An Experimental Study on the Effect of Different Geofiber types on the Liquefaction Resistance of a Silty Sand Soil

In this study, use of a new polypropylene geofiber type called microgrid fiber (MGF) was investigated in comparison with a conventional polypropylene fiber (PPF) product. Liquefaction resistances of saturated silty sand type soil mixes reinforced with different polypropylene type geofiber additives were investigated carrying out different laboratory scale cyclic load tests. Depending on the fiber content, liquefaction resistances of soil mixes were significantly improved using the geofiber additives. According to the results obtained from this study, the MGF type fiber increased the liquefaction resistances at higher rates in comparison with the conventional PPF product. It was assessed that MGF type novel additives can be used to supply a better adherence in soil mixes and higher reinforcement performances against the liquefaction, rather than conventional PPF products.