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Alternative Title:Pressuremeter correlation study : Louisiana highway research.
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Abstract:The determination of in-situ strengths at construction sites has long been a problem that has caused considerable difficulty for Construction Engineers. A variety of tests have been developed over a period of time to attempt to obtain an estimate of these conditions. Among these tests are unconfined compression, triaxial, vane shear, and direct shear tests.
This project was initiated as an investigation of the Menard Pressuremeter System. This system has several inherent advantages over conventional undisturbed sampling and testing methods. These are first; that the test is run in the ground on a portion of the soil in-place and, at least in theory, is therefore less susceptible to disturbance in sampling and testing; second, the equipment is portable and gives access to areas not easily sampled by conventional undisturbed sampling equipment; and third, less time is required to obtain results, since the strengths are calculated from data accumulated at the test site. In addition, less total manhours are expended in sampling and testing. Previous studies have indicated that over all costs are reduced.
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