2020 Ralph B. Peck Lecture: Anand Puppala: Problematic Soils

Professor Anand Puppala delivered the 2020 Ralph B. Peck Lecture at Geo-Congress 2020 in Minneapolis, MN, on February 28, 2020. His lecture was titled "Problematic Soils: Characterization Challenges, Innovative Solutions and Novel Monitoring Methods."
The Peck Award was established in 1999 by the Geo-Institute of the Society in honor of Ralph B. Peck, Dist.M.ASCE. Funds to support this award were donated by the Geoprofessional Business Association (GBA, formerly ASFE).
The award is presented for outstanding contributions to the geotechnical engineering profession through the publication of a thoughtful, carefully researched case history or histories, or the publication of recommended practices or design methodologies based on the evaluation of case histories.
To learn more about the Peck Award and Lecture, visit www.asce.org/career-growth/aw....
For more information on Geo-Congress visit www.geocongress.org.
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[@SureshKumar-nx8ou]

One of the best presentations I have ever witnessed. The transition between various research topics is so smooth and well presented. Thanks for an awesome presentation Dr. Puppala

[@duck-fil-a3606]

Stair-stepping the lime treated soil back into the embankment (as shown at 51:15) is very important, as is over-excavation back into the virgin, un-failed soil when repairing. As Dr. Puppala mentioned, you have to remove the original failure plane during repair; otherwise you're just laying your repair on top of an existing, weakened failure plane, and you are guaranteeing that it will slide again. Additionally, you may want to over-excavate some laterally (left and right when looking directly at the slide area) with your repair because the lime-treated soil is now essentially like concrete (when compared to the adjacent virgin soil), and water will tend to sheet flow across the treated material (rather than soaking into it), causing water to effectively drain into the virgin soil at the contact between the repaired soil and the virgin soil essentially causing sliding and raveling to occur at that treated/untreated contact.

[@profraihan]

Excellent presentation Anand. Congratulations!

[@spschannel28]

Very nice and helpful for research scholar.