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Technical Data Sheet
Stainton Sandstone Stainton
Quarry, near Barnard Castle, Co.Durham Stainton
Quarry, Barnard Castle, Durham, DL12 8RB Contact : Natural Stone Products Ltd Tel:
01833 690444 Fax: 01833 690377 Grid Reference : ---- ----
Compiled November 1997, updated
June 2000
This data sheet was compiled by the Building Research
Establishment (BRE)., The data sheet was compiled in November 1997 and updated
in June 2000 using BRE test results and data collected in earlier surveys. 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 Natural
Stone Products Ltd and does not represent an endorsement of the stone by BRE.
General
The quarry is in the village of Stainton about 2 miles east of
Barnard Castle. Stone has been quarried in the area since around 1600 and there
are good reserves of stone.
Petrography
Stainton sandstone is from the Coal Measures of
Carboniferous Age. It is a fine-grained stone, buff in colour with a fine brown
speckle. Stone is extracted from a 10.5m face below about 3.6m of overburden.
Large blocks are available but it is generally supplied at depths of 1.2 - 1.5m
on bed.
Expected Durability
and Performance
It is important that the results
from the individual tests are not viewed in isolation. They should be considered
together and compared to the performance of the stone in existing buildings and
other uses. Sandstones from the Carboniferous series are traditionally
acknowledged as generally being a very durable building and paving stone and
have been used extensively in many towns and cities in the UK. Stainton
sandstone appears to be a durable stone that is not effected by acid rain or air
pollution. The high weight lost in the harsh saturated sodium sulphate
crystallisation test indicates limited resistance to salt damage in very severe
environments (for example in coastal locations or from de-icing salts);
sandstones usually have good frost resistance. The compressive strength of the
stone is typical of the range for sandstone. The flexural strength is towards
the lower end of the range for sandstones and if used for paving then the units
may need to be thicker than those for some other sandstones. The abrasion
resistance result suggests that the stone may wear excessively if used in
heavily trafficked areas.
Overall, should be suitable for use in most aspects of construction including
flooring in lightly trafficked areas, load bearing masonry and cladding.
Test Results
- Stainton Sandstone
Safety
in Use |
Slip Resistance (Note 1) |
Wet: 80
|
Values > 40 are considered
safe. |
Abrasion Resistance
(Note 1) |
29.0
|
Values <23.0 are considered
suitable for use in heavily trafficked
areas |
Strength
under load |
1) Compression(Note 2) |
48.0 - 55.3 MPa
|
Loaded perpendicular
to the bedding plane ambient humidity |
2) Bending (Note 1) |
5.9 MPa
|
Loaded perpendicular to the
bedding plane ambient humidity |
Porosity
and Water Absorption |
1) Porosity (Note 3) |
17.0 - 17.3%
|
|
2) Saturation Coefficient (Note 3) |
0.60 - 0.64
|
|
3) Water Absorption |
4.8% (by wt)
|
|
4) Bulk specific gravity |
2190-2220kg/m3
|
|
Resistance to Frost |
Freeze/Thaw Test (Note 1) |
Not determined
|
Loaded perpendicular
to the bedding plane ambient humidity |
Resistance
to Salt |
Sodium Sulphate Crystallisation Test
(Note 14) (Saturated) |
85 - 98% Mean wt loss
|
|
Resistance to Acidity |
Acid Immersion Test(Note 4) |
Pass
|
All samples passed the test with no splitting or
delamination |
(Test methods Note 1 = prEN1341, Note 2 = prEN 1342, Note 3 =
prEN 1341 /BRE 141, Note 4 = BRE 141)
Tests were carried out at BRE between July and September 1996,
additional data from 1986 and the producer are also included)
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