By Yunmin Chen, Xiaowu Tang, Liangtong Zhan
"Advances in Environmental Geotechnics" provides the newest advancements during this interdisciplinary box. the subjects lined comprise easy and complicated theories for modeling of geoenvironmental phenomena, trying out and tracking for geoenvironmental engineering, municipal strong wastes and landfill engineering, sludge and dredged soils, geotechnical reuse of commercial wastes, infected land and remediation know-how, purposes of geosynthetics in geoenvironmental engineering, geoenvironmental danger overview, administration and sustainability, ecological concepts and case histories. This complaints contains papers authored through center contributors of ISSMGE TC5 (International Society of Soil Mechanics and Geotechnical Engineering---Environmental Geotechnics) and geoenvironmental researchers from greater than 20 international locations and areas. it's a priceless reference for geoenvironmental and geotechnical engineers in addition to civil engineers. Yunmin Chen, Xiaowu Tang, and Liangtong Zhan are Professors on the division of Civil Engineering of Zhejiang collage, China.
Read Online or Download Advances in Environmental Geotechnics: Proceedings of the International Symposium on Geoenvironmental Engineering in Hangzhou, China, September 8-10, 2009 PDF
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Additional info for Advances in Environmental Geotechnics: Proceedings of the International Symposium on Geoenvironmental Engineering in Hangzhou, China, September 8-10, 2009
It was recognised that the service life of the GM could be extended by reducing the liner temperature. Rowe (2009) has provided a more extensive summary of the research noted above and reached the following conclusions regarding the long-term performance of HDPE geomembrane liners: • The service life of one geomembrane will likely not be the same as that for another geomembrane under the same exposure conditions unless the geomembranes have both the same resin and antioxidant package. Since the antioxidant packages and resins used by geomembrane manufactures change from time to time, the geomembrane service lives can be expected to change from manufacturer to manufacture and even from time to time with the same manufacturer.
In landfill applications, for example, a bottom liner system may be subjected to normal stresses variable between 100 and 800 kPa, considering a waste height of 8-60 m respectively. Table 4 shows the average values of the peak friction angle for different geosynthetics interface and different tests in static and dynamic conditions Analysing some typical geosynthetic/geosynthetic interfaces it is possible to point out the following observations (Carrubba and Massimino, 1998). 1) The initial values of friction angles in static and dynamic condition are very similar; even if due to the viscous nature of geosynthetics and the soil interface dynamic shear strength is influenced by the strain rate.
In the first case the increasing in peck dynamic friction can be due to a possible increased roughness of geomembrane caused by the geonet. In the second case the increasing in peck dynamic friction could be due to the occurrence of abrasion along the shaking direction (De and Zimmie, 1998). Finally, for the goetextile/geonet interfaces, the peak dynamic friction angle appears independent from the number of excitation cycles.