Creep Behaviour in Cracked Sections of Fibre Reinforced Concrete: Proceedings of the International R

Keynote LecturesFactors Influencing Creep of Cracked Fibre Reinforced Concrete: What We Think We Know & What We Do Not KnowIntroductionEffect of Load, Temperature and HumidityProgressive Pull-Out MechanismsDamage Due to Anchorage Failure in Deformed FibresFilament or Individual Fibre Creep or RelaxationCrack Propagation Due to Relaxation of Cohesive StressesRelevance of Wide CracksConclusionsReferencesCreep Testing Methodologies and Results InterpretationIntroductionPull-Out TestsUniaxial Tension TestsBending TestsTest SetupInterpretation of ResultsPlate TestsConclusionsReferencesFlexural Creep Tests on Beams—8 Years of Experience with Steel and Synthetic FibresIntroductionLiterature Review on Flexural Creep Testing on BeamsDiscussion of Test ProcedureInvestigations at the OTHTesting Post Crack BehaviourFlexural Creep TestDiscussion and Possible ImprovementsConcrete Mix DesignResults of Creep TestsFailure ModeConclusionsReferencesExperiences from 14 Years of Creep Testing of Steel and Polymer Fiber Reinforced ConcreteIntroductionMaterialsTest ProgramsStatically Determinate Beam TestStatically Indeterminate Plate TestProgram Results and DiscussionStatically Determinate Beam TestStatically Indeterminate Plate TestConclusionsReferencesCreep Deformations of Structural Polymeric MacrofibersIntroductionExperimental SetupMaterial CharacterizationCreep FrameCreep SpecimensResultsMaterial CharacterizationCreep DeformationsDiscussionConclusionsReferencesTensile Creep of Cracked Steel Fibre Reinforced Concrete: Mechanisms on the Single Fibre and at the Macro LevelIntroductionTest SetupSingle Fibre Pull-Out TestsSingle Fibre Pull-Out Creep Test SetupUni-Axial Tensile Test SetupUni-Axial Tensile Creep Test SetupDrying Shrinkage Test SetupMaterials and Test ProgrammeMaterials and Mix DesignSingle Fibre TestsUni-Axial Tensile Creep TestsTest ResultsSingle Fibre Pull-Out Rate TestsSingle Fibre Pull-Out Creep TestsUni-Axial Tensile Creep TestsPre-Damaged Single Fibre Pull-Out Creep TestsConclusionsReferencesFlexural Post-cracking Creep Behaviour of Macro-synthetic and Steel Fiber Reinforced ConcreteIntroductionExperimental MethodMaterials and Mix DesignTest ProcedureExperimental Results and DiscussionCreep Crack Width ResultsCreep Coefficient ResultsConclusionsReferencesBehavior of Cracked Cross-Section of Fibre Reinforced UHPFRC Under Sustained LoadIntroductionExperimental ProgramUHPFRC Material BehaviourPreliminary Sustained Load TestsFibre Orientation and Computed TomographyConclusionsReferencesExperimental Study on Time-Dependent Behavior of Cracked UHP-FRCC Under Sustained LoadsIntroductionEmployed UHP-FRCC in This StudyExperimental ProgramResults and DiscussionConclusionsReferencesCreep Behaviour of Cracked High Performance Fibre Reinforced Concrete Beams Under Flexural LoadIntroductionDesign of the FrameExperimental ProgramMaterials and Concrete MixPre-cracking and Loading SequenceResultsEvolution of the DeflectionEvolution of the Creep CoefficientConclusionsReferencesTime-Dependent Flexural Behaviour of SFRSCC ElementsIntroductionExperimental ProgrammeConcrete CompositionSpecimensTest SetupAssessment of the Fibre Orientation and DistributionResults and DiscussionFibre Orientation and DistributionLong-Term Four-Point Bending TestInfluence of the Loading Ratio on the Creep BehaviourInfluence of Notch Plane Orientation on the Creep BehaviourInfluence of Distance from the Casting Point on the Creep BehaviourComparison Between Monotonic and Long-Term BehaviourAnalytical Equation to Predict the SFRSCC Creep BehaviourConclusionsReferencesEffect of Residual Strength Parameters on FRC Flexural Creep: Multivariate AnalysisIntroductionOverview of Data and MethodologySummary of the Information CollectedTreatment of Missing ValuesMultivariate Description of FRC Mechanical PerformanceBivariate CorrelationsPrincipal Component Analysis (PCA)Redefinition of the Variables Characterising FRC MixesMultiple Regression AnalysisDefinition of RegressorsSummary of the MLR Models ObtainedDiscussion of the Models for Creep CoefficientsEffect of Concrete Compressive StrengthEffect of Loading Ratio and Fibre MaterialEffect of the Flexural ToughnessDiscussion of the Models for the Crack Opening RatesEffect of Load Ratio and Fibre MaterialEffect of Flexural ToughnessConclusionsReferencesMid-term Behaviour of Fibre Reinforced Sprayed Concrete Submitted To Flexural LoadingIntroductionTest Method to Evaluate the Mid-term Behaviour of Frsc Submitted to Flexural LoadingExperimental ProgrammeTesting ProgrammeConcrete Mix DesignConcrete ReinforcementsApplicationBasic CharacteristicsMain ResultsConsistency of the Experimental LoadsPre-cracking PhaseMid-term Deflections Under Constant LoadEnergy Absorption Capacity Before and After Creep TestContribution of Reinforcements Prior to the Softening PhaseConclusion, PerspectivesReferencesEffect of Beam Width on the Creep Behaviour of Cracked Fibre Reinforced ConcreteIntroductionExperimental ProgramTest Results and AnalysisCharacterization Tests and Pre-cracking ProcessCreep TestsEffect of Long Term Loads on FRC Residual Strength PropertiesEffect of the Content of Fibres in the Cracked SectionConclusionsReferencesMacro-Synthetic Fibre Reinforced Concrete: Creep and Creep MechanismsIntroductionMaterials and MethodsFibre and ConcreteMould and Specimen PreparationUniaxial Tensile Strength TestUniaxial Tensile Creep TestDrying Shrinkage TestSingle Fibre TestsExperimental Results and DiscussionUniaxial Tensile Strength ResultUniaxial Tensile Creep ResultSingle Fibre TestsConclusionsReferencesInfluence of Fibre Reinforcement on the Long-Term Behaviour of Cracked ConcreteIntroductionExperimental ProgramMaterials and Mix DesignReinforcementsTest SpecimensCreep Test VariablesFlexural Creep Test MethodologyTest Specimen Pre-crackingCreep TestPost-creep Flexural Bending Test to FailureTest Results and AnalysisCharacterization TestsCreep TestsResults AnalysisConclusionsReferencesCreeping Effect of SFRC Elements Under Specific Type of Long Term LoadingIntroductionExperimental ProgramSelected Experimental ResultsTime-Dependent DeflectionsTime-Dependent Cracks WidthConclusionsReferencesCreep Behavior of a SFRC Under Service and Ultimate Bending LoadsIntroductionExperimental ProgramMaterials and CharacterizationFlexural Creep Test ProcedureResults and DiscussionServices ConditionsUltimate ConditionsConclusionsReferencesDurability of FRC Beams Exposed for Long-Term Under Sustained Service LoadingIntroductionExperimental CampaignResults and DiscussionConclusionsReferences
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