Ekaputri, Januarti Jaya, and Triwulan Triwulan. “GEOPOLYMER CONCRETE USING FLY ASH, TRASS, SIDOARJO MUD BASED MATERIAL”. Journal of Civil Engineering, vol. 31, no. 2, July 2025, p. 57, doi:10.12962/j20861206.v31i2.7594.