AASHTO T 351-14 (2018) PDF Download

The AASHTO T 351-14 (2018) standard provides a procedure for determining the visual stability index of self-consolidating concrete. This test method can be used in both laboratory and field settings.

Self-consolidating concrete (SCC) is a type of concrete that has high workability and is able to flow through dense reinforcement or complex structural elements without the need for external vibration. It also has the ability to fill voids without experiencing segregation or excessive bleeding.

The visual stability index (VSI) is a measure of the stability and resistance to segregation of the SCC mixture. This index is determined by visually evaluating the concrete sample for signs of segregation, bleeding, and stability. The VSI rating scale ranges from 0 to 3, with higher values indicating better stability.

By using this standard method, engineers and technicians can assess the visual stability of self-consolidating concrete to ensure its suitability for various construction applications. This helps to ensure that the concrete will perform as expected and meet the necessary quality and performance standards.