Ghorbani, A. et al. 2018. Strength Characteristics of Cement-Rice Husk Ash Stabilised Sand-Clay Mixture Reinforced with Polypropylene Fibers. The Baltic Journal of Road and Bridge Engineering. 13, 4 (Dec. 2018), 447–474. DOI:https://doi.org/10.7250/bjrbe.2018-13.428.