Currently, there are three popular types of facing for Mechanically Stabilized Earth (MSE) Walls: the full-height concrete facing (i.e., Japanese RRR), the segmental/articulated/discrete precast pan-el (i.e., Reinforced Earth, keystone, etc.) and the wrap around facing. This paper compares these wall fac-ings by using of various criteria: cost, appearance, safety related to facing, construction time, durability, ecology (possibility of vegetation) and CO2 emission during the life cycles of walls.
Each type of facing has pros and cons in performances based on the above criteria. In this study, the wrap around facing turns out to be the most economical, easy for construction, ecological and least carbon emission. It is particularly suitable for humid areas and rural environment. The segmental/articular panel facing is superior in appearance, and suitable for dry areas and cities. However, it should be noted that some failures were found recently related to discrete panels and connections between panels and rein-forced backfills. The full-height concrete facing is the most reliable one in terms of durability and safety.
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