UHPCC UNDER IMPACT AND BLAST.

Preface
Contents
Abbreviations
Nomenclature
1 Static Mechanical Properties of UHPCC
	1.1 Introduction
	1.2 Test Program
		1.2.1 Raw Materials and Mixture Proportions
		1.2.2 Specimen Preparation and Curing
	1.3 Instrumentation and Loading Scheme
		1.3.1 Cubic Compressive Test
		1.3.2 Axial Compressive Test
		1.3.3 Direct Tensile Test
		1.3.4 Four-Point Flexural Test
		1.3.5 Three-Point Flexural Test
	1.4 Test Results and Discussion
		1.4.1 Compression Test
		1.4.2 Direct Tension Test
		1.4.3 Four-Point Flexure Test
		1.4.4 Three-Point Flexure Test
	1.5 Summary
	References
2 Dynamic Compressive Mechanical Properties of UHPCC
	2.1 Introduction
	2.2 Specimen Preparation
	2.3 SHPB Test
		2.3.1 Test Device
		2.3.2 Test Technique
	2.4 Test Results and Discussions
		2.4.1 Stress Equilibrium
		2.4.2 Strain Rate Determination
		2.4.3 Dynamic Failure Pattern
		2.4.4 Dynamic Stress–Strain Curve
		2.4.5 Dynamic Increase Factor
		2.4.6 Energy Absorption Capacity
	2.5 Visco-Elastic Damage Model
		2.5.1 Nonlinear Visco-Elastic Model
		2.5.2 Model Calibration and Validation
	2.6 Summary
	References
3 Dynamic Tensile Mechanical Properties of UHPCC
	3.1 Introduction
	3.2 Specimen Preparation
	3.3 Dynamic Spalling Test
		3.3.1 Test Device
		3.3.2 Test Technique
	3.4 Test Results and Discussions
		3.4.1 Dynamic Failure Patterns
		3.4.2 Dynamic Spalling Strength
		3.4.3 Relations Between the Critical Time to Fracture and Dynamic Spalling Strength
		3.4.4 Dynamic Increase Factor
	3.5 Summary
	References
4 Triaxial Compressive Behavior of UHPCC and Application in the Numerical Analyses of Projectile Impact
	4.1 Introduction
	4.2 A Review of the Existing Works on Triaxial Behavior of Concrete
	4.3 Mixing Optimization of UHPCC and Triaxial Compression Test
		4.3.1 Compositions
		4.3.2 Mixing Procedure
		4.3.3 Triaxial Compression Test
	4.4 Results and Analysis
		4.4.1 Failure Pattern
		4.4.2 Stress–Strain Curve
		4.4.3 Failure Criteria
		4.4.4 Toughness
	4.5 Applications in the Numerical Analyses
		4.5.1 Brief Introduction of HJC Constitutive Model
		4.5.2 HJC Model Parameters for HSC
		4.5.3 Validations
	4.6 Summary
	References
5 Projectile Penetrations into Coarse Aggregated UHPCC Targets
	5.1 Introduction
	5.2 Basalt Aggregated UHPCC Target
		5.2.1 Target
		5.2.2 Projectile
		5.2.3 Test Setup
		5.2.4 Test Results
		5.2.5 Discussions
	5.3 Corundum Aggregated UHPCC Target
		5.3.1 Target and Projectile
		5.3.2 Test Results
		5.3.3 Discussions
	5.4 Numerical Simulations Based on 3D Mesoscopic Concrete Model
		5.4.1 3D Mesoscopic Concrete Model
		5.4.2 Validations
		5.4.3 Impact Resistance of Different Aggregated UHPC
	5.5 Summary
	References
6 Impact Resistance of Basalt Aggregated UHP-SFRC/Fabric Composite Panels Against Small Caliber Arm
	6.1 Introduction
	6.2 Bullet Perforation Test
		6.2.1 Bullet
		6.2.2 UHP-BASFRC Panels
		6.2.3 Fabric Strengthening
		6.2.4 Test Setup
	6.3 Test Results
		6.3.1 Damage of Target
		6.3.2 Dimension of Crater
		6.3.3 Perforation Limit
		6.3.4 Recovered Bullet
		6.3.5 Damage of Aluminum Plate
	6.4 Discussions
		6.4.1 Crater Dimensions
		6.4.2 Terminal Ballistic Parameter
		6.4.3 Fabric Effect
	6.5 Summary
	References
7 Impact Resistance of Armsector Steel/Ceramic/UHPCC Layered Composite Targets Against 30CrMnSiNi2A Steel Projectiles
	7.1 Introduction
	7.2 Impact Test on 10CrNi3MoV21A Armor Steel/SiC Ceramic/UHPCC Composite Targets and Numerical Simulations
		7.2.1 Impact Test
		7.2.2 Numerical Simulations
	7.3 Impact Test on NP450 Armor Steel/UHPCC and NP500 Armor Steel/UHPCC Composite Targets and Numerical Simulations
		7.3.1 Impact Test
		7.3.2 Numerical Simulations
	7.4 Summary
	References
8 Response of UHPCC-FST Subjected to Low-Velocity Impact
	8.1 Introduction
	8.2 Test Program
		8.2.1 UHPCC-FST Specimens
		8.2.2 Axial Compression Test
		8.2.3 Drop-Hammer Impact Test
	8.3 Test Results and Discussions
		8.3.1 Axial Compression
		8.3.2 Lateral Impact Resistance
		8.3.3 Impact Force–Time History
		8.3.4 Deflection-Time History
	8.4 Calibration of K&C Model Parameters for UHPCC
		8.4.1 Brief Introduction of K&C Model
		8.4.2 Calibration
	8.5 Numerical Simulation
		8.5.1 Present Test
		8.5.2 Yoo et al. (2015) Test
	8.6 Summary
	References
9 Dynamic Responses of Reinforced UHPCC Members Under Low-Velocity Lateral Impact
	9.1 Introduction
	9.2 Test Program
		9.2.1 Specimen Fabrication
		9.2.2 Drop-Hammer Impact Test
	9.3 Test Results and Discussions
		9.3.1 Failure Mode
		9.3.2 Impact Force–Time History
		9.3.3 Deflection-Time History
		9.3.4 Energy Dissipation
	9.4 Numerical Simulation
		9.4.1 FE Model
		9.4.2 Calibration
		9.4.3 Comparisons of Numerical Results with Test Data
	9.5 Further Validations
		9.5.1 Reinforced UHPC Members
		9.5.2 UHPC-FST Members
	9.6 Summary
	References
10 Residual Axial Capacity of UHPCC-FST Column Under Contact Explosion
	10.1 Introduction
	10.2 Review of the Existing Works
	10.3 UHPCC-FST Columns
		10.3.1 Fabrications
		10.3.2 Steel Tube
		10.3.3 UHPCC
	10.4 Field Contact Explosion Test
		10.4.1 Test Setup
		10.4.2 Test Results
	10.5 Axial Compression Test
		10.5.1 Test Setup
		10.5.2 Test Results
	10.6 Numerical Simulation
		10.6.1 FE Model
		10.6.2 Material Model
		10.6.3 Loading Scheme
	10.7 Comparisons with Test Data
		10.7.1 Damage and Failure Modes of Columns
		10.7.2 Residual Axial Capacity and Failure Mode of Columns
	10.8 Parametric Study
		10.8.1 Steel Tube Thickness and Strength
		10.8.2 Core Concrete Strength and Cross-Sectional Diameter
		10.8.3 Influence of Varied Parameters on Damage Index
	10.9 Summary
	References
11 Experimental and Numerical Study of UHPCC-FST Columns Subjected to Close-Range Explosion
	11.1 Introduction
	11.2 Explosion Test on UHPCC-FST Column
		11.2.1 Specimens
		11.2.2 Test Setup
		11.2.3 Test Results and Analyses
	11.3 Analytical Methods for Predicting the Dynamic Responses of UHPCC-FST Columns
		11.3.1 ALE Method
		11.3.2 Velocity Method
		11.3.3 SDOF Method
		11.3.4 Comparisons of Predictions by Different Methods
	11.4 Further Numerical Analyses and Discussion
	11.5 Summary
	References
12 Experimental Study on the Residual Seismic Resistance of UHPCC Filled Steel Tube (UHPCC-FST) After Contact Explosion
	12.1 Introduction
	12.2 UHPCC-FST Specimens
		12.2.1 Steel Tube
		12.2.2 UHPCC
		12.2.3 Fabrications
	12.3 Contact Explosion Test
		12.3.1 Test Setup
		12.3.2 Test Results and Discussions
	12.4 Low-Frequency Cyclic Loading Test
		12.4.1 Test Setup
		12.4.2 Test Results and Discussions
	12.5 Assessment of Residual Seismic Resistance of the Post-blast Column
	12.6 Summary
	References
13 Experimental and Numerical Studies on Dynamic Behavior of Reinforced UHPCC Panel Under Medium-Range Explosions
	13.1 Introduction
	13.2 Review of the Existing Work
	13.3 Field Blast Test
		13.3.1 Specimen
		13.3.2 Test Setup
		13.3.3 Test Results and Discussions
	13.4 Numerical Simulation
		13.4.1 FE Model
		13.4.2 Material Model of UHPCC
		13.4.3 Material Model of NSC
		13.4.4 Material Models for Rebar and Support
	13.5 Comparisons of Numerical Results with Test Data
		13.5.1 Overpressures-Time History
		13.5.2 Deflection-Time History
		13.5.3 Post-blast Damage
	13.6 Summary
	References
14 Constitutive Modelling of UHPCC Material Under Impact and Blast Loadings
	14.1 Introduction
	14.2 UHPCC Material Model
		14.2.1 Brief Introduction of the Original Kong-Fang Concrete Model
		14.2.2 New Tensile Damage Model
		14.2.3 Parameter Calibration
	14.3 Single Element Tests
		14.3.1 Unconfined Uniaxial Tests
		14.3.2 Triaxial Compression Test
	14.4 Experimental Validation
		14.4.1 UHPCC-FST Column Subjected to Low Speed Impact
		14.4.2 UHPCC-FST Column Subjected to Near Explosion
		14.4.3 Reinforced UHPCC Slab Subjected to Blast Loading
	14.5 Summary
	References