## Microstructure of cement-based systems/Bonding and interfaces in cementitious materials: symposia held November 28-December 1, 1994, Boston, Massachusetts, U.S.A.This book continues the MRS series on characteristics and properties of cementitious materials. In Part I, recent advances in microstructure and related characterization of cementitious systems are the focus. Topics include: microstructures of "normal" cement systems; microstructure of 'unusual' cement systems; image analysis, modelling and fractal analysis applications; and assessment of pore structures. Part II features presentations on interfacial microstructures, as well as information on elastic and fracture properties, transport properties, and the effects of interfaces on fiber-reinforced systems. |

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Page 409

Thus: log £„ = V, log E,+ Vp log Ep + V, log E, ( 1 ) where E„ is dynamic

of elasticity of mortar (determined experimentally) E, is dynamic

elasticity of sand (determined experimentally) Ep is dynamic

of ...

Thus: log £„ = V, log E,+ Vp log Ep + V, log E, ( 1 ) where E„ is dynamic

**modulus**of elasticity of mortar (determined experimentally) E, is dynamic

**modulus**ofelasticity of sand (determined experimentally) Ep is dynamic

**modulus**of elasticityof ...

Page 412

In reference to Figure 2, the dynamic shear

the dynamic

The dynamic shear

In reference to Figure 2, the dynamic shear

**modulus**shows the same trends asthe dynamic

**modulus**of elasticity and the same conclusions ( 1 , 2, and 3) applyThe dynamic shear

**modulus**of interfacial zone falls between 0 I and 0 7 (* 106 ...Page 416

The measured bulk

function of the sand concentration. If the matrix of each specimen was

homogeneous, the effective bulk

near the ...

The measured bulk

**moduli**of the eleven specimens are shown in Fig. 2, as afunction of the sand concentration. If the matrix of each specimen was

homogeneous, the effective bulk

**moduli**of the mortar would be expected to lienear the ...

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### Contents

APPLICATION OF AUTOMATED IMAGE ANALYSIS TO | 3 |

A REEVALUATION OF HARDENED CEMENT PASTE | 13 |

AN APPROACH TO QUANTITATIVE IMAGE ANALYSIS | 23 |

Copyright | |

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1995 Materials Research air voids andesite bond strength bulk cement paste C-S-H gel calcium calcium hydroxide carbonate cement paste chemical clinker composite compressive strength concentration Concr crack crystals cured curve debonding decrease density diameter dielectric dielectric constant diffusion dynamic modulus effect elastic elastic moduli embedded length energy ettringite experimental fiber reinforced fibres fly ash fracture surface Garboczi grains groundmass hardened hydration products image analysis increase interfacial transition zone interfacial zone layer load Materials Research Society matrix measured microcracks microscope microstructure mixes modulus mortar observed parameters permeability phase phenograins pore size distribution porosity porous portland cement portlandite Proc pullout rock samples sand scanning electron microscope shear shown in Figure shows silica fume solution specimens structure sucrose superplasticizer Symp Table tensile thaumasite thickness values volume fraction w/c ratio water-cement ratio wood fiber zeolite