Learn how to be an AASHTO lab 24/7

Published September 08, 2026

Slurry and Micro Surfacing Samples 19 and 20 have been packaged and are being shipped to your laboratory. The official shipping date for these samples is September 10, 2026 however your laboratory may receive the samples before that date.

Upon receipt of the box, carefully open it and check to see if the sample components were damaged in shipment or if one is missing. If you are missing any of the components described in this video, or do not receive your samples by September 24, 2026, please contact us immediately.

All pertinent information such as sample instructions, data sheets, and Safety Data Sheets can be found on the AASHTO re:source website in the “Data Sheets and Instructions” page.

Published September 02, 2026

Asphalt Mixtures Hamburg Wheel Track Samples 5 and 6 are currently being processed and packaged for shipping.

The samples will be shipped on September 10, 2026  

Upon receipt, carefully open the box and check to see if the samples were damaged in shipment or if they are missing a component.  

All pertinent information such as sample instructions, data sheets, and Safety Data Sheets can be found on the AASHTO re:source website in the “Data Sheets and Instructions” page.

Published July 31, 2026

After many years of balloting, the 2026 edition of AASHTO R 18 was finally released on July 31, 2026, the first major update since 2018. In this video, Accreditation Program Director Brian Johnson sits down with Communications Manager Kim Swanson to talk through what actually changed in the new standard, the thinking behind those changes, and what it all means for AASHTO Accredited laboratories.

Since AASHTO R 18 is the foundation of AASHTO Accreditation, these updates touch every accredited lab. The good news is there's nothing earth-shattering here, but there are some new items labs will want to build into their Quality Management Systems.

AASHTO re:source and CCRL won't begin assessing conformance to the updated requirements until January 1, 2027, so you have time between now and the end of the year to get your QMS updated.

In this video, Brian and Kim cover:

1. Why the standard was updated, clarifying confusing requirements, adding lessons learned over the years, removing items that proved unimportant, and working lab and specifier feedback through the balloting process;
2. New terminology, plus updates to Document Control, Organization, and Staff, including the change to position descriptions that finally addresses the long-standing technician education issue;
3. Technician training and competency, customer complaints, internal audits, management reviews, and corrective action; and
4. Equipment, calibration, and inventory requirements, along with the updated Annex tables, including a brand-new Pavement Preservation table.

Have questions about implementing the changes? We're happy to help. Reach out to us at info@aashtoresource.org or 240.436.4900.

Published July 13, 2026

Aggregate Gradation and Gravity Proficiency Samples 9 and 10 are currently being processed and packaged for shipping.

The samples will be shipped to you on July 23, 2026. Please note that Sample 9 and Sample 10 are shipped in separate boxes and will most likely arrive a few days apart.

Upon receipt, carefully open the boxes and check to see if the samples were damaged in shipment or if they are missing a component. Use caution when opening the boxes as a box-cutter style knife may puncture the sample bags inside.

All pertinent information such as sample instructions, data sheets, and Safety Data Sheets can be found on the AASHTO re:source website in the “Data Sheets and Instructions” page.

Published May 18, 2026

Asphalt Mixtures Gyratory Design Samples 61 and 62 have been packaged and are being shipped to your laboratory.

The official shipping date for these samples is May 21, 2026; however, your laboratory may receive the samples before that date. On May 21, the sample instructions and on-line data sheet will be released to the participants.

All pertinent information such as sample instructions, data sheets, and Safety Data Sheets can be found on the AASHTO re:source website in the “Data Sheets and Instructions” page.

Published May 8, 2026

The following samples have been prepared and packaged for shipment:

• Asphalt Mixtures Marshall Design 85/86
• Asphalt Mixtures Hveem Design by California Kneading Compaction Samples 7/8 and,
• Asphalt Mixtures Hveem Design by Colorado 100 mm (4-in) Gyratory Compaction Samples 7/8

The official shipping date for these samples is May 7, 2026, however your laboratory may receive the samples before that date. On May 7, the sample instructions and on-line data sheet will be released to the participants.

Published April 23, 2026

There have been a lot of changes over the years with the types of thermometers people can use due to restrictions on mercury thermometers, policies regarding calibration, and the way standards describe the requirements of thermometers.

The good news is that there have been some activities going on recently that are going to help eliminate some of this confusion.

View the full policy.

Published January 21, 2026

As a cornerstone of our commitment to spearheading a quality management revolution in the construction materials testing and inspection industry, TechEx is more than just a conference. It’s a collaborative platform where industry professionals come together to exchange knowledge, share experiences, and drive continual improvement across the sector. See what attendees of past events are saying about TechEx!

Published January 13, 2026

Aggregate Degradation Proficiency Samples 9 and 10 are currently being processed and packaged for shipping.

The samples will be shipped to you on January 22, 2026. Please note that Sample 9 and Sample 10 are shipped in separate boxes and will most likely arrive a few days apart.

Please treat these samples as you would treat typical testing samples that were brought into your laboratory.

Upon receipt, carefully open the boxes and check to see if the samples were damaged in shipment or if they are missing a component. Use caution when opening the boxes as a box-cutter style knife may puncture the sample bags inside. If you receive samples that are damaged or missing a portion of a size fraction, please contact us immediately.

Each bag of material will need to be oven-dried, washed in accordance with AASHTO T11 or ASTM C117, and then sieved into size fractions in accordance with AASHTO T27 or ASTM C136.

Finally, all pertinent information such as sample instructions, data sheets, and Safety Data Sheets can be found on the AASTHO re:source website in the “Data Sheets and Instructions” page. Thank you for your commitment to quality, and if you have any questions, please do not hesitate to contact us.

Published January 8, 2026

Are you confused about the differences between AASHTO re:source and AASHTO Product Evaluation & Audit Solutions? You’re not alone! These programs play a critical role in supporting your state’s transportation and construction projects, and understanding each program can limit confusion and help your state make the most of each program’s benefits.

This recorded webinar will help you gain clarity on both programs and the key differences between what they do and how your state can use them.

Hear directly from AASHTO staff as they cover:

• An overview of both programs
• Deliverables for each program
• Differences between each of the technical service programs.

Published October 27, 2025

Asphalt Mixture Ignition Oven Proficiency Samples 51 and 52 are currently being processed and packaged for shipping. The samples will be shipped to you on October 30, 2025.

Upon receipt, carefully open the box and check to see if the samples were damaged in shipment or if they are missing a component. If you are missing any of the components described in this video, or do not receive your samples by November 13, 2025, please contact us immediately.

All pertinent information such as sample instructions, data sheets, and Safety Data Sheets can be found on the on the AASTHO re:source website in the “Data Sheets and Instructions” page after the posted shipping date.

Published September 15, 2025

Slurry and Micro Surfacing Samples 17 and 18 have been packaged and are being shipped to your laboratory.

The official shipping date for these samples is September 18, 2025; however, your laboratory may receive the samples before that date.

Upon receipt of the box, carefully open it and check to see if the sample components were damaged in shipment or if one is missing. If you are missing any of the components described in this video, or do not receive your samples by October 2, 2025, please contact us immediately.

All pertinent information such as sample instructions, data sheets, and Safety Data Sheets can be found on the on the AASTHO re:source website in the “Data Sheets and Instructions” page after the posted shipping date.

Published August 25, 2025

The official shipping date for these samples is August 28, 2025, however your laboratory may receive the samples before that date. On that date the sample instructions and on-line data sheet will be released to the participants.

Upon receipt of the box, carefully open it and check to see if the sample components were damaged in shipment or if one is missing. If you are missing any of the components described in this video, or do not receive your samples by September 11, 2025, please contact us immediately.

All pertinent information such as sample instructions, data sheets, and Safety Data Sheets can be found on the on the AASTHO re:source website in the “Data Sheets and Instructions” page after the posted shipping date.

Published July 16, 2025

The samples will be shipped to you on July 24, 2025. Please note that Sample 7 and Sample 8 are shipped in separate boxes and will most likely arrive a few days apart.

All AASHTO Accredited laboratories must test the samples for each method that fall under the laboratory’s scope of accreditation. For specific requirements, please review the accreditation policy on PSP Participation which can be found on the AASHTO Accreditation Documents page on the AASHTO re:source website.

All pertinent information such as sample instructions, data sheets, and Safety Data Sheets can be found on the AASTHO re:source website in the “Data Sheets and Instructions” page.

Published May 12, 2025

The official shipping date for these samples is May 29, 2025; however, your laboratory may receive the samples before that date. On May 29, the sample instructions and on-line data sheet will be released to the participants.

Upon receipt of the boxes, carefully open them and check to see if the sample components were damaged in shipment or if one is missing. If you are missing any of the components described in this video, or do not receive your samples by June 12, 2025, please contact us immediately.

Published April 29, 2025

The official shipping date for these samples is May 22, 2025, however your laboratory may receive the samples before that date. On May 22, the sample instructions and on-line data sheet will be released to the participants.

Upon receipt of the box, carefully open it and check to see if the sample components were damaged in shipment or if one is missing. If you are missing any of the components described in this video, or do not receive your samples by June 5, 2025, please contact us immediately.

All pertinent information such as sample instructions, data sheets, and Safety Data Sheets can be found on the AASTHO re:source website in the “Data Sheets and Instructions” page after the posted shipping date.

Published April 15, 2025

See what attendees have said about the 2025 Technical Exchange conference.

Published March 11, 2025

Recorded March 11, 2025: Unlock the full potential of your TechEx experience with this engaging pre-event virtual session. Discover the keys to effectively navigating the AASHTO re:source Technical Exchange (TechEx). Dive into the TechEx experience with confidence and take advantage of every opportunity the event offers!

Learning Objectives:
1) Understand the event structure and relevant key sessions
2) Learn strategies to effectively network with other attendees
3) Utilize event resources and tools to maximize the TechEx experience

Published January 21, 2025

The samples will be shipped on January 23, 2025. All pertinent information such as sample instructions, data sheets, and Safety Data Sheets can be found on the AASTHO re:source website in the “Data Sheets and Instructions” page after the posted shipping date.

Published December 10, 2024

This exceptional event allows you to engage with peers in workshops, roundtables, and panel discussions. An ideal event for laboratory managers, quality managers, supervisors, technicians, and engineers. Exchange information, expand your professional network, and explore construction materials testing topics in sessions led by industry experts.

Published November 7, 2024

The samples will be shipped on November 14, 2024. All pertinent information such as sample instructions, data sheets, and Safety Data Sheets can be found on the AASTHO re:source website in the “Data Sheets and Instructions” page after the posted shipping date.

Published October 16, 2024

The samples will be shipped on October 17, 2024. All pertinent information such as sample instructions, data sheets, and Safety Data Sheets can be found on the AASTHO re:source website in the “Data Sheets and Instructions” page after the posted shipping date.

Published September 10, 2024

The official shipping date for these samples is September 12, 2024; however, your laboratory may receive the samples before that date. All pertinent information such as sample instructions, data sheets, and Safety Data Sheets can be found on the AASTHO re:source website in the “Data Sheets and Instructions” page after the posted shipping date.

Published August 27, 2024

The official shipping date for these samples is August 29, 2024. All pertinent information such as sample instructions, data sheets, and Safety Data Sheets can be found on the AASTHO re:source website in the “Data Sheets and Instructions” page after the posted shipping date.

Published July 2, 2024

The samples will be shipped to you on July 25, 2024. Please note that Sample 5 and Sample 6 are shipped in separate boxes and will most likely arrive a few days apart. All pertinent information such as sample instructions, data sheets, and Safety Data Sheets can be found on the AASTHO re:source website in the “Data Sheets and Instructions” page after the posted shipping date.

Published May 23, 2024

The official shipping date for these samples is May 30, 2024; however, your laboratory may receive the samples before that date. All pertinent information such as sample instructions, data sheets, and Safety Data Sheets can be found on the AASTHO re:source website in the “Data Sheets and Instructions” page after the posted shipping date.

Published May 9, 2024

Asphalt Mixtures Marshall Design (81/82), Asphalt Mixtures Hveem Design by California Kneading Compaction Samples (3/4), Asphalt Mixtures Hveem Design by Texas Gyratory Shear Compaction Samples (3/4), and Asphalt Mixtures Hveem Design by Colorado 100 mm (4-in) Gyratory Compaction Samples (3/4) will be shipped May 23rd, 2024. All pertinent information such as sample instructions, data sheets, and Safety Data Sheets can be found on the AASTHO re:source website in the “Data Sheets and Instructions” page after the posted shipping date.

Published February 28, 2024

Soil Classification and Compaction Proficiency Samples 189 and 190 will be shipped to you on March 7, 2024. All pertinent information such as sample instructions, data sheets, and Safety Data Sheets can be found on the AASTHO re:source website in the “Data Sheets and Instructions” page after the posted shipping date.

Published January 12, 2024

Aggregate Degradation Proficiency Samples 5 and 6 will be shipped on January 18, 2024. All pertinent information such as sample instructions, data sheets, and Safety Data Sheets can be found on the AASTHO re:source website in the “Data Sheets and Instructions” page after the posted shipping date.

Published January 11, 2024

Recorded January 11, 2024. At the end of the webinar, attendees will have a better understanding of all that goes on behind-the-scenes at AASHTO re:source in order to schedule an assessment at their facility, including what laboratories can do to ensure that scheduling their assessment is as smooth as possible.

Published November 8, 2023

Asphalt Mixture Ignition Oven Proficiency Samples 47 and 48 will be shipped on November 9, 2023. If you are missing any of the components described in this video, or do not receive your samples by November 23, 2023, please contact us immediately. All pertinent information such as sample instructions, data sheets, and Safety Data Sheets can be found on the AASTHO re:source website in the “Data Sheets and Instructions” page after the posted shipping date.

Published October 20, 2023

Recorded October 19, 2023: Senior Quality Analyst, Trudy Eckstine covers the basics of if an AASHTO re:source corporate QMS review is right for your laboratory.

By the end of this webinar attendees will be able to 1) identify if their laboratory is eligible for this program; 2) gain an understanding of the process; and 3) recognize the benefits of the program to their laboratory.

Published October 17, 2023

Asphalt Mixture Solvent Extraction Proficiency Samples 99 and 100 are currently being processed and packaged for shipping. The samples will be shipped to you on October 19, 2023. Upon receipt, carefully open the boxes and check to see if the samples were damaged in shipment or if they are missing a component. If you are missing any of the components described in this video, or do not receive your samples by November 2, 2023, please contact us immediately. All pertinent information such as sample instructions, data sheets, and Safety Data Sheets can be found on the AASTHO re:source website in the “Data Sheets and Instructions” page after the posted shipping date.

Published September 13, 2023

Slurry and Micro Surfacing Samples 13 and 14 have been packaged and are being shipped to your laboratory. The official shipping date for these samples is September 14, 2023; however, your laboratory may receive the samples before that date. Upon receipt of the box, carefully open it and check to see if the sample components were damaged in shipment or if one is missing. If you are missing any of the components described in this video, or do not receive your samples by September 28, 2023, please contact us immediately. All pertinent information such as sample instructions, data sheets, and Safety Data Sheets can be found on the AASTHO re:source website in the “Data Sheets and Instructions” page after the posted shipping date.

Published July 10, 2023

Aggregate Gradation and Gravity Proficiency Samples 3 and 4 are currently being processed and packaged for shipping. The samples will be shipped to you on July 20, 2023. Please note that Samples 3 and 4 are shipped in separate boxes and will most likely arrive a few days apart. All pertinent information such as sample instructions, data sheets, and Safety Data Sheets can be found on the AASTHO re:source website in the “Data Sheets and Instructions” page after the posted shipping date.

Published May 25, 2023

Asphalt Mixtures Gyratory Design Samples 55 and 56 are currently being processed and packaged for shipping. The official shipping date for these samples is June 1st, 2023; however, laboratories may receive the samples before that date. All pertinent information such as sample instructions, data sheets, and Safety Data Sheets can be found on the AASTHO re:source website in the “Data Sheets and Instructions” page after the posted shipping date (June 1, 2023).

Published May 10, 2023

Asphalt Mixtures Marshall Design (79/80), Asphalt Mixtures Hveem Design by California Kneading Compaction Samples (1/2), Asphalt Mixtures Hveem Design by Texas Gyratory Shear Compaction Samples (1/2), and Asphalt Mixtures Hveem Design by Colorado 100 mm (4-in) Gyratory Compaction Samples (1/2) are currently being processed and packaged for shipping. The samples will be shipped to you on May 25, 2023. All pertinent information such as sample instructions, data sheets, and Safety Data Sheets can be found on the AASTHO re:source website in the “Data Sheets and Instructions” page after the posted shipping date (May 25, 2023).

Published March 30, 2023

Performance Graded Asphalt Binder Proficiency Samples 271 and 272 are currently being processed and packaged for shipping. The samples will be shipped to you on April 6, 2023. All pertinent information such as sample instructions, data sheets, and Safety Data Sheets can be found on the AASTHO re:source website in the “Data Sheets and Instructions” page after the posted shipping date (April 6, 2023).

Published March 28, 2023

Viscosity Graded Asphalt Cement Proficiency Samples 271 and 272 are currently being processed and packaged for shipping. The samples will be shipped to you on March 30, 2023. All pertinent information such as sample instructions, data sheets, and Safety Data Sheets can be found on the AASTHO re:source website in the “Data Sheets and Instructions” page after the posted shipping date (March 30, 2023).

Published March 9, 2023

Soil Resistance Value Proficiency Samples 187 and 188 are currently being processed and packaged for shipping. The samples will be shipped to you on March 16th, 2023. Please note that Sample 187 and Sample 188 are shipped in separate boxes and will most likely arrive a few days apart. All pertinent information such as sample instructions, data sheets, and Safety Data Sheets can be found on the AASTHO re:source website in the “Data Sheets and Instructions” page after the posted shipping date (March 16, 2023).

Published March 9, 2023

California Bearing Ratio Proficiency Samples 187 and 188 are currently being processed and packaged for shipping. The samples will be shipped to you on March 16th, 2023. Please note that Sample 187 and Sample 188 are shipped in separate boxes and will most likely arrive a few days apart. All pertinent information such as sample instructions, data sheets, and Safety Data Sheets can be found on the AASTHO re:source website in the “Data Sheets and Instructions” page after the posted shipping date (March 16, 2023).

Published March 6, 2023

Learn more about the 2023 AASHTO re:source Technical Exchange at http://aashtoresource.org/events.

Published March 1, 2023

Soil Classification and Compaction Proficiency Samples 187 and 188 are currently being processed and packaged for shipping. The samples will be shipped to you on March 9, 2023. Please note that Sample 187 and Sample 188 are shipped in separate boxes and will most likely arrive a few days apart. All pertinent information such as sample instructions, data sheets, and Safety Data Sheets can be found on the AASTHO re:source website in the “Data Sheets and Instructions” page after the posted shipping date (March 9, 2023). /p>

Published February 16, 2023

Recorded February 16, 2023: AASHTO re:source Quality Manager, Tracy Barnhart covers the basics of internal audits.

By the end of this webinar, viewers will be able to (1) recognize the importance and benefits of conducting internal audits, (2) interpret the internal audit requirements in AASHTO R 18, (3) implement the five-step internal audit process within their own organization, and (4) discern the differences between internal audits and management reviews.

Published January 12, 2023

Aggregate Degradation Proficiency Samples 3 and 4 are currently being processed and packaged for shipping. The samples will be shipped to you on January 19th, 2023. Please note that Sample 3 and Sample 4 are shipped in separate boxes and will most likely arrive a few days apart. All pertinent information such as sample instructions, data sheets, and Safety Data Sheets can be found on the AASTHO re:source website in the “Data Sheets and Instructions” page after the posted shipping date (January 19, 2023).

Published November 18, 2022

Recorded November 17, 2022: In this small, Q & A style webinar, senior program staff was on-hand to answer attendees' accreditation-related questions, explaining more about the accreditation process and internal audit requirements.

Published November 7, 2022

Asphalt Mixture Ignition Oven samples 45 and 46 are currently being processed and packaged for shipping. All pertinent information such as sample instructions, data sheets, and Safety Data Sheets can be found on the AASHTO re:source website in the “Data Sheets and Instructions” page after the posted shipping date (November 10, 2022).

Published October 13, 2022

Asphalt Mixture Solvent Extraction Proficiency Samples 97 and 98 are currently being processed and packaged for shipping. All pertinent information such as sample instructions, data sheets, and Safety Data Sheets can be found on the on the AASTHO re:source website in the “Data Sheets and Instructions” page.

Published November 4, 2021

Recorded November 4, 2021: Proficiency Sample Program Manager, John Malusky, and Laboratory & Testing Manager, Ryan LaQuay share best practices and tips for laboratories to get the most out of the program.

After the webinar, attendees will be able to: (1) recognize how to make the most of individualized reports with performance charts to track testing results over time; and (2) describe ways the PSP can be used to ensure quality in your laboratory.

Published August 13, 2021

Recorded August 12, 2021: In the race to be assessed, laboratories can miss crucial steps in the process. Laboratory Assessment Program Assistant Managers, Mike Wagner and Sonya Puterbaugh, will guide attendees through the assessment process, step-by-step.

After this webinar, attendees will be able to: (1) understand what will occur during an AASHTO re:source assessment; (2) locate information on the AASHTO re:source website assist in preparation activities; and (3) identify key documents and information that should be sent to AASHTO re:source prior to the assessment.

Published May 13, 2021

Recorded May 13, 2021: Laboratory Assessment Program Manager, Maria Knake, gives attendees the tools needed to translate testing standards and specifications.

After this webinar, attendees will be able to: (1) locate the relevant information included on the title page and body of a standard; (2) recognize the difference between mandatory and non-mandatory information contained in the body of AASHTO and ASTM standards; and (3) discover methods of tracking changes to standards and how to implement them effectively.

Published February 22, 2021

Recorded February 18, 2021: AASHTO Accreditation Program Director, Brian Johnson, breaks down the most common sources of accreditation derailment and what laboratories can do to get back on track and stay there.

After the webinar, attendees will be able to: (1) identify critical elements of AASHTO Accreditation Policies that most often lead to suspensions, and (2) define the steps that can be taken to reduce the risk of accreditation suspension or revocation.

Published November 20, 2020

Recorded on November 19, 2020 and presented by Senior Quality Analysts, Trudy Eckstine and Amy Reed. This presentation covers how to interpret personnel requirements in ASTM quality system standards (C1077, C1093, D3666, D3740, and E329), including the use of external certification programs, as well as prepare internal certification exams that satisfy the AASHTO Accreditation Program requirements.

Published October 30, 2020

Recorded live on October 29, 2020 and presented by John Malusky, AASHTO re:source Proficiency Sample Program Director. This presentation covers how to locate proficiency sample data and general information on the AASHTO re:source website, as well as how to identify the components of typical proficiency sample reports.

Published September 25, 2020

Recorded live on September 24, 2020, and presented by AASHTO re:source Quality Manager, Tracy Barnhart, featuring extended Q & A.

This webinar covers how to: (1) recognize how management reviews differ from internal audits; (2) discover new strategies to effectively implement management reviews to achieve business goals; and (3) define the three primary outputs of a successful management review.

Published June 25, 2018

We’ve listened to your feedback and have released changes to the Accreditation Events system. These changes are designed to make it quicker and easier for you to respond to nonconformities. Some of the new features include:

• Faster load times
• Immediate access to all nonconformities within an applicable accreditation event
• Multiple documents can be uploaded at one time
• A drag-and-drop feature for easy document uploads

Take a tour of the new system with AASHTO Accreditation Program Director, Brian Johnson.

Published June 14, 2018

Brian Johnson explains how AASHTO Accreditation plays a vital role in public safety.

Published January 31, 2018

Tutorial on finding an accredited calibration laboratory for reference equipment that meets the requirements of AASHTO R 18. Tutorial includes reviewing accreditation and calibration certificates.

Published January 4, 2018

A quick demo of using the AASHTO Accreditation Directory to search for laboratories by location and standard.

Published April 10, 2017

Take a quick look at the preparation and packaging of our Soil Classification and Compaction proficiency samples. If you have questions about this sample, or our Proficiency Sample Program, email psp@aashtoresource.org.

Published April 10, 2017

Take a quick look at the preparation and packaging of our Asphalt Mixture Ignition Oven proficiency samples. If you have questions about this sample, or our Proficiency Sample Program, email psp@aashtoresource.org.

Published September 27, 2016

AASHTO Accredited laboratories undergo vigorous on-site, third party assessments. During these assessments, each test method is demonstrated in its entirety by the laboratory’s technical staff, and the testing apparatus associated with each test is evaluated. The assessment also includes a thorough review of the laboratory’s quality management system, including records of technician training and competency evaluations as well as equipment calibration and check records. Additionally, a detailed review of all accreditation requirements, including participation in the AASHTO re:source and CCRL proficiency sample programs, is conducted for each accredited laboratory at least once per year.

Published August 25, 2016

The Sample Program can be utilized as a useful tool for a company, association, or entity to monitor the quality of its services. Participating laboratories have the capability to:

• compare individual testing results to a large pool of results from their peers.
• verify both the testing apparatus and the operator under actual testing conditions. show evidence of conformance to testing procedures and protocols as set forth by specifying agencies or internal QA/QC programs.
• receive individualized reports with performance charts to track testing results over time.
• use the Extra Proficiency Sample Program (XPS) for training of technicians, testing or equipment verification, inter-laboratory studies, and for addressing accreditation issues related to proficiency sample testing.

Published August 25, 2016

AASHTO re:source’s Proficiency Sample Program (PSP) is the largest construction materials sample program in the world, with a customer base of approximately 3,000 testing laboratories. Samples are distributed to federal, state, independent, commercial, and research testing laboratories.

Published August 25, 2016

During on-site assessments, our expertly trained assessors observe a demonstration of each standard test method or practice by the laboratory’s technical staff, and the apparatus associated with each test is evaluated.

Published August 25, 2016

The AASHTO Accreditation Program (AAP) formally recognizes the competency of thousands of testing laboratories to perform specific tests on construction materials. In addition to being the largest accrediting body in the construction materials industry, the AAP is also the most widely accepted. AASHTO-Accredited laboratories have proven their commitment to quality and can set themselves apart from their competitors.

Published August 25, 2016

The AASHTO re:source Laboratory Assessment Program (LAP) provides on-site assessments of laboratories that perform testing of materials used for construction and the preservation of roads, bridges, and vertical infrastructure. Participating laboratories include state DOT’s and other government laboratories, universities, research facilities, material producers, and commercial testing laboratories. AASHTO re:source’s rigorous on-site assessments are a critical step in obtaining and maintaining accreditation through AASHTO.

Published August 25, 2016

Learn more about AASHTO re:source and our programs.