宝鸡峡水库 3个冲砂底孔曾采用 C5 0铁钢砂混凝土面层防冲抗磨 ,但其性能局限。经试验在泄洪中孔改用 C5 0硅粉混凝土 ,达到了方便施工、降低造价、减少龟裂、保证质量之目的。实践证明 ,硅粉与粉煤灰、高效减水剂共掺 ,是提高混凝土抗冲磨强度的有效途径 Baoji Gorge Reservoir 3 red sand bottom hole has been used C5 0 iron steel sand concrete surface anti-impact wear, but its performance limitations. After the test in the flood hole converted to C5 0 silica fume concrete, to facilitate the construction, reduce costs, reduce cracking, to ensure the quality of the purpose. Practice has proved that silica fume and fly ash, superplasticizer co-doped, is to improve the concrete anti-abrasion strength of the effective way