ASTM E761
Full Name
ASTM E761 – Standard Test Method for Compressive Strength of Sprayed Fire-Resistive Material Applied to Structural Members
Scope
ASTM E761 outlines a standardized procedure for determining the compressive strength of SFRMs. This test method is crucial for evaluating the ability of SFRMs to maintain their structural integrity under load, especially in fire conditions.
Key aspects of the standard include:
- Specimen preparation: ASTM E761 details the creation of test specimens, typically cylindrical cores extracted from a cured SFRM application on a structural element or from SFRM applied to a substrate under controlled laboratory conditions.
- Testing procedure: the standard specifies the use of a compression testing machine to apply a steadily increasing compressive load to the specimen until failure.
- Data analysis: ASTM E761 guides the calculation of compressive strength, which is determined by dividing the maximum load at failure by the original cross-sectional area of the specimen.
The compressive strength obtained through this test method provides valuable information about the material’s ability to withstand:
- Mechanical impact: ensures the SFRM won’t crumble or dislodge under normal building usage.
- Debris impact: assesses the material’s resistance to falling debris during a fire event.
- Structural loads: determines if the SFRM can contribute to the overall load-bearing capacity of the structural member.
Compliance with ASTM E761 is critical for:
- SFRM manufacturers: demonstrates product quality and performance to potential buyers.
- Building code officials: ensures materials used in construction meet safety standards.
- Fire protection engineers: provides data for designing effective fire protection systems.
ASTM E761 Accredited Laboratory
Applied Testing & Geosciences, LLC is accredited for performing tests using the ASTM E761 standard. We are committed to providing our clients with the technical expertise and support they need to ensure their products meet industry standards and regulatory requirements.
Contact us today to discuss your specific testing needs and receive a customized quote.
Resources
Keywords
compressive strength; sprayed fire-resistive material; structural members; test method; fire-resistive materials; rigid substrate; laboratory procedure; test specimen; compressive load; deformation; drying oven; constant weight; test report; average compressive strength; standard deviation; coefficient of variation; statistical analysis; acceptance criteria; conformance; nonconformance