Despite the advantages of lightweight aggregate concrete (LWAC), its brittleness in compression has limited its vast application. Jacketing by fiber-reinforced polymer (FRP) tends to be one method to overcome this negative point. The current study attempted to recognize the FRP confinement impact on the LWAC compressive monotonic behavior. Both fine and coarse aggregates were Scoria aggregate. The variables include the type and number of FRP layers; 150 × 300 mm cylindrical specimens were wrapped with 1, 2, 3, and 4 layers of glass FRP (GFRP) and carbon FRP (CFRP) strips. An investigation was performed on the monotonic stress-strain curve belonging to LWAC confined with FRP, and key points, including ultimate stress and strain on the curve, were explored. The results revealed that the key points would significantly improve by increasing FRP layers. Although the influence of GFRP confinement on enhancing the ultimate strain appears to be more considerable than the CFRP confinement, CFRP jacketing of LWAC upgrades the ultimate strength to the higher level compared to wrapping with GFRP. Based on the interpretation of experimental results, a design-oriented stress-strain model was established to predict the monotonic compressive response of Scoria-LWAC circular specimens confined with CFRP and GFRP. The validity of the model was examined. The predicted output was appropriately in line with the experimental findings.

尽管轻质骨料混凝土（LWAC）具有优势，但其压缩脆性限制了其广泛的应用。纤维增强聚合物（FRP）的护套往往是克服这一缺点的一种方法。当前的研究试图认识到FRP约束对LWAC压缩单调行为的影响。细骨料和粗骨料均为Scoria骨料。变量包括FRP层的类型和数量；用1层，2层，3层和4层玻璃FRP（GFRP）和碳FRP（CFRP）条包裹150×300 mm的圆柱形样品。对属于FW约束的LWAC的单调应力-应变曲线进行了研究，并探索了关键点，包括曲线上的极限应力和应变。结果表明，关键点将通过增加FRP层数而得到显着改善。尽管GFRP约束对增强极限应变的影响似乎比CFRP约束更为显着，但与GFRP包裹相比，LWAC的CFRP护套将极限强度提高到更高的水平。基于对实验结果的解释，建立了面向设计的应力应变模型，以预测受CFRP和GFRP约束的Scoria-LWAC圆形试样的单调压缩响应。检查了模型的有效性。预测的输出与实验结果相符。基于对实验结果的解释，建立了面向设计的应力应变模型，以预测受CFRP和GFRP约束的Scoria-LWAC圆形试样的单调压缩响应。检查了模型的有效性。预测的输出与实验结果相符。基于对实验结果的解释，建立了面向设计的应力应变模型，以预测受CFRP和GFRP约束的Scoria-LWAC圆形试样的单调压缩响应。检查了模型的有效性。预测的输出与实验结果相符。