Landmark is actively engaged in various proficiency sampling certification programs: AASHTO Materials Reference Laboratory (AMRL), Cement and Concrete Reference Laboratory (CCRL) and Arizona Department of Transportation (ADOT). Listed below are various classifications and test methods that Landmark is currently certified in:
AMRL - Soil Classification and Compaction Proficiency ProgramAASHTO T88/ASTM D422, Particle Size AnalysisAASHTO T89,T90/ASTM D4318, Atterberg Limits AASHTO T99/ASTM D698, Moisture Density AASHTO T100/ASTM D854, Specific Gravity AMRL - Fine Aggregate Proficiency ProgramAASHTO T11/ASTM C117, Minus No 200 WashAASHTO T27/ASTM C136, Sieve Analysis AASHTO T84/ASTM C128, Specific Gravity AASHTO T176/ASTM D2419, Sand Equivalent AASHTO T104/ASTM C88, Sulfate Soundness AASHTO T304/ASTM C1252, Void Content AMRL - Hot Mix Asphalt Design Proficiency ProgramAASHTO T209/ASTM D2041, Max Specific GravityAASHTO T166/ASTM D2726, Bulk Specific Gravity AASHTO T269/ASTM D3203, Percent Air Voids AASHTO T245/ASTM D1559, Marshall Stability & Flow AMRL - Hot Mix Asphalt Ignition Oven Proficiency ProgramAASHTO T308/ASTM D6307, Ignition MethodAASHTO T30/ASTM D5444, Mechanical Analysis AMRL - Hot Asphalt Gyratory Proficiency ProgramAASHTO T209/ASTM D2041, Maximum Specific GravityAASHTO T166/ASTM D2726, Bulk Specific Gravity AASHTO T312/ASTM D6925, Specimen Height AASHTO T312/ASTM D6925, Corrected Relative Density |
Cement and Concrete Reference LaboratoryASTM C143, Slump of Portland Cement ConcreteASTM C138, Unit Weight of Freshly Mixed Concrete ASTM C173, Air Content of Freshly Mixed Concrete by the Volumetric Method ASTM C231, Air Content of Freshly Mixed Concrete by th Pressure Method ASTM C31, C39, C511, C617, C1231, Preparation, Curing, Capping, and Testing Cylinders ASTM C1064, Temperature of Freshly Mixed Portland Cement Concrete ASTM C702, Reducing Field Samples to Testing Size ASTM C40, Organic Impurities in Fine Aggregate for Concrete ASTM C566, Total Moisture Content of Aggregate by Drying ASTM C136, Sieve Analysis of Fine Aggregate and Coarse Aggregate ASTM C117, Amount of Material Finer then (No. 200) Sieve in Aggregate by washing ASTM C128, Specific Gravity and Absorption of Fine Aggregate ASTM C127, Specific Gravity and Absorption of Coarse Aggregate Arizona Department of Transportation Proficiency ProgramAriz 410, Marshal CompactionAriz 225, Proctor Density Method A or Method D Ariz, 210, 211, Moisture Content, Specific Gravity Ariz 242, Sand Equivalent Ariz 247, Un-compacted Void Content Ariz 212, Fractured Particles Ariz 233, Flakiness Index Ariz 314. Compressive Strength of Cylindrical Concrete Specimens |