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Fundamentals of Biopolymer-based Soil Treatment (BPST) and Biopolymer-treated Soil (BPTS)
Why BPST?
BPST from Micro to Macro
Micro
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Characterization of the clay-water-ion interaction in aqueous phase using advance liquid cell microscopy
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Characterization of particle-biopolymer hydrogel interaction and bonding behavior using Microfluidic chip (MFC)
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Investigation of new biopolymer material and treatment method (e.g. cross-link) for civil engineering practices
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Environment and clay mineral effect on biopolymer rheology
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Interface adhesion characterization of biopolymer-soils using atomic force microscope (AFM)
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Constitutive modeling on the biopolymer-treated soils using empirical relationships and DEM (Discrete Element Method)
Meso
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Laboratory tests to evaluate geotechnical properties of biopolymer-soils including:
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Sedimentation ​
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(Wave-based) Consolidation
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Soil-water-characteristic (SWC)
: Drying and Wetting -
Unconfined compression (for UCS) and 3-to-4 point bending (for flexural strength)
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Direct shear (DS)
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Interface shear
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Static Triaxial (CU, UU)
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Cyclic Triaxial
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Resonant Column and Torsional Shear (RC/TS)
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Hydraulic conductivity
:Constant & Falling head, pressurized -
Durability / Decomposition
: Heating-cooling; Wetting-drying; freezing-thawing; Acid rain
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Empirical relationship derivation
Macro
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Up-scale laboratory programs to investigate the in-situ behaviors of biopolymer-soils including:
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EFA (Erosion Function Apparatus)​
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Hydraulic flume apparatus
: 20-m-length; 0.5-m-width; 1-m-depth -
Modified Jet-Hole erosion apparatus
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Grout injection system for biopolymer-based grouts
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Prototype equipment design and production for bio-soil spraying
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Development of site implementation methods for biopolymer-soils​
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D​ry-mix and spray-system (DMS)
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Wet-mix and spray-system (WMS)
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Thermostat ground injection
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Surface stabilization and non-asphalt pavement
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Building bricks for Adobe construction
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Micro-to-Macro scale effect and efficiency
BPST - Geomechanical behavior characterization
BPST - Practical implementation technology development
Sustainable Geotechnical Engineering
BPST for Sustainable Ground Improvement and Soil Preservation (e.g. Anti-desertification)
BPST for Geohazards mitigation and recovery (e.g. Post-wildfires)
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