TUNG, D. D.; TU, C. V.; PHUNG, H. T. K.; LONG, N. M. Effect of prestressing force on flexural behavior of unbonded prestressed concrete beams strengthened by CFRP sheets. Journal of Science and Technology in Civil Engineering (JSTCE) - HUCE, v. 16, n. 1, p. 1-18, 26 jan. 2022.