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a new technique to study the swelling of clays by interferometrie laser
a new technique to study the swelling of clays by interferometrie laser
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机译：干涉法研究粘土溶胀的新技术
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摘要
this invention is a new experimental technique based on laser linterfu00e9romu00e8tre using michelson linterfu00e9romu00e8tre, we have adapted. in fact, the movable mirror is connected to a lever arm through a cylindrical sample dargile length 10cm, dried and shaped so as to retain the drops of water on its surface to control the water content.when distilled water injection volume (a few drops) on the surface of lu00e9chantillon, it expands and moves the mirror. there is the taper of the fringes and their number is counted during the time t that the swelling (about 20 minutes).we can measure the movement of the mirror, and to determine the value of the free bulging, expressed in% or g / cm3, the speed in the course of time, the pressure of swelling under stress (to compare with ldomu00e8tre), and the speed dinfiltration water depth of clay soil.the detection system consists of a video camera connected to the pc, software to monitor the taper parts dinterfu00e9rence and counting.
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