Stiffness and strength properties of spent coffee grounds-recycled glass geopolymers

Spent coffee ground (CG) geopolymers are novel cementitious materials, which utilise industrial wastes such as fly ash and ground granulated blast furnace slag as precursors. Several past studies have investigated the strength development of these recycled products, and established their suitability as road subgrade construction materials. This paper evaluates the incorporation of recycled glass (RG) into the CG geopolymer blend to further enhance the strength of the mix, as well as investigates the resilient modulus (Mᵣ) properties of CG+RG. Repeat Load Triaxial (RLT) tests were undertaken to investigate the flexibility and deformation pattern of CG+RG geopolymer subgrades under repeated traffic loading. The relationship between RG replacement ratio and material stiffness was furthermore established. California Bearing Ratio (CBR) tests on the CG+RG geopolymers indicate that the CBR value of these materials exceeds those of naturally occurring subgrade materials. The CBR and Mᵣ values of the CG+RG geopolymers are essential design parameters for the usage of this novel construction material in subgrades.

• Record URL:
  • https://doi.org/10.1080/14680629.2017.1408483
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/14680629
• Supplemental Notes:
  • © 2017 Informa UK Limited, trading as Taylor & Francis Group. Abstract reprinted with permission of Taylor & Francis.
• Authors:
  • Arulrajah, Arul
  • Kua, Teck-Ang
  • Suksiripattanapong, Cherdsak
  • Horpibulsuk, Suksun
• Publication Date: 2019-4

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: pp 623-638
• Serial:
  • Road Materials and Pavement Design
  • Volume: 20
  • Issue Number: 3
  • Publisher: Taylor & Francis
  • ISSN: 1468-0629
  • EISSN: 2164-7402
  • Serial URL: http://www.tandfonline.com/loi/trmp20

Subject/Index Terms

• TRT Terms: California bearing ratio; Glass; Modulus of resilience; Polymers; Recycled materials; Repeated loads; Stiffness; Strength of materials; Triaxial shear tests; Waste products (Materials)
• Uncontrolled Terms: Geopolymers
• Subject Areas: Highways; Materials; Pavements;

Filing Info

• Accession Number: 01696729
• Record Type: Publication
• Files: TRIS
• Created Date: Feb 28 2019 4:37PM