Abstract: A new soil reinforcement method using mesh with teeth is proposed based on horizontal-vertical (H-V) reinforcement. First, holes and vertical bars are set on the perspex material to constitute a three-dimensional reinforcement material. A series of pull-out tests of perspex with holes geosynthetics are performed to investigate the interface behavior between sand and perspex with hole inclusions in terms of different forms of reinforcements. The impact of tooth height and hole size of reinforcement for ultimate pull-out resistance is discussed. Test results show that the up-limited pull-out force of perspex with teeth is significantly larger than the ordinary ones in the same normal stress. The up-limited pull-out resistance increases with the tooth height, and is significantly influenced by the hole size. Coefficient of apparent pull-out friction is evaluated. A theoretical formula is proposed to determine the pullout resistance. The theoretical values and experimental results are in good agreement.

Key words: grid reinforcement of denti-inclusion, horizontal-vertical (H-V) reinforced soil, pull-out test, up-limited pull-out resistance