The geotechnical engineering group laboratories contain state-of-the-art educational and research equipment.
The instructional geotechnical laboratory is used to conduct laboratory sessions that are part of the coursework for undergraduate classes (Soil Mechanics and Foundation Design). The lab consists of soil characterization facilities including standard soil classification equipment, simple shear apparatus, direct shear apparatus, triaxial cell setup which can be used for conventional triaxial tests (CU, CD, UU) as well as consolidation tests, consolidometers and flexible wall permeameter.
The geotechnical group at the University of New Hampshire is also equipped with a cluster of advanced soil testing equipment suitable for characterization of soils. These facilities are particularly suitable for experimental research involving advanced modeling of the constitutive behavior of soils. This includes a cyclic triaxial cell suitable for cyclic triaxial or resilient modulus evaluation. The laboratory also contains an automated cyclic simple shear device and an advanced torsional ring shear apparatus. An Instron loading machine is available for compression testing as well. In addition, Point Load apparatus is available for rock testing. The lab also contains California Bearing Ratio testing apparatus and falling weight deflectometer useful for pavement testing. A state-of-the-art flow pump system is designed for precisely controlling the flow rates during the suction-controlled testing of unsaturated soils. A full-scale shake table facility in structural lab can also be used for 1-g modeling of geotechnical systems and soil-structure interaction probles.
Static and Cyclic Triaxial
Cyclic Simple Shear
Torsional Cyclic Ring Shear
Geotechnical Centrifuge Laboratory
Geotechnical Centrifuge is a convenient equipment for scaled physical modeling. A 5 g-ton centrifuge at UNH is suitable for seismic soil models, slope stability evaluation, seepage mechanisms and contaminant transport study, soil-structure interaction problems. An inflight hydraulic shake table enables the researcher to study the response of geotechnical systems under earthquake loads. Various types of container are available serving different research projects including several rigid containers and a laminar container. This lab is equipped with advanced measurement sensors including LVDTs, accelerometers, pore water pressure sensors, moisture content probes.
Site Investigation Laboratory
A set of advanced in situ testing equipment are available in this laboratory. This includes Jean Lutz CL88n drilling parameter recorder, with associated sensors, flowmeters and software. In addition, this lab is equipped with a Hogentogler 10-ton digital seismic piezocone penetrometer, dynamic cone, BAT sampler, Marchetti flat dilatometer, instrumented dilatometer, Cambridge self-boring pressuremeter, permeafor, Geonor field vane and Geometrics seismic refraction system. A portable pushing frame is also available for penetration testing using some of these devices.
General computer access is available through the Civil Engineering Student Computer Cluster. The computer cluster consists of 25 networked state-of-the-art PCs for undergraduate and graduate instruction and research. Instructional and advanced engineering software are available for geotechnical-related projects such as Plaxis, Abaqus, LPILE, UT4, and Rocscience among other traditional engineering software.