The Illinois Chapter of the American Concrete Institute (ACI) announced its ACI Laboratory Technician Certification Program: Concrete Strength Testing Technician, to be held on Thursday, Sept. 25 and Friday, Sept. 26 at CTLGroup, Skokie, Ill. Room is still available. Register online at

A Concrete Strength Testing Technician is an individual who has demonstrated the knowledge and ability to properly perform, record, and report the results of four basic ASTM laboratory procedures related to the determination of concrete compressive and flexural strength.

Scope and knowledge

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

  • C 617 - Capping Cylindrical Concrete Specimens
  • C 1231 - Unbonded Caps for Concrete Cylinders
  • C 39 - Compressive Strength of Cylindrical Concrete Specimens
  • C 78 - Flexural Strength of concrete

Certification requirements

ACI will grant certification only to those applicants who meet both of the following requirements: passing grade on the ACI written examination; and successful completion of the ACI performance examination.

The one-hour written examination is "closed book" and consists of approximately 40 multiple-choice questions. There are at least eight questions on each of the 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 is also "closed book" and requires actual demonstration of the required ASTM Standards. The examinee is judged on his/her ability to correctly perform or describe all of the required procedures for each standard.

Recertification is necessary every six years for certifications initiated prior to Jan. 1, 2008, and requires successful completion of both the written and performance examinations. Individuals initiating the certification process Jan. 1, 2008 and later will be eligible for five-year certifications.

Visit ACI's Web site for more information or to register, or call 866-560-2378.