Lincolnshire Limestone

Clipsham Lincolnshire Limestone

Petrography Description (EN 12407:2001)

The stone is an oolithic limestone from the Lincolnshire Limestone formation of middle Jurassic age. It is a creamy-brown coloured stone with many pieces of shell. Some blocks can contain a substantial amount of the harder blue stone.

Clipsham Lincolnshire Limestone

Safety in Use
Slip Resistance (Note 1)	N.D.	Values > 40 are considered safe
Abrasion Resistance(Note 1)	N.D.	Values <23.0 are considered suitable for use in heavily trafficked areas
Strength under load
1) Compression(Note 2)	27.0 MPa	Loaded perpendicular to the bedding plane ambient humidity
2) Bending (Note 1)	4.7 MPa	Loaded perpendicular to the bedding plane ambient humidity
	2.5 MPa	Loaded parallel to the bedding plane ambient humidity
Porosity and Water Absorption
1) Porosity (Note 3)	18.8%
2) Saturation Coefficient (Note 3)	0.81
3) Water Absorption	6.9% (by wt)
4) Bulk specific gravity	2207kg/m3
Resistance to Frost
Freeze/Thaw Test (Note 1)	N.D.
Resistance to Salt
Sodium Sulphate Crystallisation Test (Note 3)	19.12% Mean wt loss

(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

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