Earth slide on geomembrane: discussion by Chia-Nan Liu, Robert B. Gilbert, member, ASCE, and Stephen G. Wright, affiliate, ASCE

Article Abstract:

T.H. Wu et al made a mistake in the calculation of the potential impact of seepage on slope stability. The authors used total unit weights instead of submerged unit weights, which are more appropriate in the seepage force approach of measuring slope stability. This resulted in incorrect slopes and their corresponding mobilized strength ratios. It is recommended that future researchers distinguish the use of total unit weights and boundary water pressures versus seepage forces and submerged unit weights.

Slopes (Physical geography), Slopes (Landforms), Seepage, Seepage (Hydrology)

---

Closure by A.S. Al-Homoud, A.A. Basma, Associate Member, ASCE, A.I. Husein Malkawi, Associate Member, ASCE, and M.A. Al Bashabsheh

Article Abstract:

The drying temperature used (105 degrees Celsius) rather than the cyclic swelling may be the controlling factor when cyclic wetting and drying reduces the swelling potential. The suggestion that drying the soil specimens in the summer sun to a moisture content below the shrinkage limit is acceptable. Furthermore, it should be stressed that the remaining amount of water in the specimens after partial drying is enough to hold together fragments of expansive sedimentary rocks.

---

Discussion by Retnamony G. Robinson and Mehter M. Allam

Article Abstract:

A technical paper on the shrink-swell behavior of clays concluded that particle aggregation is caused by cyclic wetting and drying, which reduces the swelling tendency and increases clay permeability. However, it is not always true that swell potential is reduced if the soil is partially dried in each cycle or that swell potential increases if it is allowed to dry fully.

Similar abstracts:

• Abstracts: Computer simulation of 3-D random distribution of short fibers in metal matrix composite materials. Enhancement of thermal conductivities in polymeric fiber reinforced composite materials
• Abstracts: Effects of nonlinear sorption on the diffusion of benzene and dichloromethane from two air-dry soils. Static and dynamic headspace analysis of volatile organic compounds in soils
• Abstracts: Ultrafast reaction dynamics in molecular cluster ions. Germanyl and silyl cations: free at last
• Abstracts: Desorption of humic acids from an iron oxide surface. Dialysis investigations of atrazine-organic matter interactions and the role of a divalent metal
• Abstracts: Complete dissolution of trichloroethylene in saturated porous media. Transformation of hexachloroethane in a sulfidic natural water

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.