ASTM C349
Full Name
ASTM C349 – Standard Test Method for Compressive Strength of Hydraulic-Cement Mortars (Using Portions of Prisms Broken in Flexure)
Scope
ASTM C349 covers the determination of the compressive strength of hydraulic cement mortars. This is achieved by testing portions of prisms that have been previously tested for flexural strength according to ASTM C348.
Specifically, the standard addresses:
- Specimen preparation: utilizes the broken portions of prisms from the flexural strength test (ASTM C348) as modified cubes for compressive strength testing. The prisms are prepared according to ASTM C348, and the broken portions that meet the dimensional requirements of ASTM C349 are used.
- Test procedure: describes the procedure for applying compressive load to the specimen until failure, similar to ASTM C109.
- Calculation of compressive strength: provides the formula for calculating the compressive strength of the mortar based on the maximum load and the cross-sectional area of the specimen.
- Data analysis and reporting: details the information that should be included in the test report, such as the average compressive strength, individual specimen results, and any deviations from the standard procedure.
ASTM C349 is primarily used for:
- Combined testing: efficiently obtaining both flexural and compressive strength data from the same set of specimens, saving time and materials.
- Research and development: evaluating the compressive behavior of hydraulic cement mortars, particularly in relation to their flexural strength.
It is important to note that ASTM C349 is not intended for routine quality control testing. Instead, it is primarily used for research and development purposes, where a comprehensive understanding of both flexural and compressive strength is required.
ASTM C349 Accredited Laboratory
Applied Testing & Geosciences, LLC is accredited for performing tests using the ASTM C349 standard.
Contact us today to learn more about our testing capabilities and how we can support your business.
Resources
Keywords
compressive strength; hydraulic-cement mortar; broken prism; flexure; testing machine; modified cube