Yuanita, N.; Abednego, M.; Rabbani, R.; Gunawan, E.; Rildova, R.; Fagmi, R., and Kurniawan, A., 2024. Cost estimation comparison between natural and synthetic fibers textile for temporary geobag-dyke structure in coastal protection systems. In: Phillips, M.R.; Al-Naemi, S., and Duarte, C.M. (eds.), Coastlines under Global Change: Proceedings from the International Coastal Symposium (ICS) 2024 (Doha, Qatar). Journal of Coastal Research, Special Issue No. 113, pp. 809-813. Charlotte (North Carolina), ISSN 0749-0208.

Several tropical countries have started implementing natural-based coastal protection systems using mangrove vegetation. This system has significantly protected the shoreline and reduced coastal erosion. However, this implementation is still challenging because when the mangrove plants are still young, they are not strong enough and can be damaged by incoming waves. Constructing a temporary geobag-dike structure is to maintain the mangrove growth. In this current era, geotextile remains the primary material for constructing geobags in construction projects. This geotextile is made from synthetic material and can become a waste issue in coastal water if left untreated. To address this problem, environmentally friendly fabrics from ramie are being developed and further researched as an alternative material to geotextile. This study will further discuss the cost estimation of the geotextile option and the ramie fabric option (environmentally friendly fabric) and analyse their differences. The research results indicate that the cost required for a geobag-dike structure with geotextile material will be higher than the rami fabric option. The cost difference is attributed to variations in fabric price, shipping costs, dismantling expenses, and risk treatment costs.