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Mechanical strength of soda-lime glass sandblasted by gravitation

Friction 2015年第1期3卷 65-71页

作者： Fouad ROUMILI Saci BENBAHOUCHE Jean-Christophe SANGLEBOEUF Laboratoire de Mécanique de Précision Appliquée Institut d’Optique et Mécanique de PrécisionUniversitéFerhat AbbasSétif19000Algérie Institut de Physique de Rennes UMR CNRS 6251 Bât.10BCampus de Beaulieu35042 Rennes cedexFrance

Damage to a glass surface by sandblasting has a remarkable effect on its mechanical properties and *** this study,we analyze the superficial deterioration of soda-lime glass and its influence on the mechanical *** by gravitation from a fixed height causes damages by the free fall of different quantities of sand,which we performed for a selected grain size and at different angles of *** characterize the surface state,we used different roughness measures(the arithmetic mean value of the roughness Ra,the root mean square roughness Rq,and the maximum roughness Rmax)and measured the optical transmission(transmittance)at different points on the specimen surface using a *** determine the mechanical strength,we proceeded by two methods:first,by a shock ball(falling ball),and then by biaxial bending using circular *** effects of the surface damage on the optical transmission and the mechanical strength of the glass are graphically presented and discussed in this paper.

关键词： sandblasting mechanical strength roughness soda lime glass

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Production of High-Purity Silica Sand from Ivorian Sedimentary Basin by Attrition without Acid Leaching Process for Windows glass Making

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Journal of Minerals and Materials Characterization and Engineering 2021年第4期9卷 345-361页

作者： Péyokoh Roger Thio Kouassi Bruno Koffi Kouadio Denis Konan Kouakou Alphonse Yao Mechanics and Materials Science Laboratory Yamoussoukro C&#244 te d’Ivoire National Polytechnic Institute Félix Houphouë t-Boigny (INPHB) Yamoussoukro C&#244 te d’Ivoire Civil Engineering Geoscience and Geographic Sciences Laboratory Yamoussoukro C&#244 te d’Ivoire

To produce high-purity silica sand usable for glass making, the present study was carried out. The objective of this work was to increase the silicon dioxide (SiO2) content to at least 99% using a simple process without chemical input. The raw sand samples were taken from the Ivorian sedimentary basin, from Maféré and Assinie areas, Côte d’Ivoire. Wet sieving and attrition technique were used for the purification process. The results from the energy dispersive spectrometer (EDS) analyses of the raw and treated samples show a significant increase of silica content and a significant reduction of impurities. The silica content (SiO2) of the sand of Maféré increases from 98.73% ± 0.15% to 99.92% ± 0.05%. And the sand of Assinie increased from 98.82% ± 0.67% in the raw samples to 99.44% ± 0.27% after treatment. The rate of iron oxide and alumina is reduced in these sands. Moreover, the sand of Maféré contains 53.2% of grains of size lower than 500 microns and that of Assinie contains 29.30%. Regarding the chemical composition of these purified sands, they meet the standard BS2975s, the American Ceramic Society and the National Bureau of Standards for window glass making.

关键词： Silica Sand Silicon Oxide Attrition Wet Sieving soda lime glass Maféré Assinie Côte d’Ivoire

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