ASTM C-97-83,NBN B15-220

Gsb

2.68

2.69

2.70

Unit Weight

lbs/ft3

-

169

-

Porosity

BRE PD85/75

% Vol.

0.15

0.31

0.51

Frost Resistance

NBN B05-203

No effect

-

Capillary Coefficient

NBN B05-201

GC

-5.55

-6.80

-8.43

Thermal Expansion

in/in/oF

-

5.6E-06

-

Thermal Conductivity

B.T.U./hr/ft2/o/in.

17.3

-

21.5

Compressive Strength

ASTM C170-87

psi

15955

-

18276

Flexural Strength

NBN B15-214

psi

1929

2132

2292

Ultrasonic Velocity

NBN B15-229

ft/s

16995

17769

18980

Scratch Test

in

-

0.01

-

Wear Resistance

NBN B15-223

in/106in

4

-

4

Modulus of Elasticity

NBN B15-203

psi

107,333,273

108,928,768

110,234,173

Water Absorption

ASTM C97-83, NBN B15-221

% Dry Mass

0.12

0.14

0.02

Sulphate Attack

Minimal due to compact grain structure.

Sound Insulation

Dependent on homogeneous mass,
large blocks of Irish Limestone offer
good attenuation.

Average Block Size

8ft long x 4.5ft high x 3.3ft thick