New Techniques in the Study of Setting and Hardening of Hydraulic Materials
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This paper attempts to establish basic ideas for research on the setting and hardening of hydraulic materials through use of methods based on the varia-tion of the electrical resistance of a paste during its setting period. This method is superior to classical ones, due to its wider application and provision for more detailed data on the phenomenon. Moreover, it can be applied automatically. Theoretical considerations as well as experimental evidence show that the beginning and end of the setting period are indicated on resistance-time graphs by well defined, points closely linked to points of graphs showing tem-perature changes during setting.