Pore Structure
作者： James J. Beaudoin , Jacques Marchand
DOI: 10.1016/B978-081551437-4.50017-5
关键词: Porosity 、 Cement 、 Microstructure 、 Adsorption 、 Analytical chemistry 、 Dielectric spectroscopy 、 Porosimetry 、 Microporous material 、 Materials science 、 Composite material 、 Portland cement
摘要: This chapter focuses on six techniques that have been employed to describe the microstructure of cement paste: helium inflow, gas adsorption, ac impedance spectroscopy, nuclear magnetic resonance, mercury porosimetry, and solvent replacement. The results inflow experiments can be used examine validity pore structure models for paste. Gas adsorption extensively in science characterize hardened systems. Methods based interaction water vapor or other adsorbates with solid surfaces microporous adsorbents such as hydrated Portland are briefly described chapter. Alternating current spectroscopy (ACIS) is widely both fundamental applied electrochemical studies. technique involves application a small amplitude sinusoidal voltage signal system; response potential generated recorded. Mercury-intrusion porosimetry appears most commonly characterization technique. principle non-wetting liquids only intrude porous material if certain pressure system.
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