Advances in Engineered Cementitious Composite: Materials, Structures, and Numerical Modeling

✍ Scribed by Y. X. Zhang, Kequan Yu

• Publisher: Woodhead Publishing
• Year: 2022
• Tongue: English
• Leaves: 540
• Series: Woodhead Publishing Series in Civil and Structural Engineering
• Edition: 1
• Category: Library

✦ Synopsis

Advances in Engineered Cementitious Composite: Materials, Structures and Numerical Modelling focuses on recent research developments in high-performance fiber-reinforced cementitious composites, covering three key aspects, i.e., materials, structures and numerical modeling. Sections discuss the development of materials to achieve high-performance by using different type of fibers, including polyvinyl alcohol (PVA), polyethylene (PE) polypropylene (PP) and hybrid fibers. Other chapters look at experimental studies on the application of high-performance fiber-reinforced cementitious composites on structures and the performance of structural components, including beams, slabs and columns, and recent development of numerical methods and modeling techniques for modeling material properties and structural behavior.

This book will be an essential reference resource for materials scientists, civil and structural engineers and all those working in the field of high-performance fiber-reinforced cementitious composites and structures.

✦ Table of Contents

Front Matter
Copyright
Contributors
Preface
Introduction to the development and application of engineered cementitious composite (ECC)
Introduction
Research and development of ECC materials
Research and development of ECC structure components and structural applications
Research and development of numerical modeling methods for ECC materials and structures
Layout and content of this book
References
Mechanical behavior of a polyvinyl alcohol engineered cementitious composite (PVA-ECC) using local ingredients
Introduction
Materials and specimens
Materials and mix proportions
Specimen preparation
Experimental programs
Uniaxial compression test
Young's modulus test
Uniaxial tension test
Four-point bending test
Experimental results and discussion
Compressive properties of the PVA-ECC
Tensile properties of the PVA-ECC
Flexural properties of the PVA-ECC
Statistical data analysis
Conclusions
References
All-strength-grade polyethylene engineered cementitious composite (PE-ECC): Mechanicalperf
Introduction
Experimental program
Materials and mix proportions
Mixing and curing procedures
Testing procedure
Compressive test
Direct tensile test
Shear test
Mechanical and energy parameters and performance-based design method
Compressive properties
Failure mode
Stress-strain curve
Compressive parameters
Elastic modulus
Toughness index
Poisson's ratio
Strain at peak stress
Constitutive model
Nonlinear analysis model
Proposed design model for ECC
Tensile properties and performance-based design
Tensile parameters
Performance-based design concept of all-grade PE-ECC
Energy dissipation characteristics of all-grade PE-ECC
Strain energy density
Fracture energy
Shear properties
Conclusions and future research
References
Material properties and high-velocity impact responses of a new hybrid fiber-reinforced engineered cementiti
Introduction
Behavior of ECC material incorporating with hybrid fibers
Materials
Preparation of specimen
Specimens dimensions
Mixing procedures
Specimen casting
Mix proportions
Tests setup
Uniaxial compression
Flexual test: Four-point bending test
Uniaxial tensile
High-velocity impact test
Projectiles
Impact test
Results and discussion for material properties
Uniaxial compression strength
Flexural strength
Uniaxial tensile strength
Test with varying strain rate
Test results
Analysis of high-velocity impact responses of ECC panels
Postimpact failures of single projectile impact
Postimpact failure of ECC panels
Postimpact failure of plain concrete panels
Comparison of postimpact damage parameters
Effects of double projectile impact
Results discussion
Penetration depth
Perforation velocity
Size of cratering, scabbing, and bulging
Impact energy and fragmentations
Impact energy
Fragmentation
Failure mechanisms
Conclusions
References
Further reading
Bond behavior of deformed bars in steel-polyethylene hybrid fiber engineered cementitious composite (ECC)
Introduction
Experimental program
Materials and mix proportions
Specimen design
Test setup and instrumentation
Experimental results
Failure patterns
Bond strength and bond stress-slip curves
Discussions
Effects of parameters on bond behavior
Anchorage length (la)
Cover thickness (c)
Rebar diameter (d)
Average bond strength
Critical anchorage length
Design anchorage length based on the reliability analysis
Damage classification through AE analysis
Cumulative AE hits
Cumulative AE energy
Damage characteristics and qualifications
Cumulative AE parameters
Ib-value
AE signal intensity
Conclusions and future research
References
Structural behavior of reinforced polyvinyl alcohol engineered cementitious composite (PVA-ECC) beams under st ...
Introduction
Experimental program
Beam design
Test setup and instrumentation
Fatigue loading condition
Static test results
Load-deflection relationship
RC beams versus RECC beams
RC-NS beams versus RECC-NS beams
RECC beams versus RECC-NS beams
PECC beams versus RECC-NS beams
Failure mode
Ductility
Moment-curvature relationship
Crack patterns and development
Development of the single crack
Development of the total crack mouth opening displacement
PVA-ECC matrix and steel reinforcement bond behavior
Strain distribution in reinforcement bars
Fatigue test results
Failure mode
Mid-span deflection
Stiffness degradation
Strain analysis
Stress range-fatigue life relationship
Crack development
Crack pattern and propagation
Development of single crack width
Development of total crack mouth opening displacement (TCMOD)
Bonding between the matrix and tensile reinforcement bars
Conclusion
References
Enhancement on the flexural behavior of engineered cementitious composite (ECC) encased steel composite beams
Introduction
Experimental program
Details of the materials
Steel section
ECC, LWC, and NC
Details of the test specimens
Preparation of the test specimens
Casting procedure
Test method and instrumentation
Experimental results
Mechanical properties of the materials
Load-deflection responses, failure modes, and DIC analysis of the beams
Series-I beams: ECC-LWC encased compact normal strength steel composite beams
Series-II beams: ECC-LWC encased compact high strength steel composite beams
Series-III beams: ECC-LWC encased slender high strength steel composite beams
Strain analysis of the beams
Series-I beams: ECC-LWC encased compact normal strength steel composite beams
Series-II beams: ECC-LWC encased compact high strength steel composite beams
Series-III beams: ECC-LWC encased slender high strength steel composite beams
Comparison of different series of beams
Conclusions
References
Structural behavior of engineered cementitious composite (ECC)-concrete encased steel composite columns under axia
Introduction
Experimental program
Plate slenderness of steel sections
Casting process of columns
Testing procedure and instrumentation plan
Compressive behavior of tested columns
Failure modes and mechanism
Control columns
ECC-CES columns
ECC-concrete columns
Load-deformation behavior
Ductility
Energy absorption capacity
Initial stiffness
Detailed strain analysis
Strain development patterns
Strain analysis
Ultimate compressive strength of ECC-CES columns
Concluding remarks
References
Flexural behavior of fire-damaged RC slabs strengthened with basalt fabric-reinforced engineered cemen
Introduction
Experimental program
Details of test specimens
Properties of material
Concrete and steel reinforcement
BFRS composite
Testing procedure
Fire test
Strengthening procedure
Four-point bending test
Fire test results
Bending test results and discussion
Test observations and failure modes
Load responses
Load-deflection behavior
Ductility performance
Displacement ductility
Energy ductility
Strain measurements
Conclusions
References
Numerical modeling of the flow of self-consolidating engineered cementitious composite (ECC) using smoothed p ...
Introduction
Numerical strategy for modeling SC-ECC flow
Governing equations of SC-ECC
Rheology behavior of self-consolidating ECC
Rheology behavior
Input rheology parameters for modeling SC-ECC flow
Smoothed particle hydrodynamics (SPH)
The basic concept of SPH in simulating viscous flow
Boundary conditions in SPH
Treatment of flexible synthetic fiber
Weakly compressible SPH and time integration scheme
Weakly compressible SPH
Time integration scheme
Simulation results
2D simulation: Slump flow test
3D simulation
V-funnel test
U-box test
Observation of the motion of the fibers
Conclusions
References
Multiscale modeling of multiple-cracking fracture behavior of engineered cementitious composite (ECC)
Introduction
Microscale and lower-mesoscale modeling
Fiber bridging behavior
Crack bridging model
Degradation of crack bridging under fatigue loading
Upper-mesoscale modeling
Description of the model
Boundary conditions
Modeling philosophy
Material randomness
Implementation of the modeling
Integrated CZM-XFEM method
A new four-node quadrilateral element
Homogenization for material properties
Flow chart
Demonstrations
Static uniaxial tensile behavior
Size effect of the RVE model
Saturate cracking
Role of fly ash
Bridging stress degradation under fatigue loading
Conclusions
References
A constitutive model for numerical modeling of steel fiber-reinforced concrete
Introduction
A constitutive model for steel fiber-reinforced concrete
Damage criterion
Damage function in compression
Damage function in tension
Strength surface
Equation of state
Strain rate effect
Fractionally associative plastic flow rule
Parameters for SFRC constitutive model
Parameters for strength surface
SFRC in compression
SFRC in tension
Numerical examples
SFRC under triaxial compression
SFRC panel subjected to blast load
SFRC panels under projectile impacts
Conclusions
References
Finite element analysis of engineered cementitious composite (ECC) slabs
Introduction
Finite element method
Constitutive model of ECC
Concrete damaged plasticity (CDP) model
Type of finite element
Finite element analysis of thin slabs without reinforcement
Geometry and boundary conditions
Compressive and tensile models
CDP model
Mesh
Numerical validation
Results and discussions
Finite element analysis of link slabs with steel reinforcements
Geometry
Boundary conditions and interactions
Material models
Mesh sensitivity
Numerical validation
Results and discussions
References
Numerical modeling of structural behavior of engineered cementitious composite (ECC) slabs subjected to high- ...
Introduction
Material models for ECC under dynamic loading
Review of the typical material models for plain concrete under dynamic loading
Pseudo-tensor model
Isotropic elastic-plastic with oriented cracks model
Soil concrete model
Johnson-Holmquist model
Evaluation of the concrete damage model and the elastic-plastic hydrodynamic model
Stress-strain relationship
Concrete damage model
Elastic-plastic hydrodynamic model
Equations of states (EOS)
Mesh size effect
Concrete damage model
Elastic-plastic hydrodynamic model
Load effects due to impact
Concrete damage model
Elastic-plastic hydrodynamic model
Numerical modeling of ECC slabs subjected to projectile impact
Finite element model
Erosion criteria
Results and discussion
Conclusions
References
Finite element analysis of engineered cementitious composite (ECC) encased steel composite beams subjected to ...
Introduction
Finite element modeling of the ECC-LWC encased steel composite beams
Element type and mesh size analysis
Material models for ECC, LWC, and steel
Boundary and loading conditions
Bond-slip modeling
Validation of the FE model
Parametric study
Effect of the material parameters
General and effects of beam configurations
Effect of compressive strength of ECC
Effect of compressive strength of LWC
Effect of yield strength of steel
Effect of the geometric parameters
Effect of flange width to thickness ratio
Effect of web depth-to-thickness ratio
Effect of ECC layer thickness
Effect of ECC cover thickness
Discussions of the parametric study results
Conclusions
References
Finite element analysis of engineered cementitious composite (ECC)-concrete-encased steel composite columns u ...
Introduction
Development of finite element model for ECC-CES columns
Geometric modeling of ECC-CES columns
Material modeling of ECC, concrete, and steel
Compressive stress-strain model for ECC
Tensile stress-strain model for ECC
Compressive stress-strain model for concrete
Tensile stress-strain model for concrete
Stress-strain model for steel
Contact interactions between different components
Modeling of geometric imperfections
Mesh sensitivity analysis and end support conditions
Validation of finite element model
Control bare steel columns
ECC-concrete columns
ECC-steel and concrete-steel columns
ECC confined concrete-encased steel (ECC-CES) columns
Numerical parametric study
Discussion of parametric study results
Applicability of squash load formula for column strength prediction
Concluding remarks
References
Index
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
R
S
T
U
V
W
X
Y