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About Us
AASHTO Accreditation
Laboratory Assessments
Proficiency Samples
Falling Weight Deflectometer
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Specifiers

The gold standard for laboratory accreditation in the construction industry

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Samples that drive quality

"I don’t think we would have the quality of the AB program that we do [without] having their involvement, maintaining the standard that we do. I think it’s helped us immensely."

New Hampshire Department of Transportation

Alan Rawson, Bureau of Materials & Research Administrator

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50+ years of experience
3,000+
PSP participants
23,000+
samples shipped per year
1,000
laboratory assessments per year
2,000+
accredited labs








Proficiency Sample Data Documents Enroll in our program

Proficiency Sample Schedule

Sample TypeRoundEnrollment CutoffShip Date*Non-Receipt*Closing DateFinal Report
Asphalt Mixture Solvent Extraction91/929/30/201911/14/201911/21/20191/16/20201/30/2020
Asphalt Mixture Ignition Oven39/4011/4/201912/5/201912/19/20192/6/20202/20/2020
Fine Aggregate207/2081/2/20201/30/20202/13/20203/27/20204/10/2020
Soil Classification and Compaction181/1821/23/20202/20/20203/5/20204/16/20204/30/2020
Viscosity Graded Asphalt Cement259/2601/30/20202/27/20203/12/20204/23/20205/7/2020
Performance Graded Asphalt Binder259/2602/6/20203/5/20203/19/20204/30/20205/14/2020
Asphalt Mixture Hveem Design73/745/7/20205/28/20206/11/20207/23/20208/6/2020
Asphalt Mixture Marshall Design73/745/7/20205/28/20206/11/20207/30/20208/13/2020
Asphalt Mixture Gyratory49/505/28/20206/18/20207/2/20208/13/20208/27/2020
Emulsified Asphalt73/746/4/20206/25/20207/9/20208/20/20209/3/2020
Slurry and Micro Systems9/106/4/20206/25/20207/9/20208/27/20209/10/2020
Soil Resistance R-Value181/1827/2/20207/23/20208/6/20209/17/202010/1/2020
Soil California Bearing Ratio (CBR)181/1827/2/20207/23/20208/6/20209/17/202010/8/2020
Coarse Aggregate209/2108/13/20209/3/20209/17/202010/29/202011/12/2020
Viscosity Graded Asphalt Cement261/2628/20/20209/10/20209/24/202011/5/202011/19/2020
Performance Graded Asphalt Binder261/2628/27/20209/17/202010/1/202011/12/202011/27/2020
Paint65/669/3/20209/24/202010/8/202011/19/202012/3/2020
Asphalt Mixture Solvent Extraction93/9410/22/202011/12/202011/23/20201/14/20211/28/2021
Asphalt Mixture Ignition Oven41/4211/19/202012/10/202010/22/20202/4/20212/18/2021
Sample TypeRoundEnrollment CutoffShip Date*Non-Receipt*Closing DateFinal Report

NOTE: All dates are subject to change.

*Non-Receipt Date - the date by which your laboratory should receive a sample; please contact us if you have not received your sample by this date

*Closing Date - All testing data must be submitted and confirmed (by the laboratory) on or before this date. Data submitted after this date will not be included in the analysis and ratings will not be received.

*Enrollment Cutoff Date - If your laboratory is enrolled after this date, you will be placed on a Waiting List for that specific sample. If there are enough remaining samples, they will be shipped to your laboratory after the Non-Receipt Date and an invoice will follow by mail.
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