## Microstructure of Cement-Based Systems: Volume 370: Bonding and Interfaces in Cementitious MaterialsS. Diamond, F. P. Glasser, S. Mindess, L. R. Roberts, J. P. Skalny, L. D. Wakeley 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 112

The toughening

1 / 2 where EG is calculated from equations 3 – 8 with Ki equal to 1 . 0 .

Toughening

The toughening

**ratio**was determined by ( 9 ) Toughening**ratio**= ( average EG )1 / 2 where EG is calculated from equations 3 – 8 with Ki equal to 1 . 0 .

Toughening

**ratio**results are shown in Table V . Comparison of the toughening**ratio**to the ...Page 383

The dashed lines show the mean value of the results of the mortars with W / B

the lower the W / B

The dashed lines show the mean value of the results of the mortars with W / B

**ratios**0 . ... As can be observed , although in some cases the results indicate thatthe lower the W / B

**ratio**, the higher the bond - strength , the results do not show ...Page 525

From the

one can deduce the change in CH / C - S - H on the matrix surface during the

fiber debonding / pullout process . Figure 10 shows the Ca / Si

pullout ...

From the

**ratio**of the area under the Ca and Si peaks on the X - ray spectrum ,one can deduce the change in CH / C - S - H on the matrix surface during the

fiber debonding / pullout process . Figure 10 shows the Ca / Si

**ratio**at the fourpullout ...

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addition aggregate amount analysis applied average bending bond bulk calcium calculated carbonate cement paste cementitious changes chemical clinker compared composite compressive concentration concrete containing crack crystals cured curve decrease density determined developed diameter diffusion distribution effect elastic electron energy experimental fiber Figure formation fracture surface given grains hardened higher hydration increase indicate influence interfacial zone length load lower materials matrix measured mechanical method microstructure mixes modulus mortar observed obtained occurs parameters particles performance phase pore porosity portland cement prepared present Proc properties pullout range ratio reinforced relative Research respectively rock samples sand shown shows silica fume similar solution specimens steel strength stress structure surface Table technique thickness transition zone values voids volume volume fraction