The paper describes a series of four full-scale modular block walls that were constructed with reinforcement layers having different stiffness. The walls were 3.6 m in height and were reinforced with two different polypropylene geogrid reinforcement materials, a polyester geogrid and a welded wire mesh. Each was constructed with the same modular block facing and reinforcement spacing of 0.6 m. Maximum reinforcement loads are compared to values predicted using the current AASHTO Simplified Method and the K-stiffness Method. The predicted magnitude and distribution of reinforcement loads are shown to be more accurate using the K-stiffness Method.
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