Open for Registration11.05.2025 (Denver)Open for Registration11.19.2025 (Denver) Open for Registration12.03.2025 (Denver)Open for Registration12.10.2025 (Denver) - This is the last Field 1 exam scheduled for 2025.Registration LinkField 1 EXAM RegistrationNoticeThese are EXAM ONLY sessions—No training or review will be available at the exam.
A CONCRETE FIELD TESTING TECHNICIAN—GRADE I is an individual who has demonstrated the knowledge and ability to properly perform and record the results of seven basic field tests on freshly mixed concrete.
2026 Field 1 Scheduling Changes:
In an effort to more efficiently utilize our Supplemental Examiners, the CRMCA has changed how some ACI Exam Sessions will be scheduled in 2026. 2026 will have fewer overall exam dates but greater overall capacity so we can accommodate more registrants than ever before.
Staggered Start Sessions
Field 1 exams at the Denver location will follow a staggered start schedule. These sessions will be split into two Blocks:
- Block A
- Start Time: 7:30am
- Capacity: 15
- Full Exam Registrations: We ask that examinees seeking RECERTIFICATION register for Block A
- Retest Registrations: Written Retests Only
- Block B
- Start Time: 10:30am
- Capacity: 30
- Full Exam Registrations: We ask that examinees seeking certification for the FIRST-TIME register for Block B
- Retest Registrations: Performance Retests Only
Shared Sessions
All ACI Strength exam sessions will occur in tandem with another exam including one date that will be shared with Field 1. The listed capacity for this date is the total capacity for the day which will be shared across both exams. Examinees CANNOT register for more than one of these exams on the same date.
2026 Field 1 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 |
|---|---|---|---|---|
| 01.14.2026 | Denver | 45 Total | 12.01.2025 | Staggered Start Session |
| 02.03.2026 | Denver | 45 Total | 12.15.2025 | Staggered Start Session |
| 02.19.2026 | Durango | 30 Total | 01.02.2026 | Shared Session—Strength & Field 1 |
| 02.25.2026 | Colorado Springs | 20 | 01.02.2026 | |
| 03.11.2026 | Grand Junction | 25 | 01.15.2026 | |
| 03.24.2026 | Colorado Springs | 12 | 02.02.2026 | |
| 03.25.2026 | Denver | 45 Total | 02.02.2026 | Staggered Start Session |
| 04.08.2026 | Denver | 45 Total | 02.16.2026 | Staggered Start Session |
| 04.22.2026 | Denver | 45 Total | 03.02.2026 | Staggered Start Session |
| 04.23.2026 | Glenwood Springs | 20 | 03.02.2026 | |
| 04.24.2026 | Fort Collins | 20 | 03.02.2026 | |
| 05.06.2026 | Denver | 45 Total | 03.16.2026 | Staggered Start Session |
| 05.20.2026 | Denver | 45 Total | 04.01.2026 | Staggered Start Session |
| 06.10.2026 | Colorado Springs | 12 | 04.15.2026 | |
| 08.12.2026 | Colorado Springs | 20 | 07.01.2026 | |
| 09.03.2026 | Denver | 45 Total | 07.15.2026 | Staggered Start Session |
| 09.09.2026 | Denver | 45 Total | 07.15.2026 | Staggered Start Session |
| 09.23.2026 | Denver | 45 Total | 08.03.2026 | Staggered Start Session |
| 09.24.2026 | Grand Junction | 25 | 08.03.2026 | |
| 09.25.2026 | Greeley | 15 | 08.03.2026 | |
| 10.13.2026 | Denver | 45 Total | 09.01.2026 | Staggered Start Session |
| 11.04.2026 | Denver | 45 Total | 09.15.2026 | Staggered Start Session |
| 12.02.2026 | Denver | 45 Total | 10.15.2026 | Staggered Start Session |
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 Field Testing Technician—Grade I
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 test methods and practices:
- C1064/C1064M – 17—Temperature of Freshly Mixed Hydraulic-Cement Concrete
- C172/C172M – 17—Sampling Freshly Mixed Concrete
- C143/C143M – 15a—Slump of Hydraulic-Cement Concrete
- C138/C138M – 17a—Density (Unit Weight), Yield, and Air Content (Gravimetric) of Concrete
- C231/C231M – 17a—Air Content of Freshly Mixed Concrete by the Pressure Method
- C173/C173M – 16—Air Content of Freshly Mixed Concrete by the Volumetric Method
- C31/C31M – 19—Making and Curing Concrete Test Specimens in the Field
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 55 multiple-choice questions. There are between five and ten questions on each of the ASTM test methods and practices. To pass the written examination, BOTH of the following conditions must be met:
- At least 60% correct for each of the required test methods and practices; AND
- A minimum score of 70% overall.
The performance examination is also “closed book” and requires actual demonstration of six of the required test methods and practices plus a verbal description of Practice C172/C172M (sampling). The examinee is judged on his/her ability to correctly perform (or describe, where allowed) 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.
Links & Resources
Transfers & Cancellations
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.