Test Specifications

General Specifications:

Flexural Strength ASTM C880 2563psi
Bulk Specific Gravity 2.58
Bulk Specific Gravity (SSD) 2.63
Apparent Specific Gravity 2.72
Absorption (%) 1.9
Compressive Strength over 19,000 psi

Los Angeles Abrasion Test¹

Test Specification: ASTM C 131 Grading
Test Values: NYSDOT Maximum Allowable Loss - 45%
Test Results: 33.61% Loss

Also tested a 48" x 18" x 2" thick paver supported on four corners with a concentrated load applied at the center. The paver withstood over 3,000 lbs. before failure occurred.

¹These tests were conducted according to ASTM C 127 Specifications by Atlantic Testing Laboratories, Ltd., Albany, New York and Soil & Material Testing, Inc., Binghamton, New York.

Static Coefficient of Friction Test²

Glacier Blue, Honed Finish

Static Coefficient of Friction (SCOF)	Dry	Wet	Specification
As Received	0.7	0.8	> 0.6
Cleaned*	0.7	0.8	> 0.6

Glacier Blue, Flame Finish

Static Coefficient of Friction (SCOF)	Dry	Wet	Specification
As Received	1.0	0.7	> 0.6
Cleaned*	1.0	0.9	> 0.6

*Cleaned with Renovator Cleaner as per test procedure

²The Ceramic Tile Institute requires ceramic surfaces to have a minimum SCOF of 0.6 when tested dry or wet according to ASTM C 1028 to be considered slip resistant. Glacier Blue™ Devonian Sandstone, Honed Finish and Glacier Blue™ Devonian Sandstone, Flame Finish meets this requirement when tested dry or wet. These tests were conducted by ABIC Testing Laboratories, Inc., Fairfield, NJ.

Freeze –Thaw Resistance Testing, ASTM C-1026

ABIC Testing Laboratories, Inc. was authorized to test the Glacier Blue™ Devonian Stone for freeze-thaw resistance according to ASTM C-1026. Below are the results. You may click here to view a copy of the original test results.

* Previously soaked stone:  One test cycle consists of 6-8 hours at 0ºF followed by soaking 16 hours in water at room temperature.

The Glacier Blue™ Devonian Stone showed no change in appearance after twenty freeze-thaw cycles according to the test procedure in ASTM C-1026.

Sandstone vs. Limestone

Read about the differences between sandstone and limestone in this article by Dr. William Kelly, Associate Director, New York State Geological Survey.