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

Author

Additional Author(s)

• Fehling, Ekkehard
• Schmidt, Michael
• Walraven, Joost

Publisher

Berlin, Germany: Ernst and Sohn, 2014

Language

English

ISBN

9783433030875

Series

Subject(s)

• HIGH STRENGTH CONCRETE

Notes

. Bibliography: p. 165-182. Index: p. 183-188

Abstract

Selected chapters from the German concrete yearbook are now being published in the new English "Beton-Kalender Series" for the benefit of an international audience.
Since it was founded in 1906, the Ernst & Sohn "Beton-Kalender" has been supporting developments in reinforced and prestressed concrete. The aim was to publish a yearbook to reflect progress in "ferro-concrete" structures until - as the book's first editor, Fritz von Emperger (1862-1942), expressed it - the "tempestuous development" in this form of construction came to an end. However, the "Beton-Kalender" quickly became the chosen work of reference for civil and structural engineers, and apart from the years 1945-1950 has been published annually ever since.
Ultra high performance concrete (UHPC) is a milestone in concrete technology and application. It permits the construction of both more slender and more durable concrete structures with a prolonged service life and thus improved sustainability.
This book is a comprehensive overview of UHPC - from the principles behind its production and its mechanical properties to design and detailing aspects. The focus is on the material behaviour of steel fibre-reinforced UHPC. Numerical modelling and detailing of the connections with reinforced concrete elements are featured as well. Numerous examples worldwide - bridges, columns, fa�ades and roofs - are the basis for additional explanations about the benefits of UHPC and how it helps to realise several architectural requirements.
The authors are extensively involved in the testing, design, construction and monitoring of UHPC structures. What they provide here is therefore a unique synopsis of the state of the art with a view to practical applications.

Physical Dimension

Number of Page(s)

188 p.

Dimension

24 cm.

Other Desc.

ill.

Summary / Review / Table of Content

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).

Exemplar(s)

#	Accession No.	Call Number	Location	Status
1.	00407/18	624.1834 Ult	Library - 7th Floor	Available