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首页> 外文会议>CANMET/ACI international conference on fly ash, silica fume, slag, and natural pozzolans in concrete >Resistance of Fly Ash and Natural Pozzolans Blended Cement Mortars and Concrete to Carbonation, Sulfate Attack and Chloride Ion Penetration
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Resistance of Fly Ash and Natural Pozzolans Blended Cement Mortars and Concrete to Carbonation, Sulfate Attack and Chloride Ion Penetration

机译：粉煤灰和天然火山灰混合水泥砂浆和混凝土对碳化，硫酸盐侵蚀和氯离子渗透的抵抗力

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摘要

The durability of five mortar and concrete mixtures was investigated in this study. A normal portland cement and four blended cements incorporating different pozzolanic materials, two natural pozzolanas and two lignite fly ashes, were used. The properties measured were compressive strength development, sulfate and chloride resistance as well as the carbonation depth. The results available until the age of 1.5 years show that the replacement of normal portland cement by a pozzolanic material usually has beneficial effects on cement's durability, especially when the sulfate resistance of mixtures is of primary interest. The carbonation depth of the pozzolanic mixtures was greater than the control's at all ages up to 1.5 years. Among the four pozzolanic materials examined, the treated lignite fly ash from Ptolemaida gave the best performance in all the tests.
机译：在这项研究中研究了五种砂浆和混凝土混合物的耐久性。使用普通硅酸盐水泥和四种掺入了不同火山灰材料的掺合水泥，两种天然火山灰和两种褐煤粉煤灰。测得的性能为抗压强度的发展，抗硫酸盐和氯化物以及碳化深度。直到1.5岁时为止的可用结果表明，用火山灰质材料代替普通硅酸盐水泥通常会对水泥的耐久性产生有利影响，尤其是当混合物的耐硫酸盐性成为主要关注时。火山灰混合物的碳化深度在不超过1.5岁的所有年龄段均大于对照。在所检查的四种火山灰材料中，托勒密达州处理过的褐煤粉煤灰在所有测试中均表现出最佳性能。

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