ASTM D4791
Standard Test Method for Flat Particles, Elongated Particles, or Flat and Elongated Particles in Coarse Aggregate
Available Formats:
- Availability: Immediate Download
- Language: English
- License Type: Single User
- Updates: Not Included
- Availability: Request Quote
- Language: English
- License Type: Enterprise / Multi User
- Updates: Included
About This Item
ASTM D4791 is the standard test method for identifying flat particles, elongated particles, or flat and elongated particles in coarse aggregate. It is used to evaluate aggregate shape characteristics that can affect handling, placement, and overall material performance. By providing a consistent testing approach, this ASTM standard helps support quality control, specification compliance, and more reliable comparison of coarse aggregate materials used in construction-related applications.
Purpose of ASTM D4791
The purpose of ASTM D4791 is to measure the presence of particle shapes that may be considered undesirable in coarse aggregate, especially flat or elongated pieces. The standard gives users a common technical basis for assessing aggregate geometry in a repeatable way. This is important when material shape can influence compaction, interlock, workability, or durability expectations. As a result, the method supports consistent evaluation under defined testing requirements.
Common use cases of ASTM D4791
This standard is commonly used when coarse aggregate must be checked against project or specification limits for particle shape. It is relevant in aggregate production, laboratory testing, incoming material inspection, and quality assurance workflows. ASTM D4791 may also be used during product evaluation or procurement when buyers need a clear method for comparing aggregate consistency. In practice, it helps confirm that coarse aggregate meets expected shape-related requirements before use.
Why ASTM D4791 matters
ASTM D4791 matters because particle shape can affect how coarse aggregate performs in the field and whether it meets contract requirements. Using a recognized test method helps reduce variation between test results and supports more dependable acceptance decisions. It also gives producers, laboratories, and specifiers a shared reference for quality control and compliance. For projects where aggregate characteristics matter, this standard helps lower risk and improve consistency across materials and testing programs.
- Coarse aggregate shape evaluation
- Flat and elongated particle assessment
- Quality control and acceptance testing
- Specification and procurement support
- Consistent laboratory testing practice
- Publication Date: 2024-04-11
- Publisher: ASTM
Need This Standard?
Request a personalized quote today to receive the latest edition in PDF or other available formats.
Need This Standard?
Request a personalized quote today to receive the latest edition in PDF or other available formats.
Summarize with AI
Get quick summaries using your favorite AI engine.
Online Standart Disclaimer
OnlineStandart.com is an authorized reseller of international standards, operating through partnerships with authorized distributors. We do not own the copyrights or trademarks of the standards we sell, including but not limited to those of API, ASHRAE, BSI, SAE, ASTM, IEEE, IEC, ASME, ISO, and others.
All product names, logos, and brands are the property of their respective owners and are used for identification purposes only; their use does not imply endorsement. OnlineStandart.com is not affiliated with or endorsed by any standards development organization unless explicitly stated. The content of this document is for informational purposes only and is intended to promote our licensed reselling services.
Online Standart does not host, distribute, or link to free, unlicensed, or uncertified copies of copyrighted standards. Every document we deliver is a licensed copy obtained through authorized channels and supplied with full licensing documentation. The “Free PDF Download” option on our product pages refers to this free informational document — never to a free copy of any standard.