Description
The L-box test is used to assess the passing ability of self-compacting concrete to flow through tight openings including spaces between reinforcing bars and other obstructions without segregation or blocking. There are two variations; the two bar test and the three bar test. The three bar test simulates more congested reinforcement.
A measured volume of fresh concrete is allowed to flow horizontally through the gaps between vertical, smooth reinforcing bars. The height of the concrete behind the bars and at the end of the end of the box is measured and the ratio determined which enables the passing or blocking behaviour of SCC to be estimated.
EN12350-10
