Topic
Calcium oxide
About: Calcium oxide is a research topic. Over the lifetime, 7600 publications have been published within this topic receiving 66104 citations. The topic is also known as: caustic lime & quicklime.
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TL;DR: In this article, a number of metal oxide (M: Al, Zr, Mg and Y)-stabilized calcium oxide (CaO) CO 2 sorbents directly produced from two-step calcination (argon and air atmospheres) of acidified natural limestone sources were evaluated.
85 citations
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TL;DR: In this paper, the authors used thermogravimetry (TG), X-ray diffraction (XRD), scanning electron microscopy (SEM), N2 adsorption and temperature programmed desorption (TPD) of CO2 for the transesterification of tributyrin with methanol.
85 citations
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TL;DR: In this article, the performance of steel furnace slag (SFS) coarse aggregate in blended slag and low calcium fly ash geopolymer concrete (GPC) was evaluated.
84 citations
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TL;DR: In this article, the optical properties of desert dune sand are investigated to evaluate its performance as a direct solar absorber, and it is shown that the samples appear to be thermally stable between approximately 650°C to 1000°C following an initial mass loss occurring during the first heating cycle.
83 citations
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TL;DR: In this paper, the influence of the amount of lime, porosity, and voids/lime ratio on the initial shear modulus (G0) and unconfined compressive strength (qu) of a lime-treated clay-ey sandy soil was quantified.
Abstract: Lime treatment is an attractive technique for soil improvement in the construction of rail tracks and pavement layers, in slope protection of earth dams, and as a support layer for shallow foundations. However, there are no dosage methodologies based on rational criteria as in the case of soil-cement technology, where the voids/cement ratio is shown to be a key parameter for the estimation of both strength and stiffness. The present study, therefore, was aimed at quantifying the influence of the amount of lime, porosity, and voids/lime ratio on the initial shear modulus (G0) and unconfined compressive strength (qu) of a lime-treated clayey sandy soil. From the results of unconfined compression tests and bender elements measurements, it was shown, for the soil-lime mixtures investigated, that the voids/lime ratio is an appropriate parameter to assess both initial stiffness and unconfined compressive strength. Also, a unique G0/qu versus voids/lime ratio relationship was established linking the soil-lime mi...
83 citations