JSCE Concrete Library 127
Recommendations
for Design and Construction of High Performance
Fiber
Reinforced Cement Composites with Multiple Fine Cracks (HPFRCC)
|
High performance fiber reinforced cement composites
with multiple fine cracks (HPFRCC) show remarkably high ductility under
uniaxial tensile stress and excellent performance distinguished from
conventional cementitious materials by multiple cracking and strain hardening
behaviors. Characteristics of HPFRCC
include crack width controlling capability keeping the crack width within a
permissible range. HPFRCC with
it excellent mechanical performance, has been applied to bridge decks and
building dampers. It has also
been used for surface repair of concrete dams, water channels, and retaining
walls because of its finely distributed cracking behavior. Appropriate use of the tensile
performance can develop a structural component excellent in both durability
and mechanical performance. The
Japan Society of Civil Engineers (JSCE) has published the world’s first
design recommendations for HPFRCC.
English publication for this recommendation will be published soon. |
CONTENTS
Chapter 1 General
Scope,
Terminology, Notations
Chapter 2 Design Basics
General, Design service life,
Principles of performance verification, Safety factors
Chapter 3 Material Properties for
Design
General, Strength and
strain, Stress-strain curves, Young’s modulus, Poisson’s ratio, Thermal
characteristics, Shrinkage, Creep, Fatigue, Maximum crack width
Chapter 4 Load
General
Chapter 5 Structural Analysis
General, Response value
calculation for safety performance verification, Response value calculation for
serviceability performance verification
Chapter 6 Safety Verification of
Structures
General, Examination of
safety against bending moment and axial force, Examination of safety against
shear forces, Examination of safety against torsion, Examination of safety
against fatigue, Examination of safety against rigid body stability
Chapter 7 Serviceability
Verification of Structures
General, Calculation of
stress and strain, Stress limit value, Strain limit value, Examination of
tensile strain, Examination of cracking, Examination of displacement and
deformation, Examination of vibration
Chapter 8 General Structural
Details
General, Concrete cover,
Spacing of steel bars, Development of steel bars, Splices in reinforcement,
Construction joint
Chapter 9 Verification for
Resistance to Environmental Actions
General, Verification of
steel corrosion due to carbonation, Verification of chloride induced steel
corrosion, Verification of freezing and thawing damages, Verification of
water-tightness, Verification of resistance to chemical attacks, Verification
of alkali-aggregate reactions, Verification of fire resistance
Chapter 10 Concreting Work
General, Materials, Mix
proportions, Manufacture, Transportation, Placement, Finishing, Curing,
Formwork and shoring, Cold weather concreting, Hot weather concreting,
Inspection
Chapter 11 Shotcrete
General, Materials, Mix
proportions, Manufacture, Preparation of concrete surface, Transportation,
Spraying, Finishing, Curing, Inspection
Testing and Evaluation Methods
Testing method 1.
Preparation of specimen for strength tests
Testing method 2.
Testing method for uniaxial direct tensile strength
Testing method 3. Testing
method for crack width of HPFRCC -Average and maximum crack widths
Testing method 4. Testing
method for crack width of HPFRCC -Variation of crack width
Appendix