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本文针对汾河二库工程粉煤灰掺和料的选用，对几种拟选用的粉煤灰进行试验和对比分析，并对神头二电厂粉煤灰进行了混凝土试验，得出以下结论：①神头二电厂粉煤灰为Ⅰ级灰，是山西省质量最优，也是国内高质量粉煤灰，完全适合汾河二库工程使用；②采用神头二电厂粉煤灰，掺量６０％时混凝土各项性能指标均满足设计要求，而高掺粉煤灰对降低水化热，减少温控，抑制骨料碱活性更为有益；③神头二电厂粉煤灰掺量在４０％以内时，混凝土强度降低很少，抗冻性能基本不变，从而适合于拌制高标号混凝土。
In this paper, for the selection of fly ash admixture in Fenhe second reservoir project, several kinds of fly ash to be used are tested and compared with each other, and the fly ash of Shentou No.2 power plant is tested concretely, the following conclusions are drawn: ① Shentou Power Plant fly ash is Grade I ash, is the best quality in Shanxi Province, is also the domestic high-quality fly ash, completely suitable for the Fenhe second reservoir project; ② Shentou Power Plant fly ash, dosage 60 % Of concrete performance indicators meet the design requirements, and high fly ash to reduce heat of hydration, reduce temperature control, inhibition of aggregate activity is more beneficial; ③ Shentou Power Plant fly ash content of 40% Within the concrete strength is reduced little, frost resistance basically unchanged, which is suitable for mixing high-grade concrete.