Study On Overall Performance Of Nuclear Waste Containers Of Hybrid Fiber Reinforced Concrete

With the rapid development of nuclear power industry, the safe disposal of nuclear wastes has become a global bottleneck problem of the sustainable development of nuclear power industry. Currently, no storage technology of nuclear wastes is perfect safety in any country around the world. The suitable choice of packing container reduces the radiation effectively. The packing container made of concrete has been adopted worldwide to transport and reserve the nuclear wastes, because it is easy to produce and transport, able to block radiation, and cheap.Hybrid fiber concrete as a novel material possesses a vast range of application prospect in increasing the workability of concrete. Whether applying the hybrid fiber concrete to make the packing container of the nuclear wastes improves the disadvantages of concrete, and meets the need of300years of endurance life is worth researching. Experiments on properties of hybrid fiber concrete were carried out, through which the paper quantifies the influences of Dura fiber, long basalt fiber and short basalt fiber on some mechanical properties and durability of concrete, and provided the optimal proportion; Made the packing container from hybrid fiber concrete, checked the quality of it, and performed the tests of heat of hydration, simulated the process of casting and using with the ANSYS program, then analyzed the stress condition. Finally, establish the functions of packing container made of hybrid fiber concrete, in which strength and loads as basic variables, calculate reliability indexes, and present a dynamic approach to evaluate them.The findings indicate that packing container made of hybrid fiber concrete can meet the quality properties through scientific manufacture method. In the use of process, the heat from nuclear wastes decay in it is the dominant actor for creating structural stress. Through the dynamic reliability analysis, optimizing material constituent and improving the environment, it is possible to prolong endurance life of packing container to300years.