为满足海洋环境下高性能混凝土的施工要求,开展了复掺粉煤灰与石灰石粉海工自密实高性能混凝土的试验研究.试验结果表明,在复掺粉煤灰和石灰石粉掺量为40％的条件下,掺入10 ％～30％粉煤灰自密实混凝土具有较高的流动性、填充性、间隙通过性和抗离析性等工作性,满足自密实混凝土的施工要求；28d抗压强度大于50 MPa,56 d的电通量小于1 000 C,90 d扩散系数小于1.5×10-12 m2/s,具有较高的抗压强度和抗氯盐侵蚀性能,满足海洋环境下抗氯盐侵蚀的耐久性要求.%To satisfy marine high performance concrete construction requirements, high performance self-compacting marine concrete with fly ash and limestone powder was experimentally studied. Experimental results show that the fluidity and filling a-bility and passing ability and segregation resistance and etc of serf-compacting concrete containing 10 % ~ 30 % fly ash are good when mineral admixtures content is 40 % and it satisfies marine concrete construction. Moreover, concrete1 compressive strength in 28 days is over 50 Mpa and charge passed in 56 days is under 1 000 C and the 90 days chloride penetration coefficient is under 1.5 x 10"'2 m2/s. Its compressive strength and chloride resistance are high and it can be used in concrete structure of marine circumstance.
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