Conference Proceedings

A MODEL OF GRANULAR MATERIALS PARTIALLY CEMENTED BY BACTERIAL CALCITE

Elaheh Kashizadeh, Abhijit Mukherjee, Antoinette Tordesillas, P Wriggers (ed.), M Bischoff (ed.), E Onate (ed.), DRJ Owen (ed.), T Zohdi (ed.)

V INTERNATIONAL CONFERENCE ON PARTICLE-BASED METHODS - FUNDAMENTALS AND APPLICATIONS (PARTICLES 2017) | INT CENTER NUMERICAL METHODS ENGINEERING | Published : 2017

Abstract

Nature aggregates granular materials such as sand, silt and clay into form beach rocks, anthills and other forms of microbialites. A common bio-geo-chemical cementation occurs due to the mineralization of calcium through bacterial enzymatic action, often called Microbial Induced Calcium Carbonate Precipitation (MICP). Unlike engineered cement, which consumes very high amounts of energy and emits large quantities of CO2, this natural cementation occurs in ambient conditions, with negligible energy consumption. Hence, it is a sustainable construction method. Natural cementation is a gradual process, where grains are initially bonded to form clumps. The clumps grow in size to form aggregates, f..

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