A Comparative Study of Simulated and Natural Weathering of Some Oklahoma Shales

J. G. Laguros
1974 Clays and clay minerals  
Shales from six locations in Oklahoma were subjected to natural weathering for 2 yr. Simulated weathering of these shales was effected in the laboratory by subjecting them to ultrasonic treatment in a tank type device. Both treatments produced disaggregation. X-ray diffraction patterns for the ultrasonically treated and weathered shales indicated no major changes in the types of clay minerals. However, natural weathering in the field produced degradation of the clay minerals in addition to
more » ... gregation of the shales. Ultrasonic treatment appears to be a good predictive test for determining the durability and weatherability of the shales; however, it can simulate field weathering only so far as the engineering index properties of the shale are concerned. It is not a predictive test where the mineralogical characteristics are of significance.
doi:10.1346/ccmn.1974.0220116 fatcat:xmllvfw7lzayhjyehksw7cpfzq