Bibliography - G. Simmons

1. Scherer, George, J. J. Valenza II, and G. Simmons, 2007: New Methods to Measure Liquid Permeability in Porous Materials. Cement and Concrete Research, 37(3), doi:10.1016/j.cemconres.2006.09.020 386-397
   [ Abstract ]

   Several novel methods have recently been proposed for rapid measurement of the liquid permeability of saturated cement paste, mortar and concrete. The relative merits of the techniques are discussed, and some recent results obtained on pastes and mortars are presented. The low permeabilities seen in cement paste are inconsistent with the pore size distributions measured following drying, indicating that the pore structure is significantly changed by drying.

2. Xu, S., G. Simmons, and George Scherer, 2004: Thermal Expansion and Viscosity of Confined Liquids. Materials Research Society, http://www.mrs.org/s_mrs/sec_subscribe.asp?CID=2631&DID=116771&action=detail, 790, 85-92
   [ Abstract ]

   The thermal expansion and viscosity of water and salt solutions in porous silica glasses have been systematically investigated, and the effect of salts on the properties of water in confined geometry has been addressed. A dilatometric method has been devised and utilized to measure the thermal expansion of confined liquids. A beam-bending method that was developed to study the permeability of porous bodies has been used to measure the relative viscosity of salt solutions to water inside the silica pores. This work has demonstrated that water when confined in nanopores shows anomalous behavior and its thermal expansion is higher than bulk water. This work has also suggested that the presence of ions in water could enhance the anomaly of water in confined space and the extent of the ion effect is dependent on the ion charge.

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