In this study, linear alkyl-benzene calcium sulfonate nanoparticles were made using linear alkylbenzene. Calcium sulfonate nanoparticles are widely used as an additive in a variety of engine oils and have cleansing, anti-wear and anti-oxidant properties and anti-corrosion properties. In this method, a sulfonation set up was constructed and sulfonation reaction was carried out both directly and ...

0022-1694/$ see front matter 2012 Elsevier B.V. A http://dx.doi.org/10.1016/j.jhydrol.2012.03.015 ⇑ Corresponding author at: Department of Geology a University, 98 Beechurst Ave., Morgantown, WV 26506 fax: +1 304 293 6522. E-mail addresses: [email protected] [email protected] (H.M. Edenborn). Dissolved CO2 in groundwater is frequently supersaturated relative to its equilibrium with at...

Near-surface reaction of CO2-bearing fluids with silicate minerals in peridotite and basalt forms solid carbonate minerals. Such processes form abundant veins and travertinedeposits, particularly in associationwith tectonically exposed mantle peridotite. This is important in the global carbon cycle, in weathering, and in understanding physical-chemical interaction during retrograde metamorphism...

Abstract The drive for sustainable concrete production favors the use of high replacement levels supplementary cementitious materials (SCMs) in mix. SCMs such as fly ash and slag, however, although they improve sustainability well most durability properties, increases carbonation rate. Carbonation decreases pH pore solution, making steel reinforcement susceptible to corrosion. effect is, not co...

Performance of OPC and composite cements including limestone ternary blended concretes pastes exposed to natural carbonation, leaching, freeze-thaw (FT) cycles their coupling were investigated. The combined regime is analogous the Capillary suction, internal damage Freeze-thaw (CIF) test. test results showed that cement are more susceptible surface scaling damage. Microanalysis complementary re...

This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting galley proof before it is published in its final citable form. Please note that during the production process errors may be discovered which coul...

This paper summarizes the results of an investigation on carbon dioxide (CO2) sequestration in concrete. Concrete mixtures were not air entrained. Concrete mixtures were made containing Class C fly ash at 0%, 18%, and 35% of total cementitious materials. Effects of three different curing environments on properties of concrete were studied: (1) moist-curing room with 100% relative humidity (RH) ...

This study explored the effects of 5 taste solutions (citric acid, sucrose, sodium chloride, caffeine, and sodium glutamate) versus water on the power frequency content of swallowing submental surface electromyography (sEMG). Healthy subjects were presented with 5 ml of each of 5 tastants and water. Data were collected in 3 trials of the 5 tastants and water by using submental sEMG, which was t...

We study in this paper the conversion of CaO-based CO2 sorbents when subjected to repeated carbonation-calcination cycles with a focus on thermally pretreated/doped sorbents. Analytical equations are derived to describe the evolution of conversion with the cycle number from a unifying model based on the balance between surface area loss due to sintering in the looping-calcination stage and surf...