Concrete Strength Testing Technician Job at Colorado Ready Mixed Concrete Associ

Open for Registration 11.06.2025 (Denver) Open for Registration 12.04.2025 (Denver) - This is the last Strength exam scheduled for 2025. Registration Link Strength EXAM Registration Notice These are EXAM sessions only—no training or review will be provided.

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 laboratory procedures related to the determination of concrete compressive and flexural strength.

2026 Strength Scheduling Changes:

Shared Sessions
In an effort to maximize our available space and to more efficiently utilize our Supplemental Examiners, all ACI Strength exam sessions will occur in tandem with another exam. The listed capacity for these dates is the total capacity for the day which will be shared across both exams. Examinees CANNOT register for more than one exam on the same date.

2026 Strength Exam 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.*

Exam Date

Location

Exam Capacity

Registration Opens

Notes

02.05.2026 Denver 30 Total 12.15.2026 Shared Session—Strength & Aggregate 1

02.19.2026 Durango 30 Total 01.02.2026 Shared Session—Strength & Field 1

03.10.2026 Denver 30 Total 01.15.2026 Shared Session—Strength & Aggregate 1

03.12.2026 Grand Junction 25 Total 01.15.2026 Shared Session—Strength & Aggregate 1

04.21.2026 Denver 30 Total 03.02.2026 Shared Session—Strength & Aggregate 1

05.21.2026 Denver 30 Total 04.01.2026 Shared Session—Strength & Aggregate 1

09.22.2026 Denver 30 Total 08.03.2026 Shared Session—Strength & Aggregate 1

10.15.2026 Denver 30 Total 09.01.2026 Shared Session—Strength & Aggregate 1

11.05.2026 Denver 30 Total 09.15.2026 Shared Session—Strength & Aggregate 1

12.03.2026 Denver 30 Total 10.15.2026 Shared Session—Strength & Aggregate 1

Scope and Knowledge:

This program requires demonstration of the knowledge and hands-on skills covered on the Job Task Analysis (JTA): JTA for ACI Certification of Concrete Strength Testing Technician . 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 ASTM practices and test methods:

• C617/C617M – 15—Capping Cylindrical Concrete Specimens
• C1231/C1231M – 15—Unbonded Caps for Concrete Cylinders
• C39/C39M – 18—Compressive Strength of Cylindrical Concrete Specimens
• C78/C78M – 18—Flexural Strength of Concrete

Certification Requirements:

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 eight questions on each of the practices and test methods. To pass the written examination, both of the following conditions must be met:

• At least 60% correct for each of the required practices and test methods, and
• A minimum score of 70% overall.

The performance examination is also closed-book and requires actual demonstration of the required practices and test methods. The examinee is judged on his/her ability to correctly perform all of the required steps for each procedure. Certification is valid for a period of five years from the date of successfully completing all requirements. Recertification requires successful completion of both the written and performance examinations.

Transfer and Cancellation requests must be received with no less than 5 business days’ notice before the date of the exam in order to be eligible for a change or refund. In order to request a transfer or cancellation, the request must be emailed to aci@coloradocaa.org ; verbal requests will not be considered.

Request to be a Supplemental Examiner aka “Proctor”

ACI certifications provided through the CRMCA continue because of the volunteers assisting during each session. These active volunteers are the Supplemental Examiners, or “Proctors”, who administer the individual performance exam stations for various certifications and active Proctors are always needed. CRMCA members who are ACI certified are encouraged to volunteer as available. Please contact CRMCA’s JT Mesite to be included in the Proctor Distribution List and gain access the ACI Supplemental Examiner Training.

Proctor volunteers’ companies are eligible to receive credit towards future certifications. Proctors are approved by the acting Examiner of Record (EOR) and CRMCA has the right to decline individuals as Proctors or the use of Proctor credits.