Eco-Friendly Stabilization of Sulfate-Rich Expansive Soils Using Geopolymers for Transportation Infrastructure [supporting datasets]

Details

• Creators:
  Yu, Xinbao ; Puppala, Anand J. ; Radovic, Miladin ; Chakraborty, Sayantan ; Jang, Jungyeon ; Huang, Oscar
• Corporate Creators:
  Transportation Consortium of South-Central States (Tran-SET) University Transportation Center for Region 6 ; University of Texas at Arlington ; Texas A&M University
• Corporate Contributors:
  United States. Department of Transportation. University Transportation Centers (UTC) Program ; United States. Department of Transportation. Research and Innovative Technology Administration
• Subject/TRT Terms:
  Electron Microscopy Geopolymer Concrete Infrastructure Sulfate-rich Soils Laboratory Tests Microstructure Pavements Properties Of Materials Soil Stabilization Stabilization Sulfate Resisting Cement Sustainability Swelling Soils

  More +
• Publication/ Report Number:
  19GTUTA01
• Resource Type:
  Dataset
• Geographical Coverage:
  United States
• Corporate Publisher:
  Transportation Consortium of South-Central States
• Abstract:
  Traditional calcium-based stabilizers, such as lime, to stabilize sulfate-rich expansive soils, are lasting-challenges in geotechnical engineering. The biggest problem with using calcium-based stabilizers is that when calcium and water are exposed to sulfate-rich expansive soils, they form ettringite as an expansive mineral, which causes sulfate-induced heaving. The study aimed to investigate the feasibility of stabilizing sulfate-rich expansive soils using geopolymers for transportation infrastructure. Literature review on sulfate-induced heaving and sulfate-rich soils stabilized with geopolymers suggests a direction for how to stabilize sulfate soils using geopolymers. The engineering tests were conducted to determine the swell, shrinkage, and strength behavior of natural, lime stabilized- and geopolymer-stabilized soils. Scanning electron microscopy (SEM) with energy-dispersive X-ray spectroscopy (EDS) and X-ray diffractometer (XRD) tests were performed to compare the microstructural changes of geopolymer-stabilized soils with natural and lime-stabilized soils. Laboratory tests were conducted considering the influence of the geopolymer composition, dosage, and curing period to investigate the effect of the geopolymer in stabilizing the sulfate-rich expansive soils.
• Format:
  ZIP
• Funding:
  69A3551747106
• Collection(s):
  University Transportation Centers US Transportation Collection
• Main Document Checksum:
  urn:sha-512:cd04ef985706ba758999cde7f9418796a0fdb4fdb89f5ba8ae8e1a2a3b0b0f627fd62faca796ba104ea9a27578d094cbbb4cb6994ac8f16ff0f72a84a5ad4d5f
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/56842/dot_56842_DS1.pdf
• File Type:
  [PDF - 140.80 KB ]