结合具体工程实例，以老混凝土柱体外壳为依据，用喷射聚合物砂浆作为修补材料，进行了防碳化补强加固。通过对模拟构件的力学性能和断裂韧性测试，检验了其加固效果，证明了此方法能够达到延缓碳化速度，提高整体结构抗力和延性的目的。另外，本文还进行了混凝土柱体结构可靠度的计算，完成了结构抗力鉴定，确定了柱体加固后的安全等级，评估出结构修复后继续使用的寿命。 With concrete engineering examples, based on the shell of the old concrete cylinder, sprayed polymer mortar was used as a repair material to reinforce and prevent carbonization. Through the test of mechanical properties and fracture toughness of the simulated component, the reinforcement effect was tested and it was proved that this method can achieve the purpose of retarding the carbonization rate and improving the overall structure resistance and ductility. In addition, this article also carried out the calculation of the reliability of the concrete column structure, completed the identification of structural resistance, determined the security level after the column reinforcement, and evaluated the life of the structure after the restoration.