Abstract
An earlier investigation showed that marked increases in the tensile strength of glass could be achieved by soaking the specimens in water at 90°C. Increases in strength for the three glasses studied (soda-lime, lead, and borosili-cate) were shown to depend on time of soaking. The present investigation was an extension of this earlier work and dealt with the effect of soaking temperature on strength. A constant soaking period of 24 hours and soaking temperatures of 30° and 60°C. were used. Results were consistent with the view that chemical reaction between water and glass under proper conditions may result in strength increases due to reduction in stress-concentration potentials of flaws.
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