Concrete QC Lab Technician – Strength & Materials Testing

CalPortland; California (MO); Hybrid; USD 37,000 - 44,000; Full time

Benefits offered by this job

Low-cost premiums

Company-paid life/AD&D insurance

Company-paid short-term disability

401k/Company Funded Pension Program

Job summary

CalPortland is seeking a Quality Control Lab Technician to perform quality control testing and reporting duties in the concrete and concrete aggregates testing laboratory. The role requires maintaining safety and accuracy in sampling and testing according to ACI/ASTM standards.

The position involves collecting samples, running tests (slump, temperature, density, air content, cylinder strength), recording results in our database, and communicating findings to production teams.

Qualifications

• Must have a High school diploma/GED.
• DOT Soils and Aggregate Certification required.
• ACI Strength Testing Certification required.
• ACI Aggregate Testing Technician Level 1 required or equivalent.

Responsibilities

• Perform all aspects of stripping, curing, capping, and compression testing in the concrete and concrete aggregates testing lab.
• Report concrete cylinder strength test results according to ACI standards.
• Process aggregate field test samples and reduce to the appropriate testing size.
• Concrete testing to include temperature, slump, density, air content, cylinders, etc.
• Perform gradation tests on rock and sand samples along with additional tests such as durability, moisture, cleanliness value, #200 wash, sand equivalency, specific gravities, and absorptions.
• Enter test results daily into a computer database and distribute reports to appropriate individuals.
• Gather cement, fly ash, and aggregate materials at production plants in preparation for concrete trial batch tests.
• Accurately weigh up each material as listed in the trial batch sheets and set up equipment for trial testing.
• Conduct scheduled calibrations on test equipment per the calibration schedule.
• Always maintain work area and office equipment in a safe and clean condition.
• Troubleshoot job problems and handle job complaints (out-of-spec aggregates, low breaks, Schmidt hammer, cracking, coring).
• Analyze aggregate and strength reports and identify trends.
• Work directly with suppliers, vendors, and internal customers, as necessary.

Skills

English proficiency

Education

High school diploma/GED

DOT Soils and Aggregate Certification

ACI Strength Testing Certification

ACI Aggregate Testing Technician Level 1

Tools

Microsoft Office Suite

SAP

Job description

CalPortland is seeking a Quality Control Lab Technician to perform quality control testing and reporting duties in the concrete and concrete aggregates testing laboratory. The role requires maintaining safety and accuracy in sampling and testing according to ACI/ASTM standards.

The position involves collecting samples, running tests (slump, temperature, density, air content, cylinder strength), recording results in our database, and communicating findings to production teams.