本文以南澳大桥主桥工程为对象,对C60高性能混凝土组成原材料进行优选,然后通过调整水胶比、砂率以及外加剂掺量进行配合比优化设计,通过测试C60高性能混凝土拌和物的工作性能、力学性能、耐久性能,从中选择各项性能较好的配合比作为设计配合比。高性能混凝土具有易浇注而不离析、能长期保持力学性能、早期强度高、在恶劣条件下使用寿命长等优点,逐渐应用于重大工程项目。 In this paper, the main bridge project of Nan’ao Bridge as the object, the C60 high performance concrete is selected as the raw material, and then through the adjustment of water-cement ratio, sand rate and admixture dosage optimization design, through the test of C60 high performance concrete mix Performance, mechanical properties, durability, choose from the better performance of the mix as a design mix. High-performance concrete with easy pouring without segregation, long-term mechanical properties, early strength, long life in harsh conditions, and other advantages, and gradually applied to major projects.