The Influence of Clays on Water and Ice in Rock Pores. Part I. Quantitative Cold Differential Thermal Analysis

摘要

Unique quantitative cold differential thermal analysis (electrocalorimetric) equipment has been constructed at Rensselaer Polytechnic Institute for the purpose of studying one phase of the nature of water and ice in rock pores. The temperature of freezing, the heat of freezing and the nature of freezing of water in rock can be systematically analyzed for the first time with this unit. The DTA (differential thermal analysis) equipment is capable of detecting the freezing of 0.001% water in an average 40 gram rock sample or a temperature differential of 0.001C. The construction and calibration of the DTA equipment and corrections for variations of heat of freezing of water with number of degrees of supercooling and for variations of specific heat and conductivity are described in detail. (Author)