Improvement of the bearing capacity of lateritic gravel by a geopolymer binder: road construction in tropical countries

Research output: Contribution to journalArticleResearchpeer review

Authors

  • Joseph Bikoun Mousi
  • Rolande Aurelie Tchouateu Kamwa
  • Juvenal Giogetti Deutou Nemaleu
  • Sylvain Tome
  • Martine Gérard
  • Marie Annie Etoh
  • Claudia Pamella Manou Oyong
  • Jacques Etame

Research Organisations

External Research Organisations

  • University of Douala
  • Ministry of Scientific Research and Innovation-Cameroon
  • Universite Paris 6
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Details

Original languageEnglish
Article number242
Number of pages11
JournalInnovative Infrastructure Solutions
Volume9
Issue number7
Early online date7 Jun 2024
Publication statusPublished - Jul 2024

Abstract

Owing to its availability and affordability, lateritic soils are one of common building materials widely used for the development of infrastructures in sub-tropical and tropical regions. Their engineering properties are mostly influenced by such factors including climate, vegetation, typography, and parent rock. Seeking a proper method to improve the bearing ability of lateritic soils is still of interest. The present work deals with the use of low-energy and alternative pozzolan based-geopolymer binder for the lateritic gravel’s stabilization for road construction in tropical countries. The stabilization ratio of 0 up 15 wt% were made and labelled LS0, LS5, LS10 and LS15, respectively. The synthesized products were characterized using several analytical techniques including mineralogical, geotechnical, and physical characteristics. The results revealed the efficiency of geopolymer binders to improve the load-bearing capacity of gravelly soils. Optimal characteristics are obtained with the samples made with 10 wt% of the geopolymer binder (IP ≤ 20, CBR > 164.2 and density between 1.8 and 2). This allowed us to classify LS5 as a foundation layer material for T1–T3 traffic, LS10 and LS15 for the base layer of T1–T3 traffic and a foundation layer above T3. The use of the natural pozzolan based geopolymer, subject to a durability study, appears as an eco-efficient way for the stabilization of lateritic gravel for road construction in tropical nations in the same way as hydraulic binders.

Keywords

    Geopolymer binder, Geotechnical properties, Gravelly soil, Load bearing, Road construction

ASJC Scopus subject areas

Cite this

Improvement of the bearing capacity of lateritic gravel by a geopolymer binder: road construction in tropical countries. / Mousi, Joseph Bikoun; Kamwa, Rolande Aurelie Tchouateu; Nemaleu, Juvenal Giogetti Deutou et al.
In: Innovative Infrastructure Solutions, Vol. 9, No. 7, 242, 07.2024.

Research output: Contribution to journalArticleResearchpeer review

Mousi, JB, Kamwa, RAT, Nemaleu, JGD, Tome, S, Gérard, M, Etoh, MA, Oyong, CPM & Etame, J 2024, 'Improvement of the bearing capacity of lateritic gravel by a geopolymer binder: road construction in tropical countries', Innovative Infrastructure Solutions, vol. 9, no. 7, 242. https://doi.org/10.1007/s41062-024-01575-6
Mousi, J. B., Kamwa, R. A. T., Nemaleu, J. G. D., Tome, S., Gérard, M., Etoh, M. A., Oyong, C. P. M., & Etame, J. (2024). Improvement of the bearing capacity of lateritic gravel by a geopolymer binder: road construction in tropical countries. Innovative Infrastructure Solutions, 9(7), Article 242. https://doi.org/10.1007/s41062-024-01575-6
Mousi JB, Kamwa RAT, Nemaleu JGD, Tome S, Gérard M, Etoh MA et al. Improvement of the bearing capacity of lateritic gravel by a geopolymer binder: road construction in tropical countries. Innovative Infrastructure Solutions. 2024 Jul;9(7):242. Epub 2024 Jun 7. doi: 10.1007/s41062-024-01575-6
Mousi, Joseph Bikoun ; Kamwa, Rolande Aurelie Tchouateu ; Nemaleu, Juvenal Giogetti Deutou et al. / Improvement of the bearing capacity of lateritic gravel by a geopolymer binder : road construction in tropical countries. In: Innovative Infrastructure Solutions. 2024 ; Vol. 9, No. 7.
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AU - Kamwa, Rolande Aurelie Tchouateu

AU - Nemaleu, Juvenal Giogetti Deutou

AU - Tome, Sylvain

AU - Gérard, Martine

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AU - Etame, Jacques

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