Micromechanical behaviorof high performance concrete under cyclic loading at various moisture and thermal conditions

DIEGO SAID SCHICCHI; EDDIE KOENDERS; ANTONIO CAGGIANO; ALBRECHT GILKA-BÖTZOW; SHA YANG

Encuentro; Summer School 2018 - DFG-SPP2020; 2018

Thetheoreticalmodelproposedtosimulatethecyclicresponseofcement-basedmaterialsisbaseduponthefollowingkeyassumptions:Aunifiedcoupleddamage-elastoplasticconstitutiveisproposedforbothLCFandHCF;LCF:stiffness(damage)degradationintheunloadingstagesdependsupontheactualvalueofthe"fracturework"developedineachinterfacepoint;HCF:amultiscaleandmicrocrackmechanismsaccountfordescribingtheHCFphenomena;?small?displacementsareassumed;quasi-staticloads(inertialforcescanbeignored),Strainrateeffectsareomitted.