Durability of normal strength self-compacting concretes and their impact on service life of reinforced concrete structures
Durability of normal strength self-compacting concretes and their impact on service life of reinforced concrete structures
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DOI：
10.1016/j.conbuildmat.2012.12.042
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发表时间：
2013-04
影响因子：
7.4
通讯作者：
K. Sideris;N. Anagnostopoulos
中科院分区：
文献类型：
--
作者：
K. Sideris;N. Anagnostopoulos
据广泛报道，与具有相同水泥含量和相同水灰比的普通振捣混凝土相比，自密实混凝土混合物通常显示出改善的耐久性特性。本研究的主要目的是评估中等强度自密实混凝土的耐久性，并与标准的正常振动混凝土进行比较。使用不同类型的水泥和骨料生产八种不同的自密实混合物。评估的耐久性性能是吸水性、抗碳化性和抗氯化物引起的腐蚀性。这些进行了比较，正常振动的混凝土相同的强度等级的相关性能进行了测量。计算出的系数用于钢筋混凝土结构的使用寿命估算。结果表明，自密实混合料对延长混凝土结构的使用寿命有显著影响，特别是当碳化被认为是主要侵蚀因素时。
It has been widely reported that self-compacting concrete mixtures usually show improved durability characteristics as compared with normally vibrated concretes with the same cement content and the same w/c ratio. The main target of this research is the evaluation of the durability properties of medium strength self-compacting concretes and their comparison with those measured on reference normally vibrated concretes. Eight different self-compacting mixtures were produced using different types of cements and aggregates. The durability properties assessed were the water absorption, the carbonation resistance and the chloride induced corrosion resistance. These were compared with the relevant properties measured on normally vibrated concretes of the same strength class. The coefficients calculated were used to estimate the service life of reinforced concrete structures. The results indicated that self-compacting mixtures have a significant impact on the extension of the service life of concrete structures, especially when carbonation is considered as the main aggressive factor.