Aci self consolidating concrete
After spreading ceases, two orthogonal diameters of the concrete patty are measured.
The slump flow is the average of the two diameters.
Further information ACI 237R-07, Self-Consolidating Concrete, American Concrete Institute, Farmington Hills, MI, 2007, 30 pp.
Concrete Bridge Applications are Expanding Self-Consolidating Concrete for Beams Speeds Biloxi Bay Bridge Construction Implementing SCC Technology in Nebraska—All About Working Together ASTM Test Methods for Self-Consolidating Concrete This material is based upon work supported by the Federal Highway Administration under Cooperative Agreement No. Any opinions, findings, and conclusions or recommendations expressed in this publication are those of the Author(s) and do not necessarily reflect the view of the Federal Highway Administration.
The J-Ring is placed outside the slump cone so that the concrete flows through the legs of the ring when the cone is lifted. After 15 minutes, the mold is separated into three sections representing the top, middle, and bottom of the cylinder.
The slump flow with and without the J-Ring is measured. Each section is removed individually and the concrete in the top and bottom sections washed over a No. The retained aggregate from each section is weighed and the static segregation calculated as the difference between the bottom and top sections divided by the average weight.
Question: Definition of controlled low-strength material (CLSM) Question: Why is consolidation needed? Question: Consolidation of Concrete—Required or Not?
Self-consolidating concrete is highly flowable, non-segregating concrete with a slump flow of 20 to 30 inches that can spread into place, fill the formwork, and encapsulate the reinforcement without any mechanical consolidation.
ASTM C1611—Slump Flow of Self-Consolidating Concrete This test is performed in a similar manner and with similar equipment as the conventional slump test—ASTM C143.
The slump cone can be either used the same way up or inverted.
SDC works to identify obstacles to industry adoption of self-consolidating concrete, formulates strategies to address obstacles, and determines specific tasks to execute strategies.