The Applied Technical Services Family of Companies (ATS FoC) conducts mortar testing in accordance with ASTM C270. This standard defines mortar types for unit masonry, sets proportioning rules, and outlines performance evaluation methods. It specifies mortar types including N, S, M, and O, each with designated uses and minimum strength requirements. Our technicians follow ASTM C270 for mix design review, sampling, and routine testing to ensure mortar meets project specifications and building codes.
What Are the ASTM C270 Requirements for Mortar?
ASTM C270 classifies mortar by type and specification method, allowing specification by volume proportions or compressive strength. Acceptable materials include:
- Portland cement
- Masonry cement
- Hydrated lime
- Aggregates
The standard restricts certain admixtures and supplementary cementitious materials. The property specification method requires preparing mortar prisms or cubes and testing compressive strength at specified ages to confirm minimum values for the selected type. ASTM C270 references related test methods and sampling procedures to ensure consistent results.
About Our Capabilities and Credentials
Our concrete testing laboratory conducts petrographic examination, aggregate lithology identification, mineral characterization, and evaluation of potentially deleterious constituents in accordance with ASTM C295. We provide detailed analysis of aggregate composition, texture, weathering, alteration, and other factors affecting concrete performance. Our laboratory uses calibrated equipment and controlled procedures to ensure reliable results. Our quality system includes documented quality-control procedures and laboratory accreditation, including ISO/IEC 17025 within the accredited scope. We deliver clear technical reports and expert interpretations to support informed material selection and quality control decisions.
How Can ASTM C270 Testing Verify Mortar Compliance?
Technicians prepare representative mortar samples from the job site or production batches, cure them under controlled conditions, and test compressive strength using standardized procedures. Results are compared to specified type or property limits. Additional checks verify material proportions, measure consistency, and confirm that constituent materials meet referenced standards. A comprehensive test program identifies nonconforming batches, supports corrective actions such as mix redesign or process adjustments, and provides traceable documentation for project records.
Contact Us
Please submit an online inquiry or call +1 (888) 287-5227 to schedule sampling, request a quote, or discuss a customized ASTM C270 testing program.

