南水北调中线一期工程总干渠Ⅳ渠服役环境较为恶劣,混凝土冻融破坏问题突出.立足工程区域的地材特点,开展了原材料性能指标测试、混凝土试配以及抗冻性能检测等试验研究工作,配制出工作性能优异、耐久性能好的C 50F 200混凝土,并提出了相应的施工质量控制措施.%The service environment of main channel of midline first phase of North Water Transfer Project is serious, Freeze-thaw damage problem of concrete is prominent. Based on the material characters of local work site area, the performance index test of raw materials, concrete mix test and concrete antifreeze test are carried out. Through these test works, C 50 F 200 concrete with excellent work performance is obtained, and the corresponding measures of construction quality control are suggested.
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