The requirements for autonomic microbiologically-induced calcite-precipitation in concrete

This paper addresses the complex problem of using microbiologically-induced calcite-precipitation as a means of autonomic self-healing of concrete and describes the requirements for the encapsulated bacteria, precursors and nutrients. The paper discusses the need to use copious spore-forming alkaliphilic bacteria that germinate relatively quickly and considers the kinetics of microbiologically-induced calcite-precipitation. Issues relating to pH and temperature are also discussed. The paper also considers the compatibility of the nutrients and organic precursors with concrete. It is concluded that whilst the encapsulation of bacteria, nutrients and organic precursors that lead to microbiologically-induced calcite-precipitation is readily achievable, optimisation of the process requires further biological and engineering research. Some key areas of further fundamental research are highlighted

Dataset for application of expanded perlite encapsulated bacteria and growth media for self-healing concrete

The dataset contains the data used to prepare the research paper "Application of expanded perlite encapsulated bacteria and growth media for self-healing concrete". This research investigated the self-healing performance of concrete in terms of the number of bacterial spores required and the concentration and composition of nutrients and precursors. The dataset contains: 1. The particle size distribution of the perlite used. 2. Calculations of the number of bacterial cells to calcium acetate. 3. The optical density of bacteria growth in three media. 4. Calcite productivity in the three media in relation to number of bacteria cells. 5. Details of the mortar mix designs. 6. The mean initial surface absorption of mortars from 10 to 120 minutes