Description
This report provides a synopsis of the existing testing methodologies for the determination of mechanical properties of hardened fiber-reinforced concrete (FRC). This report applies to the mechanical properties of conventionally mixed and placed FRC, including fiber-reinforced self-consolidating concrete (FRSCC), or fiber-reinforced shotcrete (FRS) using steel, glass, polymeric, and natural fibers.
The objective is to enable manufacturers to characterize the mechanical properties of hardened FRC and encourage researchers and testing laboratories to adopt common and unified test methods to build a meaningful database of mechanical properties of hardened FRC materials and products. Test results from the test procedures used in this report are not intended for the design of FRC structures, but to gain a better understanding of factors influencing the determination of their mechanical properties and of FRCs and FRC products.
Keywords: compressive strength; fiber pullout; fiber-reinforced concrete; flexural fatigue resistance; flexural strength; impact resistance; multiaxial behavior; shear and torsion; tensile strength; toughness.
Table of Contents
CHAPTER 1—INTRODUCTION AND SCOPE
1.1—Introduction
1.2—Scope
CHAPTER 2—NOTATION AND DEFINITIONS
2.1—Notation
2.2—Definitions
CHAPTER 3—SAMPLING AND SPECIMEN PREPARATION
3.1—General
3.2—Test specimens
3.3—Sample size
CHAPTER 4—COMPRESSIVE STRENGTH, MODULUS OF ELASTICITY, AND POISSON’S RATIO
4.1—General
4.2—Compressive stress-strain curve
CHAPTER 5—TENSILE BEHAVIOR
5.1—General
5.2—Direct tension tests
5.3—Indirect tension tests
CHAPTER 6—FLEXURAL BEHAVIOR: STRENGTH, TOUGHNESS, AND CLOSED-LOOP TESTS
6.1—General
6.2—Flexural strength
6.3—Flexural toughness and residual post-cracking strength
CHAPTER 7—INTERFACE, BOND SLIP, AND FIBER PULLOUT
7.1—General
7.2—Pullout tests
CHAPTER 8—HIGH STRAIN RATE TESTING
8.1—General
8.2—High-speed tension tests
8.3—Split Hopkinson (pressure) bar test
CHAPTER 9—IMPACT PERFORMANCE TESTING
9.1—General
9.2—Noninstrumented impact tests
9.3—Instrumented impact tests
CHAPTER 10—FATIGUE RESISTANCE
10.1—General
10.2—Uniaxial compression fatigue
10.3—Biaxial compression fatigue
10.4—Tensile fatigue
10.5—Flexural fatigue
CHAPTER 11—SHEAR AND TORSION
CHAPTER 12—BIAXIAL/MULTIAXIAL BEHAVIOR
CHAPTER 13—CONCLUSIONS
CHAPTER 14—REFERENCES