Prof. Varenyam Achal
Prof. Varenyam Achal
East China Normal University, China
Title: Biogrout – a novel eco-friendly ground improvement material to control soil liquefaction
Soil liquefaction during earthquakes is one of major causes of damage to all types of structures including buildings, dikes, and seawalls. Although there are many physical and chemical methods available for treating or improving sites susceptible to soil liquefaction by forming grouts, they are often costly and environmentally unfriendly. The drawbacks of such grouting techniques warrant finding suitable novel grout material. In order to overcome drawbacks of those techniques, this talk discusses about biogrout ground improvement technology for soil improvement. This technique utilizes the metabolic pathways of bacteria to form calcite that binds the soil particles together, leading to increased soil strength and stiffness. This research represents a significant contribution to interdisciplinary research of earth science, geotechnical engineering, and microbiology.
Dr. Varenyam Achal is an Associate Professor at East China Normal University (ECNU), Shanghai, China. He is also Assistant Director of The Global Institute for Urban and Regional Sustainability at ECNU. He serves as academic editor of journal PloS One. He was Assistant Professor at Chinese Academy of Sciences (CAS) between 2010 and 2012. In 2010, he obtained International Young Scientist fellowship from CAS after completing his Ph.D. study from the Thapar University, India. Dr. Achal has a very board interest in solving environmental related issues and biological based building materials. His major research interests include remediation technologies for heavy metals and soil liquefaction including grouting materials, and microbial concrete for sustainable environment.