Case Study Analyses of Innovative Modification of Geo-Engineering Properties of Sub-Standard Materials for Road Construction

In any field of material science and engineering applications, the stability of a material is of primary importance. This paper introduces, through case study analysis of several projects that have been successfully implemented in Ethiopia, South Sudan, Somalia, Tanzania and Kenya, the innovatively developed TACH-MD Value Engineering (VE) technologies that modify and stabilize the geotechnical engineering properties of problematic in-situ subgrade soils and sub-standard geomaterials for use in pavement and foundation construction. The degree of enhanced performance is discussed on the basis of analysis of the modified/stabilized geo-engineering properties of the geomaterials. The versatility and effectiveness of these technologies is demonstrated for varying extreme environmental conditions including swampy flood plains, drought riddled areas, zones affected with torrential rainfall and simultaneously predominated with problematic soils. Case examples are also presented on how the technologies provided pragmatic engineering solutions to the extreme lack of suitable road construction materials in South Sudan through the use of more than 70% of the modified locally available problematic geomaterials culminating in substantial cost savings of 30 ~ 60% and construction time savings of more than 60%, whilst maintaining or enhancing the structural capacity. Further, the structural and value engineering benefits are demonstrated for each case scenario.

• Record URL:
  • https://proceedings-seoul2015.piarc.org/ressources/files/4/IP0290-Mukabi-E.pdf
• Availability:
  • Find a library where document is available. Order URL: https://www.piarc.org/en/order-library/25346-en-Proceedings%20of%20the%20XXVth%20World%20Road%20Congress%20-%20Seoul.htm
• Supplemental Notes:
  • Abstract reprinted with permission of the World Road Association – PIARC.
• Corporate Authors:

  World Road Association (PIARC)

  La Grande Arche, Paroi Nord, Niveau 5
  F-92055 La Defense Cedex,   France 
• Authors:
  • Mukabi, John N
  • Wekesa, Sirmoi F
  • Okado, Joram
  • Amoyo, George
  • WAMBUGU, F
  • Njoroge, Bernard N
  • Waweru, Kihuha N
• Conference:
  • 25th World Road Congress
  • Location: Seoul , Korea, South
  • Date: 2015-11-3 to 2015-11-7
• Publication Date: 2015

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; Illustrations; Photos; References; Tables;
• Pagination: 16p
• Monograph Title: Proceedings of the 25th World Road Congress - Seoul 2015: Roads and Mobility - Creating New Value from Transport

Subject/Index Terms

• TRT Terms: Building materials; Foundation soils; Geotechnical engineering; Pavement design; Road construction; Soil stabilization; Soils; Subgrade materials; Value engineering
• Geographic Terms: Ethiopia; Kenya; Somalia; South Sudan; Tanzania
• Subject Areas: Construction; Geotechnology; Highways; Materials; Pavements;

Filing Info

• Accession Number: 01687749
• Record Type: Publication
• ISBN: 9782840604235
• Files: TRIS
• Created Date: Dec 5 2018 11:11AM