采用聚氨酯改性环氧树脂制备水工建筑物过流面耐老化抗冲击涂层材料,通过固化剂的筛选,骨料级配试验对耐老化抗冲击涂层的力学性能进行调节,涂层抗拉强度可达到20.52 MPa、断裂伸长率达到33.84%,抗冲击强度达到35.56 k J/m^(2),经过模...采用聚氨酯改性环氧树脂制备水工建筑物过流面耐老化抗冲击涂层材料,通过固化剂的筛选,骨料级配试验对耐老化抗冲击涂层的力学性能进行调节,涂层抗拉强度可达到20.52 MPa、断裂伸长率达到33.84%,抗冲击强度达到35.56 k J/m^(2),经过模拟耐老化试验,涂层材料耐老化性能良好,较常规的环氧涂层材料的力学性能有了明显的提高。研究开发的水工建筑物过流面耐老化抗冲击涂层材料可用于施工建筑物过流面的裂缝处理、缺陷修复以及抗冲击抗冲磨保护,具有广阔的应用前景。展开更多
The damages of building structures subjected to multifarious explosions cause huge losses of lives and property. It is the reason why the blast resistance and explosion protection of building structures become an impo...The damages of building structures subjected to multifarious explosions cause huge losses of lives and property. It is the reason why the blast resistance and explosion protection of building structures become an important research topic in the civil engineering field all over the world. This paper provides an overview of the research work in China on blast loads effect on building structures. It includes modeling blast shock wave propagation and their effects, the dynamic responses of various building structures under blast loads and the measures to strengthen the building structures against blast loads. The paper also discusses the achievements and further work that needs be done for a better understanding of the blast loads' effects on building structures, and for deriving effective and economic techniques to design new or to strengthen existing structures.展开更多
文摘采用聚氨酯改性环氧树脂制备水工建筑物过流面耐老化抗冲击涂层材料,通过固化剂的筛选,骨料级配试验对耐老化抗冲击涂层的力学性能进行调节,涂层抗拉强度可达到20.52 MPa、断裂伸长率达到33.84%,抗冲击强度达到35.56 k J/m^(2),经过模拟耐老化试验,涂层材料耐老化性能良好,较常规的环氧涂层材料的力学性能有了明显的提高。研究开发的水工建筑物过流面耐老化抗冲击涂层材料可用于施工建筑物过流面的裂缝处理、缺陷修复以及抗冲击抗冲磨保护,具有广阔的应用前景。
基金Supported by National Science Fund for Distinguished Young Scholars of China (No. 50425824)
文摘The damages of building structures subjected to multifarious explosions cause huge losses of lives and property. It is the reason why the blast resistance and explosion protection of building structures become an important research topic in the civil engineering field all over the world. This paper provides an overview of the research work in China on blast loads effect on building structures. It includes modeling blast shock wave propagation and their effects, the dynamic responses of various building structures under blast loads and the measures to strengthen the building structures against blast loads. The paper also discusses the achievements and further work that needs be done for a better understanding of the blast loads' effects on building structures, and for deriving effective and economic techniques to design new or to strengthen existing structures.
