QUALITY CONTROL
Our onsite laboratories allow us to constantly monitor our products and adjust for variations in processing the natural resource, thereby maintaining product quality & specifications. The laboratories are regularly certified by the Canadian Council of Independent Laboratories (CCIL) as Type C labs. Yearly proficiency testing is carried out at each of our certified labs to meet the requirements of the Ministry of Transportation (MTO) & CCIL. If you have any questions about our processes or certifications feel free to contact our Quality Control Department.
Gradations
(Sieve Analysis) - The determination of the particle size distribution of fine and coarse aggregates. We typically produce our products to meet the OPSS gradation requirements. See Below for the gradation requirements by material category.
Material Category
Specification
Hot Mix Asphalt Aggregates
Surface Treatment Aggregates
Physicals
Testing performed to determine the physical characteristics of fine and coarse aggregates. The chart below shows some of the typical tests performed on the aggregates. The application helps dictate which physical tests are required for a product.
Test Name
LS Specification
CSA Specification
Materials finer than 75um by Washing
LS 601
A23.2-5A
Relative Density & Absorption of Course Aggregate
LS 604
A23.2-12A
Soundness of Aggregates by use of Magnesium Sulphate
LS 606
A23.2-9A
Determination of Percent Crushed Particles
LS 607
Determination of % Flat & Elongated Particles
LS 608
A23.2-13A
Petrographic Analysis of Course Aggregate
LS 609
Freezing and Thawing of Course Aggregate
LS 614
A23.2-24A
Micro-Deval Abrasion (Coarse Aggregate)
LS 618
A23.2-29A
Micro-Deval Abrasion (Fine Aggregate)
LS 619
Accelerated Mortar Bar Expansion
LS 620
A23.2-25A
Determination of Amount of Asphalt Coated Particles
LS 621
Determination of Amount of Contamination
LS 630