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Report rep020 : Engineering and Transport Properties of the Interfacial Transition Zone in Cementitious Composites - State-of-the-Art Report of RILEM TC 159-ETC and 163-TPZ


Title: Engineering and Transport Properties of the Interfacial Transition Zone in Cementitious Composites - State-of-the-Art Report of RILEM TC 159-ETC and 163-TPZ
Edited by M. G. Alexander, G. Arliguie, G. Ballivy, A. Bentur and J. Marchand
ISBN: 2-912143-08-X
e-ISBN: 2351580400
Pages: 404
Publication date: 1999

A key question that need to be resolved is to what extent the existence of ITZ has any practical influences on the engineering properties of cementitious materials, or is it just a peculiarity of academic interest. The question arose in view of the fact that for traditional concretes, the properties could be reasonably accounted for by the bulk properties of the cementitious matrix. To resolve this issue two committees were set up by RILEM, one dealing with engineering properties (TC 159-ETC: Engineering of the Interfacial Transition Zone in Cementitious Composites) and the other with transport properties which are related to durability (TC 163-TPZ: Transport Properties of the Interfacial Transition Zone).

This book is intended to highlight properties of practical interest, where the structure of the ITZ has a significant impact and to provide input on methods to engineer the ITZ in order to modify these properties. This State-of-the-Art Report deals with the mechanical properties of cementitious composites (strength, ductility, bond, fracture characteristics) made of a cementitious binder with different types of inclusions (normal aggregates, lightweight aggregates, reinforcing steel bars and fibers), and with the durability performance of cementitious systems which are controlled to a large extent by transport characteristics. This book also provides a special input on the modeling of the ITZ to predict its microstructure and influence on the properties of the composite.


Contents


Preface
Author(s): M.G. Alexander, G. Arliguie, G. Ballivy, A. Bentur, J. Marchand
Pages: XIII - XIV

Part 1 - Introduction


Characterisation of the ITZ and its quantification by test methods
Author(s): K. Scrivener
Pages: 3 - 15

Part 2 - Interfacial transistion zone and mechanical properties


Test methods and modelling for determining the mechanical properties of the ITZ in concrete
Author(s): J.G.M. van Mier, A. Vervuurt
Pages: 19 - 52

Normal and high strengh concretes with conventional aggregates
Author(s): B. Lagerblad, K.O. Kjellsen
Pages: 53 - 70

Normal and high strengh concretes with lightweight aggregates
Author(s): A. Katz, A. Bentur, K.O. Kjellsen
Pages: 71 - 88

The interfacial transition zone in fibre reinforced cement and concrete
Author(s): A. Bentur, S. Mindess, N. Banthia
Pages: 89 - 109

Part 3 - Interfacial transition zone and transport properties


Fundamentals of transport properties of cement-based materials and general methods to study transport properties
Author(s): L.-O. Nilsson, J.-P. Ollivier
Pages: 113 - 147

Transport by permeation
Author(s): M. Carcasses, J.-P Ollivier
Pages: 149 - 156

Influence of ITZ on ionic diffusion and leaching
Author(s): J. Marchand, A. Delagrave
Pages: 157 - 171

Conductivity and microstructure of the interfacial transition zone measured by impedance spectroscopy
Author(s): J.D. Shane, T.O. Mason, H.M. Jenning
Pages: 173 - 203

Gas diffusion through porous media
Author(s): Y.F. Houst
Pages: 205 - 217

Moisture transport
Author(s): G. Hebenblad
Pages: 219 - 237

Part 4 - Influence of microcracks in ITZ on durability


Microcracking at the ITZ
Author(s): R. François, G. Arliguie
Pages: 241 - 258

Modelling of the development of microcracks due to alkali aggregate reaction
Author(s): J.-P. Bournazel
Pages: 259 - 265

Modelling the effect of interfaces on the mechanical behavior of reinforced concrete structures affected by steel corrosion
Author(s): I. Petre-Lazar, B. Gérard, J. Marchand
Pages: 267 - 276

Modelling the influence of ITZ on water leaching
Author(s): B. Gérard, C. Le Bellégo
Pages: 277 - 288

Incidence of ITZ microcracks created by service load on transport properties of concrete
Author(s): R. François, G. Arliguie
Pages: 289 - 307

Incidence of ITZ microcracks created by freezing-thawing on properties of concrete
Author(s): M. Basheer
Pages: 309 - 320

Modelling the influence of chemical reactions at the interface on engineering properties
Author(s): J.-P. Bournazel
Pages: 321 - 335

Relationship between ITZ transport properties and durability of cementitious composites
Author(s): G. Ballivy
Pages: 337 - 345

Part 5 - Modelling


Computer modelling of interfacial transition zone: microstructure and properties
Author(s): D.P. Bentz, E.J. Garboczi
Pages: 349 - 385