SP-220: Autogenous Deformation of Concrete

SP-220: Autogenous Deformation of Concrete

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Editors: Ole Mejlhede Jensen, Dale P. Bentz & Pietro Lura

Description

Autogenous deformation of concrete is the free deformation of sealed concrete at a constant temperature. A number of observed problems with early-age cracking of high-performance concrete can be attributed to this phenomenon. During the last 10 years, this has led to an increased focus on autogenous deformation within both concrete practice and concrete research. Since 1996, there has been enough interest to hold yearly international conferences devoted to this subject.

The papers in this publication were presented at two consecutive half-day sessions at the American Concrete Institute's Fall Convention in Phoenix, Arizona, October 2002. All papers were reviewed according to ACI procedures. This publication and the sessions were sponsored by ACI Committee 236, Material Science of Concrete. The 12 presentations from eight different countries indicate the broad, global research efforts dealing with autogenous deformation, and the well-attended - of up to 90 people - show that this interest is shared by the general concrete community. Attendees left with an understanding of the complexity of the autogenous deformation of concrete. The sessions showed that cooperation and more research are needed.

At the ACI 2002 Fall Convention, the international materials research organization, RILEM, took steps to promote further research and cooperation within this area. Two technical committees held initial meetings with the involvement of many ACI members. More collaborative research will be carried out.

Copenhagen, Denmark, and Santa Cruz, Bolivia, October 2003.

Keywords: autogenous deformations; calcium hyroxide; cement paste; chemical shrinkage; degree of hydration; early age; microstructure; temperature; water-to-cement ratio

Document Details

Publication Year: 2004

Pages: 202.00

ISBN: 9780870311437

Categories: Cracking

Formats: PDF

Table of Contents

SP-220—1: From Chemical and Microstructural Evolution of Cement Pastes to the Development of Autogenous Deformations- by V. Baroghel-Bouny, P. Mounanga, A. Loukili, and A. Khelidj

SP-220—2: Quantifying Volume Change, Stress Development, and Cracking Due to Early-Age Autogenous Shrinkage- by B. Pease, A. B. Hossain, and J. Weiss

SP-220—3: Measuring Non-Drying Bulk Shrinkage of Cement Paste and

Mortar Using Archimedes’ Principle- by K. S. Douglas and K. C. Hover

SP-220—4: Effect of Cement Type on Autogenous Deformation of Cement-Based Materials- by P. Lura, Y. E. Guang, and K. van Breugel

SP-220—5: Controlling Plastic and Autogenous Shrinkage in High Performance Concrete Structures by an Early Water Curing- by P.-C. Aïtcin, G. Haddad, and R. Morin

SP-220—6: Unit Processes of Shrinkage Behavior Based on Dynamical Analysis of Cement Paste in Different Maturity- by E. Tazawa

SP-220—7: Measurement and Modeling of Concrete Tensile Creep and Shrinkage at Early Age- by M. D. D’Ambrosia, D. A. Lange, and Z. C. Grasley

SP-220—8: Test Device for Studying the Early-Age Stresses and Strains in Concrete- by J.-P. Charron, B. Bissonnette, J. Marchand, and M. Pigeon

SP-220—9: Effects of Silica Fume and Temperature on Autogenous Deformation of High Performance Concrete- by Ø. Bjøntegaard and E. J. Sellevold

SP-220—10: Why Does Ultrahigh-Performance Concrete (UHPC) Exhibit Such a Low Shrinkage and Such a Low Creep?- by P. Acker

SP-220—11: Shrinkage and Creep of High-Performance Self-Compacting Concrete (HPSCC)- by B. S. M. Persson

SP-220—12: Assessment of Water Migration Distance in Internal Curing of High-Strength Concrete- by S. Zhutovsky, K. Kovler, and A. Bentur

ERRATA INFO

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