Caracterización Geotécnica del deposito de arcillas en planicie de inundación de Samborondón mediante la integración de ensayos de campo y laboratorio

Abstract

Clays permanently located below the groundwater table, whose natural water content exceeds the liquid limit, represent a challenge for the proper foundation of engineering projects of any kind. When this saturated condition is combined with sensitive behavior, the situation becomes an interesting case study.Given the large extent of the floodplain where these clays are found, it is proposed to characterize part of the deposit by implementing common field methods such as mechanical drilling with the Standard Penetration Test (SPT), MASW geophysical surveys, and the determination of index properties through routine laboratory tests. Special emphasis is placed on the determination of the liquid limit using the fall cone apparatus in accordance with BS 1377: Part 2: 1990 (British Standards Institution, 1990).This standard also allows for the indirect measurement of undrained shear strength in both undisturbed and remolded clay samples. Finally, a degree of sensitivity of at least 23% was identified, along with variations between the liquid limit values obtained using the Casagrande device and the fall cone apparatus. Keywords: Clay, sensitivity, liquid limit, fall cone.