Crack is found to be a major distress that affects the performance of the epoxy asphalt pavement.An extended finite element method was proposed for investigating the fracture properties of the epoxy asphalt mixture.Fi...Crack is found to be a major distress that affects the performance of the epoxy asphalt pavement.An extended finite element method was proposed for investigating the fracture properties of the epoxy asphalt mixture.Firstly,the single-edge notched beam test was used to analyze the temperature effect and calculate the material parameters.Then,the mechanical responses were studied using numerical analysis.It is concluded that 5℃ can be selected as the critical temperature that affects the fracture properties,and numerical simulations indicate that crack propagation is found to significantly affect the stress state of the epoxy asphalt mixture.The maximum principal stress at the crack surface exhibits different trends at various temperatures.Numerical solution of stress intensity factor can well meet the theoretical solution,especially when the temperature is lower than 5℃.展开更多
Standard is an effective carrier of developing circular economy while standard- ization is the foundation of scientific management of circular economy and the bridge for scientific research, production and application...Standard is an effective carrier of developing circular economy while standard- ization is the foundation of scientific management of circular economy and the bridge for scientific research, production and application. Therefore, it is necessary to explore how to give full play to the important roles of standardization in the development of circular economy, how to make use of standardization to accelerate the promotion and application of advanced technology for circular economy and to develop the circular economy with the help of standardization.展开更多
Empresa Portuguesa das Aguas Livres （EPAL） is a capital intensive company, in which the operational infra-structure assets represent the basis of customer service whilst being a great consumer of capital. In this co...Empresa Portuguesa das Aguas Livres （EPAL） is a capital intensive company, in which the operational infra-structure assets represent the basis of customer service whilst being a great consumer of capital. In this context, the asset management function plays a key role in optimizing the return on infrastructure usage, and at the same time guaranteeing adequate levels of service. With a view to an effective and efficient management of investments to be made in a rational and sustained way under technical-scientific criteria, implementing a systematic inspection program was considered as the best approach strategy. The main purpose of the inspection program is to obtain, in a systematic, coherent and comparable way, relevant information to support decision making, in particular for supporting intervention priorities and identification along with asset maintenance requirements, whether preventive or curative. This methodology is revealed as a key tool in the management of risk of failure associated with the management and operation of EPAL＇s building infrastructure.展开更多
基金Project(50578038)supported by the National Natural Science Foundation of China
文摘Crack is found to be a major distress that affects the performance of the epoxy asphalt pavement.An extended finite element method was proposed for investigating the fracture properties of the epoxy asphalt mixture.Firstly,the single-edge notched beam test was used to analyze the temperature effect and calculate the material parameters.Then,the mechanical responses were studied using numerical analysis.It is concluded that 5℃ can be selected as the critical temperature that affects the fracture properties,and numerical simulations indicate that crack propagation is found to significantly affect the stress state of the epoxy asphalt mixture.The maximum principal stress at the crack surface exhibits different trends at various temperatures.Numerical solution of stress intensity factor can well meet the theoretical solution,especially when the temperature is lower than 5℃.
文摘Standard is an effective carrier of developing circular economy while standard- ization is the foundation of scientific management of circular economy and the bridge for scientific research, production and application. Therefore, it is necessary to explore how to give full play to the important roles of standardization in the development of circular economy, how to make use of standardization to accelerate the promotion and application of advanced technology for circular economy and to develop the circular economy with the help of standardization.
文摘Empresa Portuguesa das Aguas Livres （EPAL） is a capital intensive company, in which the operational infra-structure assets represent the basis of customer service whilst being a great consumer of capital. In this context, the asset management function plays a key role in optimizing the return on infrastructure usage, and at the same time guaranteeing adequate levels of service. With a view to an effective and efficient management of investments to be made in a rational and sustained way under technical-scientific criteria, implementing a systematic inspection program was considered as the best approach strategy. The main purpose of the inspection program is to obtain, in a systematic, coherent and comparable way, relevant information to support decision making, in particular for supporting intervention priorities and identification along with asset maintenance requirements, whether preventive or curative. This methodology is revealed as a key tool in the management of risk of failure associated with the management and operation of EPAL＇s building infrastructure.
