High-performance fibre-reinforcedcementorconcretecomposites(HPFRCC)areincreasinglyusedin
structural applicationsexposednotonlytouniaxialbutalsocomplexstressstates.Current finite element
models forthesematerialshavehoweverbeenonlyvalidatedforuniaxialstressstates,andmostly
restrictedtocementcompositeswithrelativelylimitedstrainhardeningcapacityintension.Tofacilitate
the numericalanalysisanddesignofmorecomplexstructures,thispaperadaptsandvalidatesthe
ConcreteDamagedPlasticity(CDP)modelforbothuni-andbiaxialstressstates,andforcement
composites withalargestrainhardeningcapacity(ratiooffailurestresstolinearstresslimitmorethan
8). Thevalidationofthenumericalmodelisdonebyperforminglaboratorybiaxialtension–tension tests
under variousloadcases.Forthelatter,anadaptedcruciformspecimenwasdesigned.Thestrain
distribution inthespecimenaswellasitsevolutionwithincreasingloadcorrespondwell.Astheresults
show,theadaptedCDPmodelcansimulatethenonlinearstrainhardeningbehaviourintension –
different fromthelinearbehaviourincompression – of high-performancecementcompositesforboth
uniaxial aswellasbiaxialstressstates.Moreover,failurecanbesimulated.