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Mechanical Connectors to Enhance the Interfacial Debonding of Concrete Overlays
Applied Sciences ( IF 2.838 ) Pub Date : 2020-06-03 , DOI: 10.3390/app10113876
Rubén-Daniel López-Carreño , Sergio Carrascón , Antonio Aguado , Pablo Pujadas

Concrete bonded whitetoppings and overlays usually fail due to a loss of bond between the layers as a consequence of direct actions (traffic loads) or indirect actions (temperature differences or shrinkage in the layers). These actions generate stresses in the interface that may exceed the strength capacity of the union between layers. This paper proposed an innovative solution for this problem that consisted of placing mechanical connectors in the overlay interfaces to provide them with post-cracking strength and maintaining the monolithic response of the pavement. Three experimental programs on real-scale pavements with two types of mechanical connectors were studied under heavy traffic in terms of structural performance. Findings reveal that this technique might be an excellent solution to the problem of interfacial debonding.

中文翻译:

用于增强混凝土覆盖层界面脱粘的机械连接器

由于直接作用(交通负荷)或间接作用(层内的温差或收缩)导致层间粘合丧失,混凝土粘合白面和覆盖层通常会失效。这些动作在界面中产生的应力可能超过层间结合的强度能力。本文针对这个问题提出了一种创新的解决方案,包括在覆盖界面中放置机械连接器,为它们提供开裂后强度并保持路面的整体响应。在交通繁忙的情况下,就结构性能而言,对具有两种机械连接器的真实比例路面的三个实验程序进行了研究。研究结果表明,该技术可能是解决界面脱粘问题的绝佳解决方案。
更新日期:2020-06-03
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