| 摘要 |
<p>A glass which is highly resistant to corrosive attack in an alkaline medium, consisting essentially of from about 35 to about 10 percent silicon oxide; from about 24 to about 10 percent oxides of iron; from about 26 to about 70 percent calcium oxide, magnesium oxide, or mixtures thereof; from about 5 to about 18 percent aluminum oxide; and up to about 6 percent sodium oxide all percentages by weight). The glass is preferably prepared by combining slag produced by a municipal solid waste disposal plant with limestone or dolomite, and then forming a solid glass, as in the form of glass fibers. After the coating of the glass fibers with a bonding promoter, the fibers are advantageously employed as strengtheners in an alkali medium such as cement.</p> |
