Mathematical Modelling and Simulation of Biogrout

Biogrout is a method to reinforce sand and gravel by the production of calcium carbonate. This calcium carbonate is produced using micro-organisms that are either present in the subsoil or injected into it. The micro-organisms are supplied with urea and calcium. Subsequently, they catalyse the hydrolysis of urea, by which carbonate is formed. In...

Modelling BIOGROUT: Extension to two dimensions and a first glance in three dimensions

Biogrout is a new method to strengthen the soil. Some applications are: soil stabilization prior to tunnelling and prevention of liquefaction of the subsoil resulting from earthquakes. Biogrout is based on microbial induced carbonate precipitation. Bacteria and reactants are flushed through the soil, resulting in calcium carbonate precipitation...