According to domestic and international history of foam glass, the foam glass development situation of the United States, France, Japan, the former Soviet Union and China was specifically introduced. Moreover ,the foam-glass-production-lines history was divided by generations and the production-lines characteristics each generation was presented in detail. Compared with the production scale ,investments and unit production cost of foam glass production line on different generations ,we could find that building high-generation production lines, increasing productivity, improving quality, reducing costs and enhancing competitiveness will be the development trend of foam glass industry in the future.
In recent decades, high-tech electrical equipment has drastically proliferated instead of Cathode Ray Tube (CRT), making CRT funnel glass potential hazardous solid waste. Due to a relatively high level of lead, CRT funnel glass could be used as a potential material for the production of anti-radioactive concrete. In our study the CRT funnel glass , which was separated as aggregate in the concrete, was reduced to 4.75-25 mm (coarse aggregates) and less 4.75 mm (fine aggregates) in the production of anti-radioactive concrete. Mixes containing 0%, 20%, 40% , 60%, 80% and 100% (volume percentage) of CRT funnel glass to replace fine aggregate and coarse aggregate (respectively or simultaneously)) were prepared. The influence of the size, shape and replacement percentage of aggregates on workability, compressive strength and radiation shielding performance were determined. It was found that the replacement of natural aggregate with recycled CRT glass considerably improved the slump and radiation shielding performance but reduced compressive strength. The optimum percentage of waste funnel glass used as fine aggregate and coarse aggregate was 40%. The results clearly showed that the CRT funnel glass performed a significant enhancement in radiation shielding properties.
Abstract. In the present work, T6 heat treatment (solution treatment and subsequent aging) of the sand-cast Mg–10Gd–3Y–0.5Zr (wt.%) alloy was optimized by measuring both hardness vs aging time process curves and tensile properties of the differently T6 treated alloys at room temperature. Then the high temperature tensile properties of the studied alloys at the optimum T6 heat treatment were investigated systematically. The temperature range of the tensile tests was 25 °C to 300 °C. The results show that the optimum T6 heat treatment for sand-cast Mg–10Gd–3Y–0.5Zr alloy is 525°C×12h+250°C×10h. The T6 treated alloy exhibits significant anomalous strength behaviour from 25 °C to 300 °C, i.e., both tensile yield strength and ultimate tensile strength of the studied alloy first increased with increasing of temperature, and then decreased as the temperature increased further. Comparatively, elongation increased continuously with increasing temperature.
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