolithic limestone and the beds are part of the Inferior Oolite of middle Jurassic age.
Expected Durability and Performance
It is important that the results from the sodium sulphate crystallisation tests are not viewed in isolation. They should be considered with the results from the porosity and water absorption tests and the performance of the stone in existing buildings. Stone from the Cotswold region is traditionally used as building stone in the region and increasingly in many other towns and cities in the UK. The low porosity and high strength indicate a stone that will have good resistance to weathering. The sodium sulphate crystallisation result also indicates that the stone will have good resistance to salt damage and that it will perform well in all but the most exposed locations where it may it may require some extra protection or careful design and detailing to shed water.
The abrasion resistance is low and so the stone should only be used in lightly trafficked areas.
Test Results – Flick
(Test methods Note 1 = EN1341, Note 2 = EN 1342, Note 3 = EN 1341 /BRE 141, Note 4 = BRE 141)
Tests were carried out at BRE in 1997. N.D. = not determined