Electrical potential field around the laboratory resistivity equipment

Marluci Cristina Pregnolato, Anna Silvia P. Peixoto, Marcia Tiemi Yamasaki

In the proceedings of: GEO2011: 64th Canadian Geotechnical Conference, 14th Pan-American Conference on Soil Mechanics and Geotechnical Engineering, 5th Pan-American Conference on Teaching and Learning of Geotechnical Engineering

Session: Laboratory Testing

ABSTRACT: The resistivity piezocone is becoming a useful tool in the geo-environmental investigation of contamination plumes. However, the values reported in the literature refer to typical soils from temperature climates, and thus do not reflect the behaviour of tropical soils. Therefore, two different diameters sensors (20 and 30mm) were built in order to study the intervening factors such as moisture, compaction, porosity and degree of saturation. This paper presents a study of the electrical potential field around the resistivity modules to evaluate the boundary contour of the calibration system and the compaction cylinder were the soils tests were carry out. In addition, a pure sand and a tropical clayey sand were compacted in electrical insulator cylinder and the bulk resistivity were obtained in order to analyses the influence electric potencial field and the boundary contour.

RESUMEN: El resistividad piezocono se est⁄ convirtiendo en una herramienta œtil en la investigaciŠn geo-ambiental de las plumas de contaminaciŠn. Sin embargo, los valores reportados en la literatura no reflejan el comportamiento de los suelos tropicales. Por lo tanto, dos sensores de diferentes di⁄metros (20 y 30 mm) se construyeron en el laboratorio para estudio los factores que intervienen, tales como la humedad, la compactaciŠn, la porosidad y el grado de saturaciŠn. Este trabajo presenta un estudio del campo de potencial el”ctrico en torno a los mŠdulos de resistencia para evaluar el contorno de los l™mites del sistema de calibraciŠn y el cilindro de compactaciŠn de los suelos fueron las pruebas se llevan a cabo. Adem⁄s, una arena pura y tropical arena arcillosa fueron compactadas en el cilindro aislante el”ctrico y la resistividad se han obtenido con el fin de los an⁄lisis de la influencia potencial del campo el”ctrico y el contorno de los l™mites de la compactaciŠn de cilindros.

Please include this code when submitting a data update: GEO2011_132

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