Technical

ASTM results indicate that Brunswick Limestone is exceptionally tough with a very high compressive strength and modulus of rupture. Low absorption and high abrasion resistance demonstrate that Brunswick Limestone is an excellent choice for building stone and patio or paving slab use with all results far exceeding ASTM standards.

ASTM C97 Absorption and Bulk Specific Gravity of Dimension Stone
ASTM C99 Modulus of Rupture of Dimension Stone
ASTM C170 Compressive Strenght of Dimension Stone
ASTM C1353* Abrasion Resistance of Dimension Stone Subject to Foot Traffic
*Replaces C241

ASTM C97

Average
Physical Requirements in
Accordance With ASTM C658
Bulk Specific Gravity (SSD)
2.713
- - - - -
Bulk Specific Gravity (Dry)
2.700
2.560*
Absorption %
0.49
Max. 3**
Apparent Specific Gravity
2.736
- - - - -



*This specific gravity is required to classify a rock as "high density".
**This is the maximum allowed absorption, in percent for a "high density" classified rock.
ASTM C99
Specimen No.
Perpendicular or
Parrallel to the Rift
Dry or Wet
Conditions
Modulus of
Rupture, MPa
Physical Requirements in
Accordance with
ASTM C658
1
Perpendicular
Wet
17.3

2
Perpendicular
Wet
15.8

3
Perpendicular
Wet
17.8

4
Perpendicular
Wet
20.9

5
Perpendicular
Wet
16.3
Minimum 6.9 MPa
6
Perpendicular
Dry
25.3

7
Perpendicular
Dry
24.6

8
Perpendicular
Dry
21.2

9
Perpendicular
Dry
25.2

10
Perpendicular
Dry
24.1

ASTM C170
Core No.
Diameter, mm
Area. mm
Length after capping, mm
L/D
Load, kN
Compressive
Strength, MPa
1
56.0
2.463
142
2.54
154.4
64.3
2
56.0
2.463
112
2.00
158.1
64.2
3
56.0
2.463
88
1.56
279.0
109.6
4
56.0
2.463
88
1.58
248.0
97.6







The min. compressive strength in accordance with ASTM C658, for "high density" stone is 55 MPa
ASTM C1353
Specimen No.
Surface
Loss, in grams
Hardness
Physical Requirements in
Accordance with ASTM C658
1
Textured
6.89
14.39

2
Machined
3.73
26.06
Minimum Hardness 10
3
Machined
8.41
11.79