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Effectiveness of tropical soil bacteria as self-healing agent in concrete

Concrete is one of the most commonly used and popular materials in construction industry. It can be designed to have certain required strength and durability based on its application and surrounding environment. However, one of the setbacks for concrete is that it can suffer from internal micro-crac...

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Main Authors: Mohd. Sam, A. R., Al-Ghaifi, H. A. A., Ahmad Norain, A. M., Abu Bakar, S., Tahir, M. M., Abd. Khalid, N. H., Mohamed, A., Basar, N.
Format: Conference or Workshop Item
Language:English
Published: 2019
Subjects:
TA Engineering (General). Civil engineering (General)
Online Access:http://eprints.utm.my/id/eprint/89626/1/ARMohdSam2019_EffectivenessofTropicalSoilBacteriaasSelf.pdf
http://eprints.utm.my/id/eprint/89626/
http://dx.doi.org/10.1088/1755-1315/220/1/012049
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spelling my.utm.896262021-02-22T06:08:24Z http://eprints.utm.my/id/eprint/89626/ Effectiveness of tropical soil bacteria as self-healing agent in concrete Mohd. Sam, A. R. Al-Ghaifi, H. A. A. Ahmad Norain, A. M. Abu Bakar, S. Tahir, M. M. Abd. Khalid, N. H. Mohamed, A. Basar, N. TA Engineering (General). Civil engineering (General) Concrete is one of the most commonly used and popular materials in construction industry. It can be designed to have certain required strength and durability based on its application and surrounding environment. However, one of the setbacks for concrete is that it can suffer from internal micro-cracks during its service life due to various reasons. Thus, in ensuring the long-term performance of concrete, the micro-cracks problem need to be addressed. This paper discusses the possibility and potential use of local tropical soil bacteria as self-healing agent in concrete. The bacteria used in the concrete mix was obtained from UTM soil, Lysinibacilluus sphaerius, isolated and cultured for further testing in concrete to determine its suitability in enhancing the concrete performance. Slump test, compressive strength test and pulse velocity test were conducted to assess the effect of the selected bacteria on concrete properties. The initial results demonstrated the capability and possibility of the selected bacteria strain to be used as healing agent in concrete. The optimun percentage of bacteria found was 4%. The compressive strength and pulse velocity of concrete containing bacteria were found to be better than control concrete by 20% and 2%, respectively. The pores of bacteria concrete were also less than control concrete. These positive effects were most likely attributed to the precipitation of calcium carbonate from bacteria activity in filling the pores in the hardened concrete. 2019-02-21 Conference or Workshop Item PeerReviewed application/pdf en http://eprints.utm.my/id/eprint/89626/1/ARMohdSam2019_EffectivenessofTropicalSoilBacteriaasSelf.pdf Mohd. Sam, A. R. and Al-Ghaifi, H. A. A. and Ahmad Norain, A. M. and Abu Bakar, S. and Tahir, M. M. and Abd. Khalid, N. H. and Mohamed, A. and Basar, N. (2019) Effectiveness of tropical soil bacteria as self-healing agent in concrete. In: 12th International Civil Engineering Post Graduate Conference, SEPKA 2018 and 3rd International Symposium on Expertise of Engineering Design, ISEED 2018, 27 August 2018 through 28 August 2018, Johor, Malaysia. http://dx.doi.org/10.1088/1755-1315/220/1/012049
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
language English
topic TA Engineering (General). Civil engineering (General)
spellingShingle TA Engineering (General). Civil engineering (General)
Mohd. Sam, A. R.
Al-Ghaifi, H. A. A.
Ahmad Norain, A. M.
Abu Bakar, S.
Tahir, M. M.
Abd. Khalid, N. H.
Mohamed, A.
Basar, N.
Effectiveness of tropical soil bacteria as self-healing agent in concrete
description Concrete is one of the most commonly used and popular materials in construction industry. It can be designed to have certain required strength and durability based on its application and surrounding environment. However, one of the setbacks for concrete is that it can suffer from internal micro-cracks during its service life due to various reasons. Thus, in ensuring the long-term performance of concrete, the micro-cracks problem need to be addressed. This paper discusses the possibility and potential use of local tropical soil bacteria as self-healing agent in concrete. The bacteria used in the concrete mix was obtained from UTM soil, Lysinibacilluus sphaerius, isolated and cultured for further testing in concrete to determine its suitability in enhancing the concrete performance. Slump test, compressive strength test and pulse velocity test were conducted to assess the effect of the selected bacteria on concrete properties. The initial results demonstrated the capability and possibility of the selected bacteria strain to be used as healing agent in concrete. The optimun percentage of bacteria found was 4%. The compressive strength and pulse velocity of concrete containing bacteria were found to be better than control concrete by 20% and 2%, respectively. The pores of bacteria concrete were also less than control concrete. These positive effects were most likely attributed to the precipitation of calcium carbonate from bacteria activity in filling the pores in the hardened concrete.
format Conference or Workshop Item
author Mohd. Sam, A. R.
Al-Ghaifi, H. A. A.
Ahmad Norain, A. M.
Abu Bakar, S.
Tahir, M. M.
Abd. Khalid, N. H.
Mohamed, A.
Basar, N.
author_facet Mohd. Sam, A. R.
Al-Ghaifi, H. A. A.
Ahmad Norain, A. M.
Abu Bakar, S.
Tahir, M. M.
Abd. Khalid, N. H.
Mohamed, A.
Basar, N.
author_sort Mohd. Sam, A. R.
title Effectiveness of tropical soil bacteria as self-healing agent in concrete
title_short Effectiveness of tropical soil bacteria as self-healing agent in concrete
title_full Effectiveness of tropical soil bacteria as self-healing agent in concrete
title_fullStr Effectiveness of tropical soil bacteria as self-healing agent in concrete
title_full_unstemmed Effectiveness of tropical soil bacteria as self-healing agent in concrete
title_sort effectiveness of tropical soil bacteria as self-healing agent in concrete
publishDate 2019
url http://eprints.utm.my/id/eprint/89626/1/ARMohdSam2019_EffectivenessofTropicalSoilBacteriaasSelf.pdf
http://eprints.utm.my/id/eprint/89626/
http://dx.doi.org/10.1088/1755-1315/220/1/012049
_version_ 1692991804977184768
score 13.211869

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