Gorman Technical Labratories
The primary focus of GTL is testing and certification of construction materials particularly those used in building roads and weather resistant envelopes for structures such as roofs, exterior walls and foundation coatings and coverings. A secondary focus is on the cooperative development of products or methods of production for clients who want assistance in research and development activities. GTL is staffed with considerable technical talent that has experience related to both testing and R&D activities and is accredited through American Association of Laboratory Accreditation (A2LA).
A2LA accredited in the following services:
ASTM D7173
Standard Practice for Determining the Separation Tendency of Polymer from Polymer-Modified Asphalt
ASTM D6084/D6084M
Standard Method for Elastic Recovery of Asphalt Materials by Ductilometer
ASTM D823
Standard Practices for Producing Films of Uniform Thickness of Paint, Coatings and Related Products on Test Panels Practice E
ASTM D113
Standard Method for Ductility of Asphalt Materials
ASTM D5167
Practice for Melting of Hot-Applied Joint and Crack Sealant and Filler for Evaluation
ASTM G155
Standard Practice for Operating Xenon Arc Lamp Apparatus for Exposure of Materials
ASTM G151
Standard Practice for Exposing Nonmetallic Materials in Accelerated Test Devices that Use Laboratory Light Sources
ASTM D5/D5M
Test Method for Penetration of Bituminous Materials
ASTM D5329
Standard Test Methods for Sealants and Fillers, Hot-Applied, for Joints and Cracks in Asphalt Pavements and Portland Cement Concrete Pavements
ASTM D36/D36M
Test Method for Softening Point of Bitumen (Ring-and-Ball Apparatus)
ASTM D6690
Standard Specification for Joint and Crack Sealants, Hot Applied, for Concrete and Asphalt Pavements
ASTM D1076
Standard Specification for Rubber-Concentrated, Ammonia, Preserved, Creamed, and Centrifuged Natural Latex, (Except Sections 10, 19-31 & 37)
ASTM G154
Practice for Operating Fluorescent Ultraviolet (UV) Lamp Apparatus for Exposure of Nonmetallic Materials
ASTM D7897
Laboratory Soiling and Weathering of Roofing Materials to Simulate Effects of Natural Exposure on Solar Reflectance and Thermal Emittance
ASTM E1980
Calculating Solar Reflectance Index of Horizontal and Low-Sloped Opaque Surfaces
ASTM E805
Identification of Instrumental Methods of Color or Color-Difference Measurement of Materials, Section 9
ASTM D751
Standard Test Methods for Coated Fabrics, Section 9
ASTM C1371
Standard Test Method for Determination of Emittance of Materials Near Room Temperature Using Portable Emissometers
ASTM C1549
Standard Test Method for Determination of Solar Reflectance Near Ambient Temperature Using a Portable Solar Reflectometer
ASTM D1005
Standard Test Method for Measurement of Dry-Film Thickness of Organic Coatings Using Micrometers, Producer A section 6.1






AASHTO Accredited Asphalt Binder Testing:
ASTM D7643
Determining the Continuous Grading Temperatures and Continuous Grades for PG Graded Asphalt Binders
ASTM D7405
Multiple Stress Creep and Recovery (MSCR) at 64C, 25mm plate, 1mm gap
ASTM D7175
Determining the Rheological Properties of Asphalt Binder Using a Dynamic Shear Rheometer (DSR)
ASTM D6648
Determining the Flexural Creep Stiffness of Asphalt Binder Using the Bending Beam Rheometer (BBR)
ASTM D6521
Accelerated Aging of Asphalt Binder Using a Pressurized Aging Vessel
ASTM D4402
Standard Test Method for Viscosity Determination of Asphalt at Elevated Temperatures Using a Rotational Viscometer
ASTM D2872
Rolling Thin-Film Oven Testing
ASTM D92
Flash Point by Cleveland Open Cup
ASTM D70
Specific Gravity (Relative Density) of Asphalt Cement
AASHTO T350
Multiple Stress Creep and Recovery (MSCR) at 64C, 25mm plate, 1mm gap
AASHTO T316
Viscosity Determination of Asphalt Binder Using Rotational Viscometer
AASHTO T315
Determining the Rheological Properties of Asphalt Binder Using a Dynamic Shear Rheometer (DSR)
AASHTO T31
Determining the Flexural Creep Stiffness of Asphalt Binder Using the Bending Beam Rheometer (BBR)
AASHTO T240
Rolling Thin-Film Oven Testing
AASHTO T228
Specific Gravity (Relative Density) of Asphalt Cement
AASHTO T48
Flash point by Cleveland Open Cup
ASSHTO R29
Grading or Verifying the Performance Grade of an Asphalt Binder
ASSHTO R28
Accelerated Aging of Asphalt Binder Using a Pressurized Aging Vessel
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