Hydraulic Stability of Concrete Armour Unit: A 2D Physical Model Study

Abstract

Abstract Coastal structures designed to protect against erosion caused by wave action, storm surge, and currents are called revetment. The revetment armour layer design is the critical component of the stability of the structure. Structural failure could occur due to a faulty armour unit’s weight design. The stability test of the BPPT Lock primary layer unit for revetment will be conducted in this study. This study employs an experimental approach to evaluate revetment models in the laboratory using three different structural slope configurations and BPPT Lock primary layer units. It was shown that structure with a 1: 1.15 slope has the least stability, while a structure with a slope of 1: 2 is the most stable for the various wave heights identified in the test. The damage was found in the run-up and run-down areas. A 16 cm wave height in the 1: 1.15 structure’s slope results in 8.99% damage, while at the slope of 1: 1.5 and 1: 2, the damage occurs at 5.42% and 2.56%, respectively.