Simplified prediction of changes in shear strength in geotechnical use of drinking water sludge

Y. Watanabe, Hideo Komine

Research output: Contribution to conferencePaper

1 Citation (Scopus)

Abstract

Drinking water sludge is the aggregation of clay and organic compounds which is formed in flocculation and sedimentation process. This study focused on the decomposition of the bonding by flocculating agent and organic matter, and proposed a simplified method for the prediction of changes in shear strength caused by DWS decompositions. The changes in shear strength of DWS were investigated by triaxial compression tests. The specimens were produced using the DWS which was mainly decomposed by H2O2 solutions. As a result, volumetric strain became large in the large axial strain range, and the maximum deviator stress decreased concomitantly with the decrease in ignition loss. After the organic matter was decomposed until 1.38%, the internal friction angle decreased from approximately 38.8° to 37.6°. The changes of shear strength were related to the substantial period in geotechnical works such as road infrastructures. The decompositions of the mechanical bridging and organic matter were described based on diffusion-controlled Al leaching and aerobic biodegradation, respectively.

Original languageEnglish
Pages3271-3274
Number of pages4
Publication statusPublished - 2013 Jan 1
Externally publishedYes
Event18th International Conference on Soil Mechanics and Geotechnical Engineering, ICSMGE 2013 - Paris, France
Duration: 2013 Sep 22013 Sep 6

Other

Other18th International Conference on Soil Mechanics and Geotechnical Engineering, ICSMGE 2013
CountryFrance
CityParis
Period13/9/213/9/6

Fingerprint

Potable water
Shear strength
Biological materials
shear strength
sludge
drinking water
decomposition
Decomposition
organic matter
prediction
Internal friction
Flocculation
Biodegradation
flocculation
Sedimentation
Organic compounds
Leaching
Ignition
organic compound
biodegradation

Keywords

  • Aluminum
  • Decomposition
  • Leaching
  • Organic matter
  • Reuse
  • Shear strength
  • Sludge
  • Waste

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology

Cite this

Watanabe, Y., & Komine, H. (2013). Simplified prediction of changes in shear strength in geotechnical use of drinking water sludge. 3271-3274. Paper presented at 18th International Conference on Soil Mechanics and Geotechnical Engineering, ICSMGE 2013, Paris, France.

Simplified prediction of changes in shear strength in geotechnical use of drinking water sludge. / Watanabe, Y.; Komine, Hideo.

2013. 3271-3274 Paper presented at 18th International Conference on Soil Mechanics and Geotechnical Engineering, ICSMGE 2013, Paris, France.

Research output: Contribution to conferencePaper

Watanabe, Y & Komine, H 2013, 'Simplified prediction of changes in shear strength in geotechnical use of drinking water sludge', Paper presented at 18th International Conference on Soil Mechanics and Geotechnical Engineering, ICSMGE 2013, Paris, France, 13/9/2 - 13/9/6 pp. 3271-3274.
Watanabe Y, Komine H. Simplified prediction of changes in shear strength in geotechnical use of drinking water sludge. 2013. Paper presented at 18th International Conference on Soil Mechanics and Geotechnical Engineering, ICSMGE 2013, Paris, France.
Watanabe, Y. ; Komine, Hideo. / Simplified prediction of changes in shear strength in geotechnical use of drinking water sludge. Paper presented at 18th International Conference on Soil Mechanics and Geotechnical Engineering, ICSMGE 2013, Paris, France.4 p.
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