Numerical Investigation of RC T-Beams Strengthened with Polymer-Modified Mortar and Embedded Steel Bars Under Earthquake Excitation. - Nugroho, Laurencius; Sudibyo, Gathot Heri; Haryanto, Yanuar; Hu, Hsuan-Teh; Hsiao, Fu-Pei; Hidayat, Banu Ardi; Wariyatno, Nanang Gunawan; Mulyono, Bagyo (Applied Sciences (2076-3417), 2026)