Experimental contour graph modelling of sandstones at high temperatures

The successful disposition of radioactive nuclear waste has been considered to be a non-negligible task in the strategy for developing advanced nuclear fuel cycles. The physical behavior of sandstone has garnered widespread interest for use in highly radioactive nuclear waste repositories due to its potential impacts on stability at high temperatures. Here, we experimentally demonstrate the physical characteristics of sandstones by combining tensile strength and porosity at 500°C. Our results show that the quartz content has a significant impact on the physical characteristics of sandstones. Further, an experimental contour graph modelling via mass loss ratio and specific gravity of sandstones at 500°C was also observed. In all cases, the physical change of sandstones was less than 5%. We anticipate that sandstones can potentially serve as a natural barrier for secondary nuclear waste repositories which are in need to endure high temperatures.