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PHYSICAL PROPERTIES OF IRISH BLUE LIMESTONE |
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The Irish Blue Limestone is a natural material and the physical properties reflect the conditions under which the stone originally formed and the subsequent geological history of Ireland. The best pedigree for the stone is its successful use as a building material in Ireland during the last 3000 years and the fact that many of the older structures are still standing.
Modern man, however, normally seeks to confirm the suitability of the stone by using a range of tests to quantify what are considered to be the important physical parameters of the material.
The Irish Blue Limestone has been tested by a wide range of laboratories in a number of countries during the last 10 years and the producers have drawn on these results to produce a general guide to the physical properties of the stone. |
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| TEST |
UNITS |
MINIMUM |
TYPICAL |
MAXIMUM |
| Apparent Density |
Kg/m3 |
2.68 |
2.69 |
2.70 |
| Porosity |
%Vol |
0.15 |
0.31 |
0.51 |
| Frost Resistance |
|
|
No Effect |
|
| Capillarity Coefficient |
GC |
-5.55 |
-6.8 |
-8.43 |
| Thermal Expansion |
mm/mk |
|
0.01 |
|
| Thermal Conductivity |
W/mK |
|
2.5-3.1 |
|
| Compressive Strength |
N/mm2 |
|
110-126 |
|
| Flexural Strength |
N/mm2 |
13.3 |
14.7 |
15.8 |
| Ultrasonic Velocity |
m/s |
5180 |
5416 |
5785 |
| Scratch Test |
mm |
|
0.3 |
|
| Wear Resistance |
mm/1000m |
|
3.5-4.2 |
|
| Modulus of Elasticity |
N/mm2 |
740000 |
751000 |
760000 |
| Water Absorption |
%Dry Mass |
0.12 |
0.14 |
0.20 |
| Sulphate Attack |
Minimal due to compact grain structure |
| Sound Insulation |
Dependent on homogeneous mass, large blocks of Irish Blue Limestone
Offer good sound attenuation. |
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| Copyrights ©2011. All Rights Reserved By Irish Natural Stone Ltd |
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