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首页> 外文会议>Third international conference on composites in infrastructure (ICCI'02) >INNOVATIVE CEMENT BASED THIN SHEET COMPOSITES FOR RETROFIT
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INNOVATIVE CEMENT BASED THIN SHEET COMPOSITES FOR RETROFIT

机译：基于水泥的创新型薄板复合材料

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摘要

In this paper, a new type of cement-based thin sheet composite will be presented. Thisrninnovative technology can be applied to retrofit deficient concrete structures with arnsuperior performance as compared to current Fiber Reinforced Polymer resin (FRP) thinrnsheets. The greatest potential of FRPs in the near future will be in the areas of repair,rnstrengthening, and rehabilitation of existing structures, such as externally bondedrncomposite fabrics or jackets on beams, columns, and bridge decks. Significantrnimprovements in compressive, shear, and flexural behavior of bonded concrete elementsrnare obtained. In an effective retrofit with external FRP sheets, a layer of dry fiber sheetrn(usually unidirectional tape) is placed on the top of a coat of polymer resin that willrnharden to bond the fiber sheet to the concrete structure. The high ratios of strength andrnstiffness to weight of FRP are primarily responsible for effective retrofit. Thernstrength/stiffness of FRPs is almost entirely attributed to the fibers, since the polymericrnmatrix has negligible strength/stiffness in comparison to the fibers. Instead of usingrnpolymeric resins we develop innovative cement-based matrix materials for making therncomposites. Cement-based materials have many advantages in comparison to polymericrnresins. For instance, much less or no preparation of a concrete surface is required forrngood bonding. Additional benefits include much higher fire and vandalism resistance,rnand user friendly to the construction industry.
机译：在本文中，将提出一种新型的水泥基薄板复合材料。与当前的纤维增强聚合物树脂（FRP）薄板相比，该创新技术可用于改造性能优异的混凝土结构。在不久的将来，FRP的最大潜力将是在现有结构的维修，加强和修复领域，例如外部粘结的复合材料或梁，柱子和桥面板上的外套。粘结混凝土构件的压缩，剪切和挠曲性能得到了显着改善。为了对外部FRP板进行有效的改造，将一层干纤维板（通常是单向胶带）放在聚合物树脂涂层的顶部，该聚合物树脂将变硬以将纤维板粘结到混凝土结构上。 FRP的强度和刚度与重量的高比率主要是有效改造的原因。 FRP的强度/刚度几乎完全归因于纤维，因为与纤维相比，聚合物基体的强度/刚度可忽略不计。代替使用聚合树脂，我们开发了创新的水泥基基质材料来制造复合材料。与聚合树脂相比，水泥基材料具有许多优势。例如，为了良好的粘结，需要很少或不需要准备混凝土表面。其他好处包括更高的防火和防破坏性能，并且对建筑行业用户友好。

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