ASTM C1621 J-Ring Test of Self-Compacting Concrete (SCC)
What Is the J-Ring Test? The J-Ring test is used to evaluate the passing ability of Self-Compacting Concrete (SCC) in accordance with ASTM C1621/C1621M. Passing ability is the capacity of fresh concrete to flow under its own weight through congested reinforcement and other obstructions without vibration, segregation, or blocking. The test compares the flow of … Read more
