2 documents found, page 1 of 1
Experimental Study on the Flexural Behavior of Alkali Activated Fly Ash Mortar ...
Lopes, Adelino V.; Lopes, Sergio M. R.; Pinto, IsabelThis work aims to study the possibility of using alkaline activated fly ash in structural members. The work, of an experimental nature, focuses on the evaluation of the behavior of simply supported beams under two symmetrical loads (four-point tests). For such study, 10 beams were built, of which, five using fly ash and the remaining five using traditional Portland cement. The test results are compared. Conclus...
Theoretical model for the mechanical behavior of prestressed beams under torsion
Lopes, Sergio M. R.; Bernardo, Luís F.A.In this article, a global theoretical model previously developed and validated by the authors for reinforced concrete beams under torsion is reviewed and corrected in order to predict the global behavior of beams under torsion with uniform longitudinal prestress. These corrections are based on the introduction of prestress factors and on the modification of the equilibrium equations in order to incorporate the ...