ANNOUNCEMENTS
update: 07/16/2024
1. Compressive Strength (CM) and Field Density (FD) certifications will no longer be offered. To be qualified to test Compressive Strength of Concrete, take Concrete Strength. To be qualified to test Field Density of Soil and Asphalt, take Soil Density.
Update: 11/03/2023
- Aggregate Technician is now divided into two parts, AT - part 1, and AT - part 2. There will be 2 manuals, 2 exams, 2 proficiency tests. This certification will last 3 days for initial testing. The tester will need to pass both part AT-1 and AT-2 to receive certification for AT.
- Aggregate Technician Renewal, a tester will take AT - part 1 exam in the morning and AT - part 2 exam in the afternoon. Both exams are needed to get renewal certification for AT.
The purpose of the TCP is to ensure the quality of materials incorporated into MoDOT projects by supporting proper and uniform procedures among individuals responsible for the sampling and acceptance testing (including IAS and FAST) of certain non-manufactured materials used in transportation construction projects. These materials are aggregates, soil, concrete and asphalt.
All technicians who perform, or are required by the FHWA to witness, such sampling and testing shall be deemed as qualified by virtue of successfully completing the requirements of the TCP for that specific technical area. They will be identified by a certification card issued by the certifying authority. The card will note the expiration date and each certification level. Any individual who has not been qualified is not eligible to perform these functions on MoDOT projects on the National Highway System.
What Certification Levels do I need?
- Specifics about which tests are certified
MANUALS
- 2025 Bituminous Technician - BT
- 2025 Soil Density - SD
- 2025 Concrete Field CF
- 2025 Concrete Strength - CS
- 2025 HMA Aggregate (Consensus Tests) - HAT
- 2025 Superpave QC/QA - SP
- 2025 Tensile Strength Ratio - TSR
- 2025 Binder Ignition - BI
- 2025 International Roughness Index (IRI) Profile
- 2025 Plasticity Index - PI
- 2025 Aggregate Technician Part 1 - AT
- 2025 Aggregate Technician Part 2 - AT
CERTIFICATION WORKBOOKS - COMING SOON
These manuals are Adobe downloads of the TCP manuals for use to prepare for certification, personal review, or reference.
A bound version of each manual will be provided to you at the time you attend a class, and is yours to keep. Every effort is being made to keep manuals as up-to-date as possible. Be aware that specifications and/or test methods change frequently and the information in these manuals may not be current.
For submitting request forms or for additional information contact:
MoDOT Construction and Materials Division
1617 Missouri Boulevard
Jefferson City, MO 65109
phone 573-522-2742
e-mail at TechCert@modot.mo.gov