Microstructure of Cement-Based Systems: Volume 370: Bonding and Interfaces in Cementitious MaterialsThis 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 255
... dielectric constant , which is related to the capillary pore size and distribution . High values of the relative dielectric constant ( ~ 105 ) observed in cement paste at early hydration times are the direct result of the microstructure ...
... dielectric constant , which is related to the capillary pore size and distribution . High values of the relative dielectric constant ( ~ 105 ) observed in cement paste at early hydration times are the direct result of the microstructure ...
Page 257
... dielectric constant , & s is the dielectric constant of the material in the gap ( d ) , & is the permittivity of free space , and A is the area of the electrodes . The effective dielectric constant is then : εeff = Es ( D / d ) ( 2 ) ...
... dielectric constant , & s is the dielectric constant of the material in the gap ( d ) , & is the permittivity of free space , and A is the area of the electrodes . The effective dielectric constant is then : εeff = Es ( D / d ) ( 2 ) ...
Page 261
... dielectric constant vs. isopropanol exchange time for a neat w / c = 0.35 OPC paste hydrated for 24 hours [ 13 ] . 0 0 2 + 6 8 10 0 12 Time ( hours ) When the solvent exchange process has essentially stopped and the electrical ...
... dielectric constant vs. isopropanol exchange time for a neat w / c = 0.35 OPC paste hydrated for 24 hours [ 13 ] . 0 0 2 + 6 8 10 0 12 Time ( hours ) When the solvent exchange process has essentially stopped and the electrical ...
Contents
APPLICATION OF AUTOMATED IMAGE ANALYSIS TO | 3 |
A REEVALUATION OF HARDENED CEMENT PASTE | 13 |
AN APPROACH TO QUANTITATIVE IMAGE ANALYSIS | 23 |
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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 cementitious chemical clinker composite compressive strength concentration Concr crack crystals cured curve debonding density diameter dielectric 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 load Materials Research Society matrix measured microcracks microscope microstructure mixes modulus mortar observed parameters phase 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 stress structure sucrose superplasticizer Symp Table tensile thaumasite thickness values volume fraction w/c ratio water-cement ratio wood fiber yarn zeolite