Long Term Monitoring and in Situ Testing of Landfill Covers

小行星9617468 根据探索性研究小额赠款，将继续对两个现有垃圾填埋场进行长期监测，这是获得有关垃圾填埋场性能的长期信息的独特机会。 实验室和现场工作将包括研究霜冻渗透，冻融效应，水力传导率的变化，以及覆盖材料的沉降，特别是不渗透的屏障层。 到目前为止，人们对填埋场下屏障系统的性能和可施工性给予了很大的关注，但迄今为止，几乎没有安装盖子，因此没有对其性能进行评估。 这一点至关重要，因为尽管填埋场衬里系统在设计上众所周知是多余的，但填埋场覆盖物并不像目前设想的那样多余。 特别是，这项研究解决了提高性能和降低成本的封面可以通过使用非常规材料，如废纸污泥的可能性。 ***

9617468 Zimmie Long term monitoring of two existing landfills will continue under this Small Grant for Exploratory Research, representing a unique opportunity to obtain long term information about landfill performance. Laboratory and field work will include study of frost penetration, freeze- thaw effects, hydraulic conductivity changes, and settlement in the cover materials, especially the impermeable barrier layers. Much attention has been given to date on the performance and constructability of barrier systems beneath landfills, but to date few covers have been installed so that their performance has not been evaluated. This is critically important because, while the landfill lining systems are notoriously redundant in design, landfill covers are not redundant as presently envisaged. In particular, this research addresses the possibility that improved performance and reduced costs for covers can be achieved by the use of unconventional materials, e.g. waste paper sludges. ***