CMOD testing measures the Crack Mouth Opening Displacement of concrete beams to evaluate the post-crack toughness and residual tensile strength of fiber-reinforced concrete. This test helps designers and engineers understand how concrete behaves after cracking and whether it meets project-specific performance requirements.

Why CMOD testing matters:
This test provides reliable insight into the structural behaviour of fiber-reinforced mixes. It supports design verification, performance-based specifications, quality control for specialty concrete, and compliance with engineering requirements across commercial, industrial, tunneling, and infrastructure projects.

What we test:
We perform CMOD testing on concrete beams produced from fiber-reinforced concrete mixes used in slabs, tunnels, suspended slabs, pavements, underground structures, and specialty precast elements.

Standards followed:
Testing is completed in accordance with EN 14651 (Test Method for Metallic Fibre Concrete), along with project-specific requirements and engineer-issued specifications.

Our setup and equipment:
We use a dedicated CMOD testing frame with digital displacement measurement, precision load controls, and calibrated equipment. The setup captures load-CMOD curves, elastic and post-crack behaviour, and residual strength values.

Who this test is for:
Engineers, designers, contractors, ready-mix suppliers, tunnel contractors, and specialty concrete producers who need performance-based verification of FRC mixes. This includes commercial and high-rise projects, municipal work, transportation infrastructure, tunneling, and industrial slabs.

Where we provide CMOD testing:
We offer CMOD testing throughout British Columbia and across Canada and the United States. Samples can be delivered directly to our Coquitlam laboratory or coordinated through project teams.

Sample handling and testing workflow:
• Drop-off or coordinate pickup
• Condition and cure according to project requirements
• Prepare beams
• Perform CMOD testing
• Provide full report with load-CMOD curve, toughness indices, residual strength values, and compliance summary

Reporting:
All test results include charts, numerical results, acceptance comparisons, and clear explanations for engineers and project decision-makers.

To schedule CMOD testing or request pricing, call us at (604) 544-0540 or send your mix details and project specifications through our request form.