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Application of Sustainable Bamboo-Based Composite Reinforcement in Structural-Concrete Beams: Design and Evaluation

机译：可持续竹基复合材料在结构混凝土梁中的应用：设计和评估

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Reinforced concrete is the most widely used building material in history. However, alternative natural and synthetic materials are being investigated for reinforcing concrete structures, given the limited availability of steel in developing countries, the rising costs of steel as the main reinforcement material, the amount of energy required by the production of steel, and the sensitivity of steel to corrosion. This paper reports on a unique use of bamboo as a sustainable alternative to synthetic fibers for production of bamboo fiber-reinforced polymer composite as reinforcement for structural-concrete beams. The aim of this study is to evaluate the feasibility of using this novel bamboo composite reinforcement system for reinforced structural-concrete beams. The bond strength with concrete matrix, as well as durability properties, including the water absorption and alkali resistance of the bamboo composite reinforcement, are also investigated in this study. The results of this study indicate that bamboo composite reinforced concrete beams show comparable ultimate loads with regards to fiber reinforced polymer (FRP) reinforced concrete beams according to the ACI standard. Furthermore, the results demonstrate the potential of the newly developed bamboo composite material for use as a new type of element for non-deflection-critical applications of reinforced structural-concrete members. The design guidelines that are stated in ACI 440.1R-15 for fiber reinforced polymer (FRP) reinforcement bars are also compared with the experimental results that were obtained in this study. The American Concrete Institute (ACI) design guidelines are suitable for non-deflection-critical design and construction of bamboo-composite reinforced-concrete members. This study demonstrates that there is significant potential for practical implementation of the bamboo-composite reinforcement described in this paper. The results of this study can be utilized for construction of low-cost and low-rise housing units where the need for ductility is low and where secondary-element failure provides adequate warning of collapse.
机译：钢筋混凝土是历史上使用最广泛的建筑材料。但是，由于发展中国家钢的供应有限，作为主要增强材料的钢成本不断上涨，钢生产所需的能源量以及敏感性等问题，正在研究替代天然和合成材料来增强混凝土结构。腐蚀。本文报道了竹子作为合成纤维的可持续替代品的独特用途，用于生产竹纤维增强的聚合物复合材料，作为结构混凝土梁的增强材料。这项研究的目的是评估将这种新型竹复合材料增强系统用于结构混凝土梁的可行性。在这项研究中，还研究了与混凝土基体的粘结强度以及耐久性，包括竹复合增强材料的吸水率和耐碱性。这项研究的结果表明，根据ACI标准，竹纤维增强混凝土梁与纤维增强聚合物（FRP）增强混凝土梁具有相当的极限载荷。此外，结果证明了新开发的竹复合材料作为新型构件的潜力，可用于钢筋混凝土构件的非挠曲临界应用。还将ACI 440.1R-15中所述的纤维增强聚合物（FRP）增强筋的设计指南与本研究中获得的实验结果进行了比较。美国混凝土学会（ACI）的设计指南适用于竹复合材料钢筋混凝土构件的非挠曲临界设计和施工。这项研究表明，本文所述的竹复合材料增强材料具有实际应用的巨大潜力。这项研究的结果可用于建设低成本和低层房屋单元，这些房屋对延展性的需求较低，并且二次元失效可提供足够的坍塌预警。

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