Concrete Laboratory Testing Technician Level 2
Definition
A Concrete Laboratory Testing Technician—Level 2 is an individual who has demonstrated the knowledge and ability to properly perform, record, and report the results of advanced laboratory procedures for aggregates and concrete.
Scope and Knowledge
This program requires demonstration of the knowledge and hands-on skills covered in the Job Task Analysis (JTA) for ACI Laboratory Testing Technician - Level 2.
The JTA is a detailed list of specific points of knowledge and skills that may be included in the examinations for this ACI Certification program. ACI urges candidates to use the JTA to prepare for the certification exams.
The program requires a working knowledge of the following ACI and ASTM documents:
- ACI 214R-11 – Evaluation of Strength Test Results of Concrete*
- ACI 211.1-91 – Selecting Proportions for Concrete*
- ASTM C192/C192M – 16a – Making and Curing Concrete Test Specimens in the Laboratory
- Also requires knowledge and ability to perform:
- ASTM C143/C143M (Slump)
- ASTM C173/C173M and C231/C213M (Air Content)
- ASTM C138/C138M (Unit Weight)
- ASTM C1064/C1064M (Temperature)
- ASTM C470/C470M – 15 – Molds for Forming Concrete Test Cylinders Vertically*
- ASTM C496/C496M – 11 – Splitting Tensile Strength of Cylindrical Concrete Specimens*
- ASTM C42/C42M – 16 – Obtaining and Testing Drilled Cores and Sawed Beams of Concrete*
- ASTM C157/C157M – 08(2014) – Standard Test Method for Length Change of Hardened Hydraulic-Cement Mortar and Concrete
*Written exam only
Certification Requirements
ACI will grant certification only to those applicants who meet all of the following requirements:
- Have at least one year (2000 hours) of approved work experience or a combination of work experience and education, AND
- Hold current certification as an ACI Concrete Laboratory Testing Technician - Level 1 , AND
- Obtain a passing grade on the ACI written examination, AND
- Successfully complete the ACI performance examination.
Written Examination
- Open-book exam lasting two hours.
- Consists of approximately 75 multiple-choice questions.
- Each document has between 8 and 12 questions.
Passing Criteria:
- Score at least 60% on each required standard, AND
- A minimum overall score of 70%.
Performance Examination
- A closed-book exam requiring actual demonstration of:
- ASTM Practice C192/C192M
- ASTM Practice C157/C157M
- Examinees are judged on their ability to correctly perform all required steps for each standard procedure.
Certification Validity & Recertification
Certification is valid for a period of five years from the date of successfully completing all requirements.
Recertification requires fulfillment of the ACI Concrete Laboratory Testing Technician - Level 1 requirements and successful completion of both the written and performance examinations.
