Shear Strength of Sensitive Clay Slopes in Maine

Devin, Steven C.; Sandford, Thomas C.

doi:10.1061/40512(289)9

Cited by 2 publications

(2 citation statements)

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“…A geotechnical investigation for a new bridge along state highway route 26/100 at the northern portion of Portland, Maine, USA was performed by the University of Maine for the Maine Depart ment of Transportation (Hardison & Landon 2015). The site is located to the east of Interstate I-95 and underlain by sensitive clays of the Pre sumpscot Formation and in close proximity to prior landslides along the Presumpscot River in the community of Westbrook (Devin & Sandford 2000), as shown by Figure 1.…”

Section: Falmouth Bridge Mainementioning

confidence: 99%

“…For the landslide investigation near Route 26/100, Devin & Sandford (2000) presented triaxial com pression test data on soft sensitive Presumpscot clay. Figure 8 shows CK 0 UC triaxial stress paths for a NC specimen, indicating a value of f' 1 ¼ 30 � at peak strength, while at later stages of shearing, a value of f' 2 ¼ 30 � is obtained at maximum obliquity (M.O.…”

Section: Friction Angle Of Sensitive Presumpscot Claymentioning

confidence: 99%

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Evaluating geoparameters of Maine sensitive clay by CPTU

Mayne¹,

Paniagua²,

Buò³

et al. 2022

Cone Penetration Testing 2022

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Using two sets of analytical solutions for CPTU in clays, a suite of theoretically-consistent geoparameters is shown to be in good agreement with independent laboratory and field test results obtained on sensitive Presumpscot clay in Portland, Maine, USA. Fall cone tests indicate a mean sensitivity of S t ≈ 37. Values of undrained rigidity index (I R ), undrained shear strength (s u ), and yield stress ratio (YSR) are provided by a modified spherical cavity expansion-critical state hybrid model while an effective stress limit plasticity solution is utilized to assess the effective friction angle of the sensitive clay at both peak strength [ϕ' at q max ] and also at maximum obliquity [ϕ' at (σ 1 '/σ 3 ') max ]. A CPTU screening method that uses three simplified equations for YSR helps to identify that the clay is sensitive.

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Section: Falmouth Bridge Mainementioning

confidence: 99%

Section: Friction Angle Of Sensitive Presumpscot Claymentioning

confidence: 99%