ACI Concrete Strength Testing Technician General Information
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
The program requires a working knowledge of the following ASTM Standards:
- C617 - Capping Cylindrical Concrete Specimens
- C1231/C1231M - Unbonded Caps for Concrete Cylinders
- C39/C39M - Compressive Strength of Cylindrical Concrete Specimens
- C78 - Flexural Strength of concrete
Certification Requirments for Concrete Strength Testing Technician
ACI will grant certification only to those applicants who meet both of the following requirements:
- A 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 8 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 five (5) years*, and requires successful completion of both the written and performance examinations.
* Certifications initiated prior to January 1, 2008 were granted certification for six (6) years. Due to a policy change, however, individuals initiating the certification process January 1, 2008 and later will be certified for five (5) years.
Study Materials for Concrete Strength Testing Technician
Go to the ACI Bookstore on this website to order and/or obtain current pricing on any items listed below. Order Code: CP1911
Title: Technician Workbook for ACI Certification of Concrete Strength Testing Technician
Description: This workbook contains information about the ACI Concrete Strength Testing Technician certification program, study questions, sample checklists, and a practice exam as well as reprints of all of the resource materials referenced by the certification examinations. The CSTT program covers the following ASTM Standards: C39, C78, C617, and C1231.
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