AASHTO T119
Full Name
AASHTO T119 – Standard Method of Test for Slump of Hydraulic Cement Concrete
Scope
AASHTO T119 is a standard test method used to determine the consistency and workability of freshly mixed hydraulic cement concrete. The slump test is a simple yet valuable tool for quality control in concrete production and construction, providing a quick assessment of the concrete’s fluidity and its ability to be placed and finished effectively.
Key aspects of AASHTO T119:
- Purpose: the primary objective of the slump test is to measure the consistency of concrete, which is an indicator of its workability. Workability refers to the ease with which concrete can be mixed, transported, placed, and consolidated.
- Procedure: the test involves filling a standard slump cone with fresh concrete in three layers, each layer being rodded a specified number of times. The cone is then carefully lifted, allowing the concrete to subside under its own weight. The distance between the top of the slumped concrete and the top of the mold is measured, and this distance is reported as the slump.
- Interpretation: the slump value provides an indication of the concrete’s consistency. A high slump value indicates a wetter and more fluid mix, while a low slump value indicates a drier and stiffer mix. The desired slump value varies depending on the specific application and the method of placement.
Significance of AASHTO T119:
- Quality control: the slump test is a simple and quick method for assessing the consistency of concrete on the job site. This allows for adjustments to the mix design or water content to achieve the desired workability.
- Acceptance criteria: the slump test is often used as an acceptance criterion for concrete deliveries. Project specifications typically define the acceptable slump range for the specific application.
- Performance prediction: the slump test can also provide an indirect indication of other concrete properties, such as strength and durability.
AASHTO T119 Accredited Laboratory
Applied Testing & Geosciences, LLC is accredited for performing tests using the AASHTO T119 standard.
Our laboratory offers comprehensive concrete testing services, including the slump test according to AASHTO T119. Our experienced technicians utilize standardized procedures and equipment to ensure the accuracy and reliability of our test results.
Contact us for more information.
Resources
Keywords
slump; concrete; workability; consistency; slump cone; tamping rod; freshly mixed concrete; hydraulic cement concrete