Open Access Journal

ISSN : 2456-1290 (Online)

International Journal of Engineering Research in Computer Science and Engineering (IJERCSE)

Monthly Journal for Computer Science and Engineering

Open Access Journal

International Journal of Engineering Research in Mechanical and Civil Engineering (IJERMCE)

Monthly Journal for Mechanical and Civil Engineering

ISSN : 2456-1290 (Online)

Self Healing Concrete for the Development of Sustainable Concrete

Author : Dr.Sadath Ali Khan Zai 1 Dr. L.Manjesh 2

Date of Publication :7th August 2016

Abstract: In reviewing technology advances through the centuries, it is evident that material development plays a key role, considerable efforts are still being made in every part of world to develop new construction materials, In the construction industry, concrete technology is heading towards entirely new era by way of using self healing bacterial concrete. Self-Healing Bacterial Concrete refers to a new generation of concrete in which selective cementation of porous media by microbiologically induced CaCO3 has been introduced for remediation of damaged structural formation or micro cracks. Which includes some widespread possibilities to close cracks in a cementations material, since strength and ductility are the two major important factors to be considered in the design of R.C.C structures? The main focus of the present research investigation is to obtain the performance of the concrete by the microbiologically induced special growth/filler. where bacteria is induced in the concrete to heal up the faults / cracks by using the bacteria “Bacillus subtilis strain No.JC3”. Calcite formation by Bacillus subtilis JC3 is a laboratory bacterium, which can produce calcite which precipitates on suitable media supplemented with a calcium source. The culture of bacteria from the soil sample at Microbiology and Biotechnology laboratories of Bangalore University, Bangalore and is maintained constantly on nutrient agar slants. A series of 150 mm cube specimen with design mix of M20 grade of concrete were casted by adding bacteria having 104 , 105 ,106 ,107 cells/ml-media of concentration for the optimization. The study showed a significant increase in the compressive strength due to the addition of bacteria for a cell concentration of 105 cells per ml . The investigation further extended to study the flexural behaviour of self healing bacterial reinforced concrete. A three point bending test is carried out on three test beam specimens with dimension 150mmx230mm and an effective length of 2200mm to obtain load deflection characteristics. By summarizing experimental results, it is observed that addition Bacillus subtilis JC3 ensures structural integrity in enhancement of ductility and energy absorption capabilities, this is due to the bio-mineralization of calcium carbonate in the concrete. Also Characterization studies were performed to confirm the calcite precipitation through X-ray Diffraction and Scanning Electron Microscope.

Reference :

    1. Henk M. Jonkers, A. T. (2010). Application of bacteria as self-healing agent for the development of sustainable concrete. Ecological Engineering.
    2.  J.Y. Wang, K. V. (2010). Potential of Applying Bacteria to Heal Cracks in Concrete. 1Magnel Laboratory for Concrete Research.
    3.  Ramakrishnan, S. S. (2000). Microbiologically - Enhanced Crack Remediation (MECR). South Dakota School of Mines and Technology.
    4. S.Maheswaran. (2014). Strength improvement studies using new type wild strain Bacillus cereus on cement mortar. 1CSIR-Structural Engineering Research Centre.
    5. Wei Li, L.-P. L.-P.-J.-Y. (2011). Calcite precipitation induced by bacteria and bacterially produced carbonic anhydrase. Institute of Resource Biology and Biotechnology
    6. Jagadeesha Kumar B G, R. P. (2013). Effect of Bacterial Calcite Precipitation on Compressive Strength of Mortar Cubes. International Journal of Engineering and Advanced Technology.
    7. Jonkers, R. M. (2013). Practical Approach for Production of Bacteria-Based Agent-Contained Light Weight Aggregates to Make Concrete Self-Healing. Faculty of Civil Engineering and Geosciences, Materials & Environment section.
    8. Jonkers, V. W. (2012). Application of bacteria-based repair system to damaged concrete structures. Delft University of Technology, Delft, the Netherlands.
    9.  M.V. Seshagiri Rao, V. S. (2013). Bioengineered Concrete - A Sustainable Self-Healing Construction Material. Research Journal of Engineering Sciences.
    10. Ramakrishnan, R. K. (2013). Improvement of concrete durability by bacterial mineral precipitation. Department of Civil & Environmental Engineering.
    11. Wiktor, S. S. (2013). Potential of bacteria-based repair solution as healing agent for porous network concrete. Delft University of Technology, Faculty of Civil Engineering & Geosciences.
    12. Aissa, D. E. (2012). Self-Healing Materials Systems: Overview of Major Approaches and Recent Developed Technologies. Advances in Materials Science and Engineering.

Recent Article