Assessment of engineering gas radiation methods in an industrial glass furnace configuration

This work is dedicated to a comparison of various methods of gaseous flames radiation in a tri-dimensional configuration representative of a glass furnace studied at Saint Gobain Research Paris.

Partial replacement of Portland cement with industrial glass waste in mortars

The necessity to reduce the consumption of cement in cementitious composites is a worldwide concern and the partial replacement of cement with industrial waste has gathered considerable interest. One type of industrial waste is glass, which is rich in amorphous silica but can present problems with its use due to the alkali-silica reaction (ASR). The objective of this study was to analyze the compressive strengths of mortars using ground glass residue (GLR). Milling times of 16 h and 32 h were conducted and GLR tested in cement substitutions of 10 w.t.%, 15 w.t.% and 20 w.t.%. A statistical analysis was performed to verify which factors affected mortar strength. The mitigating effect of GLR in ASR was also tested. Results showed that milling time did not affect resistance significantly but w.t.% substitution did. The substitution of 20 w.t.% proved to provide the best result as it was statistically equal to the standard mixture.

Effect of Using Bagasse Ash and Glass Powder on Concrete Compressive Strength

Bagasse ash is a waste from the sugar factory industry which has silica content and grain size is relatively the same as cement. Glass powder is made from industrial glass and household waste, has a silica content and grain size is relatively same as sand. The use of both wastes as concrete substitutes is expected to reduce environmental pollution and exploitation of natural resources. This study aims to determine the effect of bagasse ash as a cement substitution and glass powder as sand substitution in a concrete mixture on the compressive strength. This study uses a mixture of bagasse ash 2.5%, 5%, and 7.5% by weight of cement, and the glass powder is 5%, 10%, and 15% by weight of sand. Compressive strength testing on days 7 and 28. The results of this study are the higher percentage of substitution materials, workability will decrease. Compressive strength testing shows that all variations have resulted under normal concrete. The highest compressive strength is obtained from variation A with a mixture of 2.5% bagasse ash + 5% glass powder that is 24.50 MPa. Variation of the mixture with bagasse ash of 2.5% has a higher compressive strength than other variations on day 28.

Plasmonic Glasses and Films Based on Alternative Inexpensive Materials for Blocking Infrared Radiation

The need for energy-saving materials is pressing. This paper reports on the design of energy-saving glasses and films based on plasmonic composite glasses is nontrivial and requires to take full advantage of both materials and shape-related properties of the nanoparticles. We compute the performance of solar plasmonic glasses incorporating a transparent matrix and specially-shaped nanocrystals. Plasmonic nanoshells are shown to exhibit the best performances as compared to nanorods and nanocups. Simultaneously, the synthesis of plasmonic nanoshells is technologically feasible using gas-phase fabrication methods. The computational work was done for noble metals (Au, Ag) as well as for alternative plasmonic materials (Al, Cu, TiN). Inexpensive materials (Ag, Al, Cu, TiN) show overall good performance in terms of the commonly-used figures of merit of industrial glass windows. Together with numerical data for specific materials, this study includes a set of general rules for designing efficient plasmonic IR-blocking media. The plasmonic glasses proposed herein are good candidates for cheap optical media to be used in energy-saving windows in warm climates' housing or temperature-sensitive infrastructure.