Ultra-high performance concrete UPHC: fundamentals, design, examples

Physical dimension

Summary / review / table of contents

Ultra-High Performance Concrete UHPC: Fundamentals --
Design --
Examples;
Contents;
Editorial;

1 Introduction;

2 Principles for the production of UHPC;
2.1 Development;
2.2 Basic material concepts;
2.2.1 Microstructure properties;
2.2.2 Grading optimization;
2.3 Raw materials;
2.3.1 Cement;
2.3.2 Reactive admixtures;
2.3.2.1 Silica fume;
2.3.2.2 Ground granulated blast furnace slag;
2.3.3 Inert admixtures;
2.3.4 Superplasticizers;
2.3.5 Steel fibres;
2.4 Mix composition;
2.5 Mixing;
2.6 Curing and heat treatment;
2.7 Testing;
2.7.1 Fresh concrete.
2.7.2 Compressive and flexural tensile strengths

3 Mechanical properties of the hardened concrete;
3.1 General; 3.2 Behaviour in compression;
3.2.1 UHPC without fibres;
3.2.2 UHPC with steel fibres;
3.2.3 Further factors affecting the compressive strength;
3.2.3.1 Geometry of test specimen and test setup;
3.2.3.2 Heat treatment;
3.3 Behaviour in tension;
3.3.1 Axial (concentric) tension loads;
3.3.2 Flexural tensile strength;
3.3.3 Derivation of axial tensile strength from compressive strength;
3.3.4 Derivation of axial tensile strength from bending tests;
3.3.5 Splitting tensile strength.
3.3.6 How fibre geometry and orientation influence the behaviour of UHPC in tension
3.3.7 Converting the stress-crack width relationship into a stress-strain diagram;
3.3.8 Interaction of fibres and bar reinforcement;
3.4 Shrinkage;
3.5 Creep;
3.6 Multi-axial stresses;
3.7 Fatigue behaviour;
3.8 Dynamic actions;
3.9 Fire resistance;
3.10 UHPC with combinations of fibres ('fibre cocktails');

4 Durability;
4.1 Microstructure;
4.2 Resistance to aggressive media;
4.3 Classification in exposure classes;

5 Design principles;
5.1 Influence of fibre distribution and fibre orientation.
5.2 Analyses for the ultimate limit state
5.2.1 Safety concept;
5.2.2 Simplified stress-strain curve for design;
5.2.2.1 Compression actions;
5.2.2.2 Tension actions;
5.2.3 Design for bending and normal force;
5.2.4 Design for shear;
5.2.4.1 Tests at the University of Kassel;
5.2.4.2 Tests at RWTH Aachen University;
5.2.4.3 Tests at Delft University of Technology;
5.2.5 Punching shear;
5.2.6 Strut-and-tie models;
5.2.6.1 Load-carrying capacity of struts;
5.2.6.2 Load-carrying capacity of ties;
5.2.6.3 Load-carrying capacity of nodes;
5.2.7 Partially loaded areas;
5.2.8 Fatigue.
5.3 Analyses for the serviceability limit state
5.3.1 Limiting crack widths;
5.3.2 Minimum reinforcement;
5.3.3 Calculating deformations;

6 Connections;
6.1 General;
6.2 Dry joints;
6.3 Glued joints;
6.4 Wet joints;
6.5 Grouted joints;
6.6 Adding UHPC layers to existing components to upgrade structures;

7 Projects completed;
7.1 Bridges;
7.1.1 Canada;
7.1.1.1 Bridge for pedestrians/cyclists, Sherbrooke (1997);
7.1.1.2 Glenmore/Legsby footbridge, Calgary (2007);
7.1.2 France;
7.1.2.1 Road bridge, Bourg-l{u1973}-Valence;
7.1.2.2 Pont du Diable footbridge (2005).

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