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Use of tire rubber particles as addition to cement paste
Abstract The surface modification of powdered tire rubber to increase its adhesion to cement paste was studied. The particles were surface-treated with NaOH saturated aqueous solutions for 20 min.Expand
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Cement industry: sustainability, challenges and perspectives
Cement-based materials, such as concrete and mortars, are used in extremely large amounts. For instance, in 2009 concrete production was superior to 10 billion tons. Cement plays an important role inExpand
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Hair color changes and protein damage caused by ultraviolet radiation.
Ultraviolet and visible radiations are known to damage hair. However, quantitative data relating damage to hair type, proteins and color to the radiation wavelength are missing. We studied the effectExpand
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Photo yellowing of human hair.
In general, human hair is claimed to turn yellower after sun exposure. This is particularly affirmed for white hair. However, quantitative data relating yellowness to hair type and to the radiationExpand
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Electron microscopic observations of human hair medulla
In the study of human hair, medulla is the less studied structure because it is believed that it has no influence on the fibre properties. The aim of this paper is to contribute to the betterExpand
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Ethanol fermentation of a diluted molasses medium by Saccharomyces cerevisiae immobilized on chrysotile
In this work, the catalytic role of chrysotile support on the acceleration of alcoholic fermentation under non-aseptic conditions by Saccharomyces cerevisiae was investigated. The fermentation mediumExpand
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Macro-defect free cements Influence of poly(vinyl alcohol), cement type, and silica fume
Macro-defect free cements were prepared using the following variables: processing (calendering and hand-mixing), poly(vinyl) alcohol (with different molecular weight and hydrolysis degree), cementExpand
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Scanning electron microscopy study of raw and chemically modified sisal fibers
Mercerization and acetylation treatments were applied to sisal fibers to enhance adhesion with polymer matrices in composites. The structures of the untreated and treated fibers were assessed withExpand
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About photo-damage of human hair.
This paper reviews the current knowledge about human hair photodamage and the photodegradation mechanisms proposed in the literature. It is shown that there are still a number of questions withoutExpand
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Human hair: color changes caused by daily care damages on ultra-structure
Abstract The relation between hair ultra-structure damages and color changes was studied. Virgin dark-brown hair was hand-washed, using lauryl sodium sulfate solution in 40 °C water, rinsed,Expand
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