AASHTO Accreditation Program
Many of Cochran’s clients have the need for third-party quality management, testing and inspection services during the construction of their projects. Cochran has a designated staff of professional engineers and qualified technicians who conduct field inspection & testing and lab analysis & testing services to ensure project specifications are met during the construction phase. Our professional engineers bring years of experience working at and with MoDOT. Our staff has demonstrated success in managing federally funded projects for a variety of municipal and MoDOT clients with our experience and technical expertise to understand the regulations and requirements of each project.
The AASHTO Accreditation Program (AAP) was established in 1988 as a means of formally recognizing the competence of testing laboratories to perform specific tests on construction materials. AAP is a voluntary program that is available to all testing laboratories including government, commercial, university, and research facilities. There are over 1,800 individual laboratories that are currently accredited through AAP, making it the largest accrediting body of construction materials testing laboratories. AAP utilizes laboratory assessment and proficiency sample services provided by the AASHTO Materials Reference Laboratory (AMRL) and the Cement and Concrete Reference Laboratory (CCRL). AMRL provides administrative coordination and technical support for AAP. The program accredits for over 650 AASHTO, ASTM, or state standards.
WHAT SETS COCHRAN APART?
Cochran operates two AASHTO-accredited labs – one at our headquarters in Union, Missouri and one at our office in Wentzville, Missouri. Both are under the direction of professional engineers and trained full-time Cochran technicians. We do not use second- or third-party testing agencies to meet our clients’ needs. Cochran has a designated staff of professional engineers and qualified technicians who conduct field inspection & material testing to ensure project specifications are met during the construction phase. Our labs are AASHTO accredited, our technicians are MoDOT, NICET certified and have ACI registered to provide all facets of pavement and bridge construction quality control. We are able to perform site testing, laboratory testing and reporting (CRE2O) required by MoDOT Quality Management. Our team will listen and respond to your project needs to achieve a cost-effective, quality project.
THE MARKETS WE SERVE:
- Roadway
- Bridge
- Local Government
- MoDOT
- Commercial
- Residential
- Industrial
- Taxiway & Runway
- Mass Grading & Utility
Click To Learn More About Cochran's
AASHTO Accreditation
Accreditation is granted by AAP and accreditation is limited to the laboratory and the standards for which the laboratory is accredited.
Cochran’s Accreditations:
Quality Management System – accredited since 3/15/2007
R18, C1077 (Aggregate), C1077 (Concrete)
Asphalt Mixture – accredited since 3/15/2007
T166 (Cores), T308, D2726 (Cores), D6307
Soil – accredited since 3/15/2007
T89, T90, T99, T180, T265, T310, D698, D1140, D1557, D2216, D2487, D2488, D4318, D6938
Aggregate – accredited since 3/15/2007
T2, T11, T19, T27, T84, T85, T248, T255, C29, C117, C127, C128, C136, C566, C702, D75, D4791
Concrete – accredited since 9/7/2007
M201, R60, T22, T23, T24, T97, T119, T121, T148, T152, T196, T231 (7000 psi and below), T309, C31, C39, C42, C78, C138, C143, C172, C173, C174, C231, C511, C617 (7000 psi and below), C1064, C1231 (7000 psi and below)
The AASHTO Accreditation Program (AAP) was established in 1988 as a means of formally recognizing the competence of testing laboratories to perform specific tests on construction materials. AAP is a voluntary program that is available to all testing laboratories including government, commercial, university, and research facilities. There are over 1,800 individual laboratories that are currently accredited through AAP, making it the largest accrediting body of construction materials testing laboratories. AAP utilizes laboratory assessment and proficiency sample services provided by the AASHTO Materials Reference Laboratory (AMRL) and the Cement and Concrete Reference Laboratory (CCRL). AMRL provides administrative coordination and technical support for AAP. The program accredits for over 650 AASHTO, ASTM, or state standards.
Union, Missouri Lab Accreditations
Accreditation is granted by AAP and accreditation is limited to the laboratory and the standards for which the laboratory is accredited.
Quality Management System – accredited since 3/15/2007
AASHTO R18 Establishing and Implementing a Quality System for Construction Materials Testing Laboratories
ASTM C1077 (Aggregate) Laboratories Testing Concrete and Concrete Aggregates
ASTM C1077 (Concrete) Laboratories Testing Concrete and Concrete Aggregates
ASTM D3666 (Aggregate) Minimum Requirements for Agencies Testing & Inspecting Road & Paving Materials
ASTM D3666 (Asphalt Mixture) Minimum Requirements for Agencies Testing & Inspecting Road & Paving Materials
ASTM E329 (Aggregate) Standard Specification for Agencies Engaged in the Testing and/or Inspection of Materials Used in Construction
ASTM E329 (Asphalt Mixture) Standard Specification for Agencies Engaged in the Testing and/or Inspection of Materials Used in Construction
Asphalt Mixture – accredited since 3/15/2007
AASHTO T30 Mechanical Analysis of Extracted Aggregate
AASHTO T166 (Cores) Bulk Specific Gravity of Compacted Hot Mix Asphalt Using Saturated Surface-Dry Specimens (Cores)
AASHTO T308 Determining the Asphalt Content of Hot Mix Asphalt (HMA) by the Ignition Method
ASTM D2726 (Cores) Bulk Specific Gravity of Compacted Hot Mix Asphalt Using Saturated Surface-Dry Specimens (Cores)
ASTM D5444 Mechanical Analysis of Extracted Aggregate
ASTM D6307 Determining the Asphalt Content of Hot Mix Asphalt (HMA) by the Ignition Method
Soil – accredited since 3/15/2007
AASHTO R58 Dry Preparation of Disturbed Soil and Soil Aggregate Samples for Test
AASHTO T89 Determining the Liquid Limit of Soils (Atterberg Limits)
AASHTO T90 Plastic Limit of Soils (Atterberg Limits)
AASHTO T99 The Moisture-Density Relations of Soils Using a 5.5-pound [2.5 kg] Rammer and an 12-inch [305 mm] Drop
AASHTO T180 Moisture-Density Relations of Soils Using a 10-pound [4.54 kg] Rammer and an 18-inch [457 mm] Drop
AASHTO T265 Laboratory Determination of Moisture Content of Soils
AASHTO T288 Minimum Soil Resistivity
AASHTO T289 pH of Soils for Corrosion Testing
AASHTO T310 In-Place Density & Moisture Content of Soil and Soil-Aggregate by Nuclear Methods (Shallow Depth)
ASTM D421 Dry Preparation of Disturbed Soil and Soil Aggregate Samples for Test
ASTM D698 The Moisture-Density Relations of Soils Using a 5.5-pound [2.5 kg] Rammer and a 12-inch [305 mm] Drop
ASTM D1140 Amount of Material in Soils Finer Than the No. 200 (75-µm) Sieve
ASTM D1557 Moisture-Density Relations of Soils Using a 10-pound [4.54 kg] Rammer and an 18-inch [457 mm] Drop
ASTM D2216 Laboratory Determination of Moisture Content of Soils
ASTM D2487 Classification of Soils for Engineering Purposes (Unified Soil Classification System)
ASTM D2488 Description & Identification of Soils (Visual-Manual Procedure)
ASTM D4318 Determining the Liquid Limit of Soils (Atterberg Limits)
ASTM D4318 Plastic Limit of Soils (Atterberg Limits)
ASTM D6938 In-Place Density & Moisture Content of Soil and Soil-Aggregate by Nuclear Methods (Shallow Depth)
ASTM G187 Soil Resistivity Using the Two-Electrode Soil Box
Aggregate – accredited since 3/15/2007
AASHTO R76 Reducing Samples of Aggregate to Testing Size
AASHTO R90 Sampling Aggregate
AASHTO T11 Materials Finer Than 75-µm (No. 200) Sieve in Mineral Aggregate by Washing
AASHTO T19 Bulk Density (“Unit Weight”) and Voids in Aggregate
AASHTO T27 Sieve Analysis of Fine and Coarse Aggregates
AASHTO T84 Specific Gravity (Relative Density) and Absorption of Fine Aggregate
AASHTO T85 Specific Gravity and Absorption of Coarse Aggregate
AASHTO T255 Total Moisture Content of Aggregate by Drying
ASTM C29 Bulk Density (“Unit Weight”) and Voids in Aggregate
ASTM C117 Materials Finer Than 75-µm (No. 200) Sieve in Mineral Aggregate by Washing
ASTM C127 Specific Gravity and Absorption of Coarse Aggregate
ASTM C128 Specific Gravity (Relative Density) and Absorption of Fine Aggregate
ASTM C136 Sieve Analysis of Fine and Coarse Aggregates
ASTM C566 Total Moisture Content of Aggregate by Drying
ASTM C702 Reducing Samples of Aggregate to Testing Size
ASTM D75 Sampling Aggregate
ASTM D4791 Flat Particles, Elongated Particles, or Flat and Elongated Particles in Coarse Aggregate
Concrete – accredited since 9/7/2007
M201 Moist Cabinets, Moist Rooms, and Water Storage Tanks Used in the Testing of Hydraulic Cements and Concretes
AASHTO R60 Sampling Freshly Mixed Concrete
AASHTO R100 (Beams) Making and Curing Concrete Beam Test Specimens in the Field
AASHTO R100 (Cylinders) Making and Curing Concrete Cylinder Test Specimens in the Field
AASHTO T22 Compressive Strength of Cylindrical Concrete Specimens
AASHTO T24 Obtaining and Testing Drilled Cores and Sawed Beams of Concrete
AASHTO T97 Flexural Strength of Concrete (Using Simple Beam with Third-Point Loading)
AASHTO T119 Slump of Hydraulic Cement Concrete
AASHTO T121 Density (Unit Weight), Yield, and Air Content of Concrete
AASHTO T148 Measuring Thickness of Concrete Elements Using Drilled Concrete Cores
AASHTO T152 Air Content of Freshly Mixed Concrete by the Pressure Method
AASHTO T196 Air Content of Freshly Mixed Concrete by the Volumetric Method
AASHTO T231 (7000 psi and below) Capping Cylindrical Concrete Specimens
AASHTO T309 Temperature of Freshly Mixed Portland Cement Concrete
ASTM C31 (Beams) Making and Curing Concrete Beam Test Specimens in the Field
ASTM C31 (Cylinders) Making and Curing Concrete Cylinder Test Specimens in the Field
ASTM C39 Comprehensive Strength of Cylindrical Concrete Specimens
ASTM C42 Obtaining and Testing Drilled Cores and Sawed Beams of Concrete
ASTM C78 Flexural Strength of Concrete (Using Simple Beam With Third-Point Loading)
ASTM C138 Density (Unit Weight), Yield, and Air Content of Concrete
ASTM C143 Slump of Hydraulic Cement Concrete
ASTM C172 Sampling Freshly Mixed Concrete
ASTM C173 Air Content of Freshly Mixed Concrete by the Volumetric Method
ASTM C174 Measuring Thickness of Concrete Elements Using Drilled Concrete Cores
ASTM C231 Air Content of Freshly Mixed Concrete by the Pressure Method
ASTM C511 Moist Cabinets, Moist Rooms, and Water Storage Tanks Used in the Testing of Hydraulic Cements and Concretes
ASTM C617 (7000 psi and below) Capping Cylindrical Concrete Specimens
ASTM C1064 Temperature of Freshly Mixed Portland Cement Concrete
ASTM C1231 (7000 psi and below) Use of Unbonded Caps in Determination of Compressive Strength of Hardened Concrete Cylinders
Wentzville, Missouri Lab Accreditations
Accreditation is granted by AAP and accreditation is limited to the laboratory and the standards for which the laboratory is accredited.
Quality Management System – accredited since 4/13/2018
AASHTO R18 Establishing and Implementing a Quality System for Construction Materials Testing Laboratories
ASTM C1077 (Concrete) Laboratories Testing Concrete and Concrete Aggregates
Concrete – accredited since 4/13/2018
M201 Moist Cabinets, Moist Rooms, and Water Storage Tanks Used in the Testing of Hydraulic Cements and Concretes
AASHTO R60 Sampling Freshly Mixed Concrete
AASHTO R100 (Cylinders) Making and Curing Concrete Cylinder Test Specimens in the Field
AASHTO T22 Compressive Strength of Cylindrical Concrete Specimens
AASHTO T119 Slump of Hydraulic Cement Concrete
AASHTO T121 Density (Unit Weight), Yield, and Air Content of Concrete
AASHTO T152 Air Content of Freshly Mixed Concrete by the Pressure Method
AASHTO T309 Temperature of Freshly Mixed Portland Cement Concrete
ASTM C31 (Cylinders) Making and Curing Concrete Cylinder Test Specimens in the Field
ASTM C39 Comprehensive Strength of Cylindrical Concrete Specimens
ASTM C138 Density (Unit Weight), Yield, and Air Content of Concrete
ASTM C143 Slump of Hydraulic Cement Concrete
ASTM C172 Sampling Freshly Mixed Concrete
ASTM C231 Air Content of Freshly Mixed Concrete by the Pressure Method
ASTM C511 Moist Cabinets, Moist Rooms, and Water Storage Tanks Used in the Testing of Hydraulic Cements and Concretes
ASTM C1064 Temperature of Freshly Mixed Portland Cement Concrete
ASTM C1231 (7000 psi and below) Use of Unbonded Caps in Determination of Compressive Strength of Hardened Concrete Cylinders