矿物添加剂对混凝土耐环境性能的影响

R. Lebedeva, G. Skripkiūnas, A. Kičaitė
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引用次数: 0

摘要

水工混凝土是由粗、细骨料和粘结剂组成的复合材料,在养护过程中由液体向固体转变,在开采过程中易受到破坏性影响。研究对象包括硅酸盐水泥、矿渣硅酸盐水泥、矿渣水泥和石灰石。研究结果表明,矿渣掺量对水工建筑物混凝土的冻融性能有重要影响。受波罗的海冲击的水工混凝土受海水和冻融循环的影响。试验结果可用于水工混凝土耐久性评价。这项工作的目的是评估波罗的海环境对循环冻融后水工混凝土性能变化的影响。
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Influence of Mineral Additives on Environmental Resistance of Concrete
Abstract Hydraulic concrete is a composite material that consists of coarse and fine aggregates and a binder, which transforms from liquid to solid state while curing and is exposed to destructive impacts during exploitation. The research was carried out with various cements – Portland cement, slag Portland cement, slag cement and limestone. The results of research showed that quantity of slag in hardened Portland cement paste influences freezing-thawing of concrete for hydraulic structures. Hydraulic concrete under impact of the Baltic Sea is influenced by sea water and freezing and thawing cycles. Under the mentioned impacts exerted simultaneously, experiment results enable assessment of durability of hydraulic concrete. The objective of the work is to assess the impact of the environment of the Baltic Sea on changes in properties of hydraulic concrete after cyclic freezing and thawing.
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