Division of Materials and Tests

TDOT Certification:

Concrete Technician Certification Program


Course Title:  Concrete Certified Field Testing Technician Course

Certification Level:  Grade I

Course Description

The TDOT Concrete Field Testing Technician is an individual who has demonstrated the knowledge and ability to properly perform and record the results of seven basic field tests on freshly-mixed concrete as well as perform calculations necessary to report the data from each test.

Scope of Course

The program requires a working knowledge of the following AASHTO/ASTM Standards:

AASHTO T 309/ASTM C 1064 - Temperature of Freshly-Mixed Portland Cement Concrete

AASHTO T 141/ASTM C 172 - Sampling Freshly-Mixed Concrete

AASHTO T 119/ASTM C 143 - Slump of Hydraulic Cement Concrete

AASHTO T 121/ASTM C 138 - Unit Weight, Yield, and Air Content (Gravimetric) of Concrete

AASHTO T 153/ASTM C 231 - Air Content of Freshly-Mixed Concrete by the Pressure Method

AASHTO T 196/ASTM C 173 - Air Content of Freshly-Mixed Concrete by the Volumetric Method

AASHTO T 23/ASTM C 31 - Making and Curing Concrete Test Specimens in the Field


Supervisor's approval and written recommendation

A basic understanding of concrete testing, placement, and inspection

Familiarity with applicable TDOT Standard Specifications, Supplemental Specifications, and Special Provisions

Mathematical skills through basic algebra

Certification Requirements

TDOT will grant certification to those applicants who meet both of the following requirements:

1) A passing grade on the written examination; and

2) Successful completion of the performance examination.

The one-hour written examination is "open-book" and consists of 48 multiple choice questions. There are five (5) to ten (10) questions on each of the AASHTO/ ASTM Standards. To pass the written examination, both of the following conditions must be met:

(a) at least 60% correct for each of the required standards; and

(b) a minimum score of 70% overall.

The performance examination takes place immediately after the written examination.  The performance examination requires that the student demonstration the knowledge and ability to perform each of the seven required standards.  Evaluators may ask questions during the performance of the tests in order to determine more accurately the students knowledge of the standards.  The student is evaluated on his ability to correctly perform and describe all of the required procedures for each standard.

Recertification is necessary every five (5) years and requires that the technician attend the classes and successfully complete the written and performance examinations.

NOTE*:  Cheating on any level WILL ABSOLUTELY NOT BE TOLERATED and will result in immediate expulsion from the course and a notification of supervisors and directors.

The use of cell phone calculators WILL NOT be permitted during exam.

Study Materials

Text:  TDOT Certified Concrete Field Testing Technician - Grade I.  This is a study guide for the student covering information and procedures on the standards and test methods listed above. The manual will be provided by the instructor on the day of the course.

Presentation slides covering the following test methods will be presented in class:

AASHTO T 309/ ASTM C 1064

AASHTO T 141/ ASTM C 172

AASHTO T 119/ ASTM C 143

AASHTO T 121/ ASTM C 138

AASHTO T 153/ ASTM C 231

AASHTO T 196/ ASTM C 173

TDOT Standard Specifications for Road and Bridge Construction - Sections 501, 604 and 903

Calculator May be used for Examination

How to Register

A Valid Photo ID must be presented upon check-in

A light lunch will be provided for each class

Regional Locations and Start Times for Training Classes

Region 1
  Knoxville Region 1 Auditorium
  7345 Region Lane
  Knoxville, TN 37914
  Phone: 865.594.2400

8:30 am Eastern Standard Time

Region 2
  Chattanooga Region 2 Auditorium
  4005 Cromwell Rd. Chattanooga, TN 37421
  Phone: 423.892.3430

8:30 am Eastern Standard Time

Region 3 
  Nashville Region 3 Auditorium
  6601 Centennial Blvd.
  Nashville, TN 37243
  Phone: 615.350.4100   

8:30 am Central Standard Time

Region 4
  Jackson Region 4 Auditorium
  300 Benchmark Place
  Jackson, TN 38301
  Phone: 731.935.0100

8:30 am Central Standard Time