A new frost salt scaling mechanism for concrete pavements based on brine rejection from ice layer adhered to concrete surface
A new frost salt scaling mechanism for concrete pavements based on brine rejection from ice layer adhered to concrete surface
复制标题
基于附着在混凝土表面的冰层的盐水排斥的新型混凝土路面霜盐结垢机制
DOI：
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
Engin Yener
中科院分区：
文献类型：
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作者：
Engin Yener
在寒冷地区，公路、机场或人行道上都有融冰剂，以融化路面上的冰层。在这种情况下，会发生从混凝土路面上剥落碎石屑的渐进性表面损坏。这种损害被称为霜盐结垢。为了生产出抗氧化混凝土，防止混凝土在现场的破坏，必须了解混凝土的劣化机理。为此目的，在文献中已经假设了许多机制。然而，没有唯一的一个可以用来解释所有的观察，从实验室测试和现场应用。在这项研究中，一个新的假设，是建立在文献中的早期发现。根据所提出的机理，强制盐水施加的压力，从外部强冰层，粘附到表面，导致结垢的强冰粘附区域。已发表的事件是无法解释的一个独特的前机制在文献中提出的有关霜结垢合理化的基础上提出的机制。
In cold regions, highways, airfields or sidewalks are exposed to de-icing agents to thaw the ice layer on pavement surface. In this situation, a progressive surface damage that pulls off flaky chips from concrete pavement takes place. This damage is named as frost salt scaling. To produce scaling-resistant concrete and prevent the damage in the field, the deterioration mechanism should be understood well. For this aim, a number of mechanisms have been hypothesised in literature. However, there is no unique one which can be used to explain all observations from laboratory tests and field applications. In this study, a novel hypothesis that is built on earlier findings in literature is introduced. According to the proposed mechanism, the pressure applied by forced brine from outer strong ice layer, which adhered to surface, causes scaling in the strongly ice adhered regions. The published events that are unexplainable by a unique former mechanisms proposed in literature related to the frost scaling are rationalised based on the proposed mechanism.