Rochmah, N., Nurani Hartatik, Retno Trimurtiningrum and Musthofa Saifa Ardana 2025. The Effect of Coconut Fiber Ash Waste as Added Material in Flowing Concrete : The Effect of Coconut Fiber Ash Waste as Added Material in Flowing Concrete . International Conference of Innovation and Community Engagement. 1, 01 (Jan. 2025), 178-185.