Article
Soil Science
Hao Meng, Yufeng Gao, Jia He, Yongshuai Qi, Lei Hang
Summary: This study explored the potential of MICP in reducing wind erosion of desert soil. The optimal cementation solution concentration and spraying volume were found to be 0.2 M and 4 L/m2, respectively. The results demonstrated that MICP significantly enhanced the soil bearing capacity and wind erosion resistance, with the sandy land showing maximum soil bearing capacity within three days and minimal wind erosion after 30 days.
Article
Engineering, Geological
Hao Meng, Shuang Shu, Yufeng Gao, Jia He, Yukuai Wan
Summary: Kitchen waste was used for Sporosarcina pasteurii cultivation and in wind erosion control of desert soil through MICP. After optimization, the kitchen waste-based medium showed comparable results to conventional media, demonstrating the potential for large-scale applications in wind erosion control. Scanning electron microscopy confirmed the bridge effect of calcium carbonate crystals in the soil matrix, indicating the effectiveness of using kitchen waste as a cost-effective alternative nutrient.
Article
Engineering, Geological
Yang Yang, Yang Xiao, Liang Cheng, Mohamed A. Shahin, Hanlong Liu
Summary: This paper introduces a new method to maximize the retention of bacteria in porous media by using an in situ biomass flocculation technique, resulting in a homogeneous distribution of bacteria activity. The method has been tested and successfully achieved homogenous distribution of urease activity, produced CaCO3 content, and compressive strength. This method is significant for improving soil performance and ensuring uniform construction effect.
Article
Engineering, Environmental
Seung Hee Chae, Hyeonyong Chung, Kyoungphile Nam
Summary: The study investigated the application methods of Microbially Induced Calcite Precipitation (MICP) on different soil types for wind erosion prevention. It was found that the pouring method was suitable for medium sand, while the mixing method was more effective for other soil types. The presence of calcium reduced bacterial penetrability, impacting the effectiveness of MICP. Choosing the appropriate application method based on soil properties can help mitigate soil erosion.
ENVIRONMENTAL ENGINEERING RESEARCH
(2021)
Article
Engineering, Geological
Monika Dagliya, Neelima Satyam, Meghna Sharma, Ankit Garg
Summary: Wind erosion is a significant natural calamity worldwide. This study evaluates the feasibility of using microbially induced calcium carbonate precipitation to mitigate wind-induced erosion in the Thar desert of India. The results show that the biocemented sand samples are more resistant to erosion compared to untreated sand, and longer treatment duration leads to thicker crust and higher surface strength.
JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING
(2022)
Article
Engineering, Civil
Jia He, Changhang Fang, Lei Hang, Yongshuai Qi, Xunyu Mao, Boyang Yan, Yundong Zhou, Yufeng Gao
Summary: The study evaluated the use of enzyme induced carbonate precipitation (EICP) method for controlling internal erosion under water seepage in dams and dikes. Gap-graded soils were improved by EICP for 1 to 5 passes, showing stronger resistance against seepage erosion compared to untreated soil samples and those treated with the microbially induced carbonate precipitation (MICP) method. EICP was also effective in reducing axial deformation of soil.
GEOMECHANICS AND ENGINEERING
(2021)
Article
Green & Sustainable Science & Technology
Lei Hang, Feng Yang, Jie Xu, Zihao Zhao, Wei Xiao, Jia He
Summary: Biocement can be achieved through the microbially induced carbonate precipitation (MICP) process, which is an eco-friendly method for civil and environmental engineering applications. The effective production of ureolytic bacteria is a key step in this method. This study optimized the cultivation method of Sporosarcina pasteurii and conducted soil stabilization tests.
Article
Environmental Sciences
Mengzhu Song, Tian Lan, Yuan Meng, Tongyao Ju, Zhehong Chen, Pengfei Shen, Yufeng Du, Yongchi Deng, Siyu Han, Jianguo Jiang
Summary: Microbially induced calcium carbonate precipitation (MICP) is a potential treatment method for municipal solid waste incineration fly ash (MSWI-FA) solidification and stabilization. However, the harsh environment hampers the effectiveness of MICP treatment due to the decreased urease activity of bacteria. This study investigated the influence of different mixing ratios of metakaolin (MK) on the properties of MSWI-FA material and MICP-treated material, and found that MICP treatment improved the compressive strength of samples. However, the addition of MK beyond a certain ratio did not significantly increase the compressive strength.
Article
Environmental Sciences
Junchen Xiang, Jingping Qiu, Yuying Song, Yingyan Miao, Xiaowei Gu
Summary: The study introduces a new method using enzyme-induced carbonate precipitation modified acidophilus bacteria solution to remove phosphorus and fluorine in phosphogypsum. The mixture of MICP and EICP (ME21) shows the highest removal efficiency for phosphorus and fluorine, increasing impurity removal by about 13%. The good acid resistance of the urease enzyme and acidophilic bacteria improves their growth and activity, leading to a 22% increase in biomineralization rate. The ME treatment is also 30% cheaper than traditional binder treatment, making it a low-cost and environmentally friendly option.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Engineering, Geological
Hai Lin, Sean T. O'Donnell, Muhannad T. Suleiman, Edward Kavazanjian, Derick G. Brown
Summary: The study demonstrates that both EICP and MICP treatments can create a cemented soil zone around pervious concrete piles, improving pile capacity and load transfer under compression loading.
JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING
(2021)
Article
Construction & Building Technology
Saeed Talamkhani
Summary: The current study applies a soft-computing approach based on the gradient boosting method to predict the unconfined compressive strength (UCS) of sands treated with microbially-induced calcite precipitation (MICP). The finding demonstrates that the gradient boosting method outperformed five commonly used machine learning algorithms in predicting the UCS of biocemented sands. Using the gradient boosting, the predicted UCS has a strong correlation with the actual values (R-2 = 0.95).
ADVANCES IN CIVIL ENGINEERING
(2023)
Article
Construction & Building Technology
Xiaohao Sun, Linchang Miao, Linyu Wu, Hengxing Wang
Summary: This study developed a theoretical calculation model with microbially induced carbonate precipitation (MICP) to repair concrete cracks. The research found that the concentration of suspended biomass in cracks gradually decreased during the tests, while biofilm and solute concentrations were larger at the inlet, resulting in an increase in productive rates for CaCO3, indicating better repair effects. The proposed mathematical model represents a platform technology that utilizes microbial metabolism and repair period to impart novel multifunctionality to structural materials.
CEMENT & CONCRETE COMPOSITES
(2021)
Article
Engineering, Civil
Zheng Lu, Yu Qiu, Jie Liu, Chengcheng Yu, Hailin Yao
Summary: Microbially induced carbonate precipitation (MICP) is a promising topic for ground stabilization. This paper presents the practical effect of stabilizing expansive soil using MICP, discussing the bacterial activity and the effect on soil properties. The results show that MICP method mitigates soil expansion, reduces fine particles, and improves strength values. The infiltration model test demonstrates the coating effect on the topsoil. The topsoil also shows better treatment than the deeper soil based on CaCO3 content and treatment effect.
GEOMECHANICS AND ENGINEERING
(2023)
Article
Chemistry, Physical
Joanna Fronczyk, Nadella Marchelina, Adam Pyzik, Malgorzata Franus
Summary: Soil properties are crucial for the safety of civil engineering structures. This study focused on the use of microbially induced calcite precipitation (MICP) as a soil improvement method and aimed to find the optimal combination of a bio-cementation solution. Laboratory tests were conducted using bacteria and different cementation solutions, and the results showed that higher concentrations of calcium lactate (CaL) and magnesium (Mg) led to more precipitates during the cementation process. The research achieved higher amounts of precipitates with the optimum combination of bio-cementation solutions, but further investigation is needed to analyze the precipitation processes and reduce the environmental impact.
Review
Environmental Sciences
Mengzhu Song, Tongyao Ju, Yuan Meng, Siyu Han, Li Lin, Jianguo Jiang
Summary: MICP technology is considered a promising solution for environmental issues such as solid waste treatment and soil remediation, utilizing calcium from solid waste as an alternative source. Through microbially induced calcium carbonate precipitation, soil remediation, solid waste treatment, and bioconcrete generation can be achieved.
Article
Engineering, Multidisciplinary
Junliang (Julian) Tao, Sichuan Huang, Yong Tang
BIOINSPIRATION & BIOMIMETICS
(2020)
Article
Engineering, Geological
Alejandro Martinez, Jason Dejong, Idil Akin, Ali Aleali, Chloe Arson, Jared Atkinson, Paola Bandini, Tugce Baser, Rodrigo Borela, Ross Boulanger, Matthew Burrall, Yuyan Chen, Clint Collins, Douglas Cortes, Sheng Dai, Theodore DeJong, Emanuela Del Dottore, Kelly Dorgan, Richard Fragaszy, J. David Frost, Robert Full, Majid Ghayoomi, Daniel Goldman, Nicholas Gravish, Ivan L. Guzman, James Hambleton, Elliot Hawkes, Michael Helms, David Hu, Lin Huang, Sichuan Huang, Christopher Hunt, Duncan Irschick, Hai Thomas Lin, Bret Lingwall, Alen Marr, Barbara Mazzolai, Benjamin McInroe, Tejas Murthy, Kyle O'Hara, Marianne Porter, Salah Sadek, Marcelo Sanchez, Carlos Santamarina, Lisheng Shao, James Sharp, Hannah Stuart, Hans Henning Stutz, Adam Summers, Julian Tao, Michael Tolley, Laura Treers, Kurtis Turnbull, Rogelio Valdes, Leon van Paassen, Gioacchino Viggiani, Daniel Wilson, Wei Wu, Xiong Yu, Junxing Zheng
Summary: The interactions between biological organisms and soil provide unique principles and design ideas for addressing geotechnical challenges, while also offering potential benefits for understanding mechanisms in biology.
Editorial Material
Robotics
Junliang (Julian) Tao
Article
Robotics
Dongting Li, Sichuan Huang, Yong Tang, Hamidreza Marvi, Junliang Tao, Daniel M. Aukes
Summary: This research presents a novel approach to optimize the gait design and propulsion efficiency of robots using granular Resistive Force Theory and compliance. It establishes the foundation for plate modeling and propulsion mechanism design, and conducts experimental verification in dynamic simulation.
IEEE ROBOTICS AND AUTOMATION LETTERS
(2021)
Article
Engineering, Marine
Chen Wang, Ye Yuan, Fayun Liang, Junliang Tao
Summary: Scour is a natural phenomenon affected by seabed or riverbed materials, nearby obstructions, and water flow. Water-sediment interaction is critical and exploring the scour mechanism is essential. This study shows that properties of soil layers govern erosion initiation and scour range, while underlying layer properties determine final scour depth.
Article
Engineering, Geological
Yong Tang, Junliang Tao
Summary: This study investigates the mechanism of shallow rotational penetration in dry sand using the discrete element method. The results indicate that rotation reduces penetration resistance and reveal the rotational effects at the particle-scale and meso-scale.
Article
Engineering, Geological
Yi Zhong, Junliang (Julian) Tao
Summary: The internet of the underground things (IoUT) is a emerging field that connects underground sensing nodes for applications in various fields. This study focuses on developing a vibration-based underground communication system inspired by subterranean animals. The prototype system shows promising performance in transmitting textual and imaginary information with high robustness and reliability.
JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING
(2022)
Article
Engineering, Marine
Xiwei Li, Leon van Paassen, Junliang Tao
Summary: The unique root structure of mangrove forests inspired a new measure of skirt piles to mitigate local scour around monopile foundations. Numerical simulations and laboratory experiments were used to evaluate the effectiveness, showing that skirt piles reduce near-bed tangential velocity and affect the vertical flow field around the monopile. Parameters such as spacing and number of skirt piles were found to impact scour depth and volume.
Editorial Material
Engineering, Geological
Yi Zhong, Sichuan Huang, Junliang Julian Tao
JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING
(2023)
Article
Engineering, Geological
Hosain Bagheri, Daniel Stockwell, Benjamin Bethke, Nana Kwame Okwae, Daniel Aukes, Junliang Tao, Hamid Marvi
Summary: This study presents a bio-inspired burrowing robot and explores its burrowing behavior in glass beads. The study found that the four-bladed screw provides higher translational velocity but comes at the expense of higher motor torque and power, resulting in higher cost of transport. Additionally, operating the one-bladed screw at a lower rotational speed provides lower cost of transport. The tubercled fin design showed promising results in decreasing vertical drag and increasing translational velocity during burrowing.
Proceedings Paper
Engineering, Civil
Sichuan Huang, Junliang Tao
Summary: Many organisms have well-adapted strategies for burrowing in soils, which inspired the design of a modular burrowing robot with an extensible body and a rotatable tip. The robot was tested in a bed of glass beads and its performance evaluated under different tip designs and control strategies, providing insights into the general principles of burrowing in granular media.
GEO-CONGRESS 2022: SITE AND SOIL CHARACTERIZATION, COMPUTATIONAL GEOTECHNICS, RISK, AND LESSONS LEARNED
(2022)
Proceedings Paper
Engineering, Civil
Yi Zhong, Yunqi Gao, Julian Tao
Summary: The study demonstrates through experiments that seismic waves can serve as a communicational information carrier underground, and on-off keying modulation is a viable method to encode the signals.
IFCEE 2021: FROM TRADITIONAL TO EMERGING GEOTECHNICS
(2021)
Proceedings Paper
Engineering, Civil
Yong Tang, Junliang Julian Tao
Summary: The study shows that rotational movement can reduce penetration resistance, with a more significant effect at higher rotational speeds. As rotational velocity increases, the reduction effect on resistance also strengthens, but there exists an optimal rotational speed condition.
IFCEE 2021: FROM TRADITIONAL TO EMERGING GEOTECHNICS
(2021)
Proceedings Paper
Engineering, Geological
S. Huang, N. Mahabadi, J. Tao
BIOGEOTECHNICS (GEO-CONGRESS 2020)
(2020)
Proceedings Paper
Engineering, Geological
S. Huang, J. Tao
BIOGEOTECHNICS (GEO-CONGRESS 2020)
(2020)
