The use of rubberized concrete (RuC) is an effective environmental approach to reduce the amount of scrap tires around the world. However, there are serious concerns regarding the compressive strength of RuC. This article investigates the use of externally bonded carbon fiber reinforced polymer (CFRP) jackets on RuC to develop a novel high strength and deformable CFRP confined RuC. In this study, 66 RuC cylinders were cast with 0, 10, 20, 30, 40 and 50% fine or coarse rubber to replace mineral aggregates. The RuC cylinders were then confined with one, two or three layers of CFRP jackets. The results indicated 208% high lateral strains in unconfined RuC as compared to the conventional concrete. CFRP jacketing was highly effective for enhancing the compressive strength and deformation capacity of RuC, where high compressive strength enhancement of 52 MPa and deformation capacity (317% axial strain) was achieved. The confined compressive strength test results were compared with the strength models to assess their validity for CFRP confined RuC. An analysis-oriented strength model was developed to predict the axial compressive strength of RuC confined by CFRP jackets. Overall, this study demonstrated the potential of using CFRP-confined RuC as a new structural material with improved strength and deformation.

中文翻译：

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无限制和CFRP承压橡胶混凝土的性能

橡胶混凝土（RuC）的使用是减少全世界废轮胎数量的有效环境方法。然而，对于RuC的抗压强度存在严重的担忧。本文研究了在RuC上使用外部粘结的碳纤维增强聚合物（CFRP）护套来开发新型高强度和可变形CFRP约束的RuC。在这项研究中，使用0％，10％，20％，30％，40％和50％的细橡胶或粗橡胶铸造66个RuC钢瓶，以代替矿物骨料。然后将RuC钢瓶限制为一层，两层或三层CFRP护套。结果表明，与传统混凝土相比，无限制RuC中有208％的高侧向应变。CFRP护套对于提高RuC的抗压强度和变形能力非常有效，达到52 MPa的高抗压强度增强和变形能力（轴向应变317％）。将承压强度测试结果与强度模型进行比较，以评估其对CFRP承压RuC的有效性。建立了面向分析的强度模型，以预测CFRP护套限制的RuC的轴向抗压强度。总的来说，这项研究表明了使用CFRP约束的RuC作为具有改善的强度和变形的新型结构材料的潜力。