ASTM C143
Full Name
ASTM C143 – Standard Test Method for Slump of Hydraulic-Cement Concrete
Scope
ASTM C143 is a standardized procedure to determine the consistency, or slump, of freshly mixed concrete. The slump test measures how easily the concrete flows and its ability to maintain uniformity after being placed.
The scope of ASTM C143 includes:
- Purpose: to determine the consistency of freshly mixed concrete, which is an indicator of its workability.
- Apparatus: a mold in the form of a truncated cone with specific dimensions, a tamping rod, and a ruler or tape measure.
- Test procedure: involves filling the mold with concrete in layers, compacting each layer with the tamping rod, removing the mold, and measuring the vertical distance (slump) between the top of the mold and the top of the concrete.
- Significance: slump is a critical parameter for quality control in concrete production and placement. It helps ensure that the concrete is consistent and suitable for its intended application. Too wet or too dry concrete can lead to various problems, such as segregation, bleeding, and poor consolidation.
ASTM C143 does not directly measure other properties of concrete, such as strength or durability. However, slump can indirectly indicate these properties, as a well-proportioned concrete mix with the correct slump is more likely to perform well in terms of strength and durability.
ASTM C143 Accredited Laboratory
Applied Testing & Geosciences, LLC is accredited for performing tests using the ASTM C143 standard.
By understanding your project requirements, we can provide tailored testing solutions to optimize your concrete mix design and placement. Contact us today to learn more about our testing services and how they can benefit your project.
Resources
Keywords
slump; concrete; slump cone; tamping rod; workability; consistency; freshly mixed concrete; hydraulic cement concrete