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本文叙述以高达 5 0 %重量比粉煤灰替代水泥的高标号砼路面砖研制和生产中攻克难关获得成功过程。并对其经济效益作了分析
This article describes the successful acquisition of high-grade concrete pavement bricks with up to 50% by weight of fly ash instead of cement. And its economic efficiency has been analyzed