摘要 :
A Gordon Research Conference on Glass was held at Tilton School 1-5 August 1988. There were 80 attendees. A broad range of topics were covered related to the structure of glass and its effect on properties. A long-standing controv...
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A Gordon Research Conference on Glass was held at Tilton School 1-5 August 1988. There were 80 attendees. A broad range of topics were covered related to the structure of glass and its effect on properties. A long-standing controversy between the advocates of mode-coupling viscosity and activation viscosity models was resolved. There were 20 speakers who were recognized leaders in their technology areas. There were 15 poster papers on diverse topics. Keywords: Reports, Periodicals, Military publications, Scientific literature. (EG)
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摘要 :
The report examines in detail the structural mechanics behavior of thin, layered glass units under lateral pressure relative to the behavior of monolithic glass plates of equal glass thickness. The theoretical study of specific ge...
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The report examines in detail the structural mechanics behavior of thin, layered glass units under lateral pressure relative to the behavior of monolithic glass plates of equal glass thickness. The theoretical study of specific geometries of layered glass units and monolithic glass plates provides interesting insights into the relative behaviors of these plates under lateral pressures. The study shows that layered glass units do not always develop larger principal tensile stresses than those found in monolithic glass plates of the same geometry and nominal thickness.
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摘要 :
Laminated glass units have gained popularity as an architectural glazing product. Their safety and versatility are being used to satisfy many design situations. This usage has established a need for increased understanding of the ...
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Laminated glass units have gained popularity as an architectural glazing product. Their safety and versatility are being used to satisfy many design situations. This usage has established a need for increased understanding of the behavior of laminated glass units subjected to common loadings. The report advances the understanding of laminated glass unit behavior under uniform lateral pressure. The report addresses failure strengths of laminated glass units under different physical and environmental conditions and compares these strengths with the failure strengths of comparably sized monolithic glass plates.
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Structural-mechanics behavior of insulating glass units is addressed by considering the interactive behavior of thin glass plates coupled by a sealed airspace. Of central interest to designers of IG units is a set of 25 graphs whi...
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Structural-mechanics behavior of insulating glass units is addressed by considering the interactive behavior of thin glass plates coupled by a sealed airspace. Of central interest to designers of IG units is a set of 25 graphs which provide the percent of an applied pressure that is carried by the loaded glass plate.
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摘要 :
Experiments were conducted to convert spent oil shale, waste slate, and copper slag into glass and glass-ceramic products. Spent oil shale was easily melted at 1,300C and converted into glass wool for insulation application. Glass...
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Experiments were conducted to convert spent oil shale, waste slate, and copper slag into glass and glass-ceramic products. Spent oil shale was easily melted at 1,300C and converted into glass wool for insulation application. Glass-ceramics were prepared by the use of domestic chrome ore as a nucleating agent. Waste slate from Vermont was readily melted when mixed with limestone. The resultant glass fibers were highly resistant to alkali attack. Iron metal was recovered from copper slags by the use of coal powder as a reducing agent in the molten slag. The lowering of the iron content resulted ina melt that was glass-forming. Combinations of spent oil shale and copper slag also yielded useful glass and glass ceramic compositions.
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摘要 :
Recent glass formulation and melter testing data have suggested that significant increases in waste loading in HLW and LAW glasses are possible over current system planning estimates. The data (although limited in some cases) were...
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Recent glass formulation and melter testing data have suggested that significant increases in waste loading in HLW and LAW glasses are possible over current system planning estimates. The data (although limited in some cases) were evaluated to determine a set of constraints and models that could be used to estimate the maximum loading of specific waste compositions in glass. It is recommended that these models and constraints be used to estimate the likely HLW and LAW glass volumes that would result if the current glass formulation studies are successfully completed. It is recognized that some of the models are preliminary in nature and will change in the coming years. Plus the models do not currently address the prediction uncertainties that would be needed before they could be used in plant operations. The models and constraints are only meant to give an indication of rough glass volumes and are not intended to be used in plant operation or waste form qualification activities. A current research program is in place to develop the data, models, and uncertainty descriptions for that purpose. A fundamental tenet underlying the research reported in this document is to try to be less conservative than previous studies when developing constraints for estimating the glass to be produced by implementing current advanced glass formulation efforts. The less conservative approach documented herein should allow for the estimate of glass masses that may be realized if the current efforts in advanced glass formulations are completed over the coming years and are as successful as early indications suggest they may be. Because of this approach there is an unquantifiable uncertainty in the ultimate glass volume projections due to model prediction uncertainties that has to be considered along with other system uncertainties such as waste compositions and amounts to be immobilized, split factors between LAW and HLW, etc.
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摘要 :
The purpose of this project is to develop the batch reaction data for a soda-lime-silicate glass needed to improve the batch part of the glass-furnace model being developed for the glass industry. Evolved gas analysis combined wit...
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The purpose of this project is to develop the batch reaction data for a soda-lime-silicate glass needed to improve the batch part of the glass-furnace model being developed for the glass industry. Evolved gas analysis combined with batch expansion measurement and thermal analysis was successfully applied to obtain batch reaction data. The heat-capacity measurement by differential scanning calorimetry (DSC) was suggested as a promising method to derive the heat-of-fusion data inexpensively for many different technical glass batches. More tests on a variety of glass batches and parametric studies of the suggested methods are needed for validation. The experimental methods for batch reaction studies and the methodology for obtaining inexpensive heat-of-fusion data developed in this study can also be applied to various types of other technical glasses.
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This tri-fold brochure describe the partnering activities of the Office of Industrial Technologies' (OIT) Industries of the Future (IOF) for Glass. Information on what works for the Glass industry, examples of successful partnersh...
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This tri-fold brochure describe the partnering activities of the Office of Industrial Technologies' (OIT) Industries of the Future (IOF) for Glass. Information on what works for the Glass industry, examples of successful partnerships, and benefits of partnering with OIT are included.
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The report addresses the strength of new window glass plates under the action of uniform lateral pressure. Nine samples of new window glass plates of different geometries were tested to failure. The strengths of the samples are re...
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The report addresses the strength of new window glass plates under the action of uniform lateral pressure. Nine samples of new window glass plates of different geometries were tested to failure. The strengths of the samples are reported. Further, these strengths were evaluated relative to each other by using a common window plate geometry and a theory of fracture which employs parameters m and k which describe surface strength. Direct comparisons of experimental failure data illustrate the dependency of new window glass plate strengths on load duration.
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摘要 :
TWRS wastes contain certain chemical components which, either because of their211 limited solubility or volatilization at high temperatures, present problems for 211 conventional vitrification technologies. The current task comple...
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TWRS wastes contain certain chemical components which, either because of their211 limited solubility or volatilization at high temperatures, present problems for 211 conventional vitrification technologies. The current task completed by BNL 211 concerns the use of low temperature glasses for tank waste remediation. A 211 literature review of existing technologies highlighted lead-iron-phosphate 211 glasses, with melt temperatures of around 900oC, as a significant improvement 211 over existing borosilicate formulations. However, concerns over leachability of 211 the high lead levels in the glass matrix has kindled interest in the development 211 of lead-free phosphate glasses. As part of this current task, crucible studies 211 were performed to scope the potential of advanced phosphate glasses. Based on 211 pioneer work on iron-aluminum-phosphate and tin-phosphate glasses, new 211 formulations were investigated, modified with cations to enhance chemical 211 durability and reduce melt temperatures. Dissolution of matrix metals using a 211 standard leach test, the Product Characterization Test (PCT), was the basis used 211 to evaluate the new glasses. Cursory results indicate that low-temperature 211 glasses can indeed be prepared with melt temperatures between 450 and 900oC. 211 Durability of these glasses and composites compares favorably with lead-iron-211 phosphate glasses, and is an improvement over reference borosilicate 211 formulations. The capacity to incorporate high percentages of sodium was 211 demonstrated, however much waste-specific work will be required to further 211 qualify and quantify treatability of tank waste components.
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