Concrete Laboratory Testing Technician—Level 2

2026 Laboratory Level 2 Scheduling Changes:

Shared Sessions
In an effort to maximize our available space, to more efficiently utilize our Supplemental Examiners, and to better accommodate testing needs, all ACI Laboratory Level 2 exam sessions will occur in tandem with other exams. These sessions will be referred to as Advanced Lab sessions and will have a shared capacity across four (4) exams: Aggregate Level 2 (Agg 2), Aggregate Base (Agg Base), Laboratory Level 2 (Lab 2), and Self-Consolidating Concrete (SCC). Examinees will be allowed to register for up to 2 different exams on the same date if desired.

2026 Advanced Lab Dates [Not Yet Open for Registration]:

*This is the anticipated schedule for 2026. There is a possibility that some dates or locations could change as we finalize this schedule and finish securing locations.*

Scope and Knowledge:

This program requires demonstration of the knowledge and hands-on skills covered on the Job Task Analysis (JTA): 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
  [This standard also requires the knowledge and ability to perform ASTM C143/C143M (Slump), C173/C173M and C231/C213M (Air Content), C138/C138M (Unit Weight), and 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:

1. Have at least one year (2000 hours) of approved work experience or a combination of work experience and education, AND
2. Hold current certification as an ACI Concrete Laboratory Testing Technician—Level 1, and
3. Obtain a passing grade on the ACI written examination, AND
4. Successfully complete the ACI performance examination.

The two-hour written examination is open-book and consists of approximately 75 multiple-choice questions. There are between eight and 12 questions on each of the documents.

To pass the written examination, both of the following conditions must be met:

1. At least 60% correct for each of the required standards, AND
2. A minimum score of 70% overall.

The performance examination is closed-book and requires actual demonstration of ASTM Practices C192/C192M and C157/C157M. The examinee is judged on his/her ability to correctly perform all of the required steps for each standard procedure.

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.