Certifications

Landmark is actively engaged in various proficiency sampling certification programs: AASHTO Materials Reference Laboratory (AASHTO re:source), 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:

AASHTO re:source – Soil Classification and Compaction Proficiency Program

  • AASHTO T89,T90/ASTM D4318, Atterberg Limits
    AASHTO T99/ASTM D698, Moisture Density
    AASHTO T100/ASTM D854, Specific Gravity

AASHTO re:source – Hot Mix Asphalt Design Proficiency Program

  • AASHTO T209/ASTM D2041, Max Specific Gravity
    AASHTO T166/ASTM D2726, Bulk Specific Gravity
    AASHTO T269/ASTM D3203, Percent Air Voids
    AASHTO T245/ASTM D1559, Marshall Stability & Flow

AASHTO re:source – Hot Mix Asphalt Ignition Oven Proficiency Program

  • AASHTO T308/ASTM D6307, Ignition Method
    AASHTO T30/ASTM D5444, Mechanical Analysis

AASHTO re:source – Fine Aggregate Proficiency Program

  • AASHTO T11/ASTM C117, Minus No 200 Wash
    AASHTO 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

AASHTO re:source – Hot Asphalt Gyratory Proficiency Program

  • AASHTO T209/ASTM D2041, Maximum Specific Gravity
    AASHTO T166/ASTM D2726, Bulk Specific Gravity
    AASHTO T312/ASTM D6925, Specimen Height
    AASHTO T312/ASTM D6925, Corrected Relative Density

AASHTO re:source – Quality Management System

  • AASHTO R18, Quality System for construction Material Testing
    AASHTO C1077(Aggregates & Concrete), Laboratory Testing Concrete and Concrete Aggregates
    AASHTO C1093, Testing Agencies for Unit Masonry
    AASHTO D3666 (Aggregate & Asphalt Mixture, Inspecting Road and Paving Materials
    AASHTO D3740, Testing or Inspection of Soil and Rock Used in Engineering Design and Construction
    AASHTO E329(Aggregate, Asphalt Mixture, Concrete, and Soil), Testing and Inspection of Materials Used in Construction

AASHTO re:source – Emulsified Asphalt

  • AASHTO T59, Freezing
    AASHTO T59, Particle Charge
    AASHTO T59, Residue by Distillation/Evaporation
    AASHTO T59, Saybolt Viscosity at 25°C/50°C
    AASHTO T59, Settlement and Storage Stability
    AASHTO T59, Sieve Test
    AASHTO D6929, Freezing
    AASHTO D6930, Settlement and Storage Stability
    AASHTO D6933, Sieve Test
    AASHTO D6934, Residue by Evaporation
    AASHTO D6997, Residue by Distillation
    AASHTO D7402, Particle Charge
    AASHTO D7496-D88 Saybolt Viscosity at 25°C/50°C

AASHTO re:source – Asphalt Mixture

  • AASHTO R30, Mixture Conditioning of Hot Mix Asphalt
    AASHTO R35, Superpave Volumetric Design for Hot Mix Asphalt
    AASHTO T305, Draindown Characteristics of HMA
    AASHTO T312, Density of HMA by Superpave Gyratory Compactor
    AASHTO T331, Bulk Specific Gravity of Compacted Bituminous Mixtures Using Automatic Vacuum Sealing Method
    AASHTO T355, Density of Bituminous Concrete in Place by Nuclear Methods
    AASHTO T1188, Bulk Specific Gravity of Compacted Bituminous Mixtures Using Paraffin-Coated Specimens
    AASHTO D4867 Resistance of Compacted Mixtures to Moisture Induced Damage

AASHTO re:source – Soil

  • AASHTO T134, Moisture Density Relations of Soil-Cement Mixtures
    AASHTO T135, Wetting and Drying Test of Compacted Soil-Cement Mixtures
    AASHTO T193, California Bearing Ratio

AASHTO re:source – Asphalt Mixture

  • AASHTO T19, Bulk Density and Voids in Aggregate
    AASHTO T21, Organic Impurities in Fine Aggregates for Concrete
    AASHTO T85, Specific Gravity and Absorption of Coarse Aggregate
    AASHTO T96, Resistance to Abrasion of small-size Coarse Aggregate by Abrasion and Impact in the Los Angeles Machine
    AASHTO T104, Soundness of Aggregate by Use of Sodium Sulfate or Magnesium Sulfate
    AASHTO T112, Clay Lumps and Friable Particles in Aggregate
    AASHTO T113, Lightweight Pieces in Aggregate
    AASHTO T210, Aggregate Durability Index
    AASHTO T303, Potential Alkali Reactivity of Aggregates(Mortar-Bar Method)
    AASHTO T304, Uncompacted Void Content of Fine Agretate (influenced by Shape, Texture, and Grading).
    AASHTO C1260, Potential Alkali Reactivity of Aggregates(Mortar-Bar Method)
    AASHTO C1567, Determining the Potential Alkali-Silica Reactivity of Combinations of Cementitous Materials and Aggregate(Accelerated Mortar-Bar Method)

Arizona Department of Transportation Proficiency Program

  • Ariz 406, Moisture Content of Bituminous Mixtures
    Ariz 410, Marshal Compaction
    Ariz 415, Bulk Specific Gravity of Compacted Mixtures
    Ariz 417, Maxiumum Specific Gravity (RICE) Ariz 427, Binder Content By Ignition Furnace
    Ariz 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

Cement and Concrete Reference Laboratory

  • ASTM C143, Slump of Portland Cement Concrete
    ASTM 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 the 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

CCRL – Masonry

  • AASHTO C140, Sampling and Testing Concrete Masonry Units and Related Units
    AASHTO C780, Preconstruction and Construction Evaluation of Mortars for Plain and Reinforced Unit Masonry - Compressive Strength
    AASHTO C1314, Compressive Strength of Masonry Prisms
    AASHTO C1552, Capping Concrete Masonry Units, Related Units and Masonry Prisms for Compression Testing