Date Approved
3-10-2025
Embargo Period
3-18-2025
Document Type
Dissertation
Degree Name
Doctor of Philosophy (Ph.D.)
Department
Civil engineering
College
Henry M. Rowan College of Engineering
Advisor
Cheng Zhu, PhD
Committee Member 1
Kauser Jahan, PhD
Committee Member 2
Wei Xue, PhD
Committee Member 3
Melissa Montalbo-Lomboy, PhD
Committee Member 4
Theresa Andrejack Loux, PhD
Keywords
Biocementation;Coastal erosion;Desiccation crack;EICP;Heavy metal;MICP
Disciplines
Civil and Environmental Engineering | Engineering | Environmental Engineering
Abstract
Geotechnical engineering is currently facing challenges, including accommodating rapid urbanization, adapting to climate change impacts, and prioritizing sustainability, all while ensuring the safety and stability of critical infrastructure. Biocementation is a recently developed new branch in geotechnical engineering that offers innovative and eco-friendly solutions by leveraging natural processes to enhance soil properties. This dissertation examines the potential of soybean extract urease as a cost-effective substitute for analytical-grade enzymes in Enzyme Induced Carbonate Precipitation (EICP) applications for biocementation. This research examines its effectiveness in various aspects, such as coastal erosion control, desiccation crack remediation, and the removal of heavy metals. Essential parameters of EICP, including pH, temperature, cementation, and enzyme concentration, were evaluated to enhance calcium carbonate precipitation while ensuring cost efficiency. The findings demonstrate that EICP significantly enhances soil strength, decreases soil permeability, improves erosion resistance, and effectively reduces concentrations of heavy metals. The study emphasizes the promise of soybean extract urease as an alternative to traditional soil stabilization techniques, highlighting the viability of EICP as an innovative approach to contemporary engineering challenges by promoting geoenvironmental sustainability through cost-effective soil enhancement and pollution reduction strategies.
Recommended Citation
Roksana, Kaniz, "EFFICIENCY OF ENZYME INDUCED CARBONATE PRECIPITATION (EICP) BY CRUDE EXTRACT UREASE FOR GEOTECHNICAL AND GEOENVIRONMENTAL APPLICATIONS" (2025). Theses and Dissertations. 3341.
https://rdw.rowan.edu/etd/3341
