中文摘要：

为了调查耐久性，特别有很低的送货丹的基于水泥的材料的长期的稳定性，透气试验，碳酸饱和测试，毛状的吸收率测试和膨胀，潜在的测试在长期的热处理状况下面被采用。这些材料的微观结构被扫描电子显微镜学(SEM ) 和水银侵入 porosimeter (MIP ) 以便进一步揭开它在微观结构和它的性质之间的机制和相互关系也分析。结果显示在调查的区域，有送货丹 0.17 的基于水泥的材料象 RPC 一样，拥有低孔和优秀耐久性。而且，它的孔将进一步与正常的热处理相比在长期的热处理下面减少。它的长期的耐久性作为高力量水泥(HSC ) 比有送货丹 0.25 或 0.35 的另外的基于水泥的材料的优异。

英文摘要：

To investigate the durability, especially the long-term stability of cement-based materials with very low w/b, the air permeability test, carbonation test, capillary absorption rate test and dilation potential test were adopted under long-term heat treatment condition. Microstructure of these materials is also analyzed by scanning electronic microscopy （SEM） and mercury intrusion porosimeter （MIP） in order to further unveil its mechanism and interrelation between microstructure and its properties. The results indicate that in the area investigated, cement-based material with w/b 0.17, like RPC, possesses low porosity and excellent durability. Moreover, its porosity will further decrease under long-term heat treatment compared with normal heat treatment. Its long-term durability is much superior to that of other cement-based materials with w/b 0.25 or 0.35 as high strength concrete（HSC）.