Effect of Sporosarcina Pasteurii on the strength properties of compressed earth specimens
Microbial biodeposition of calcite induction for improving the performance of rammed earth is a research area that must be analysed in a representative environment. This analysis must consider the compaction force, particle size distribution and curing process as production variables. This paper inv...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Consejo Superior de Investigaciones Científicas
2018-03-01
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| Series: | Materiales de Construccion |
| Subjects: | |
| Online Access: | http://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/2204 |
| _version_ | 1818460417753612288 |
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| author | E. Bernat-Maso L. Gil C. Escrig J. Barbé P. Cortés |
| author_facet | E. Bernat-Maso L. Gil C. Escrig J. Barbé P. Cortés |
| author_sort | E. Bernat-Maso |
| collection | DOAJ |
| description | Microbial biodeposition of calcite induction for improving the performance of rammed earth is a research area that must be analysed in a representative environment. This analysis must consider the compaction force, particle size distribution and curing process as production variables. This paper investigates the effects of adding specific bacteria, Sporosarcina Pasteurii, into compressed earth cubes and the effect of production variables. Uniaxial compressive tests and direct shear tests have been conducted for 80 specimens. The results indicate that calcite precipitation interacts with the drying process of clay/silt resulting in reducing the compressive strength, the apparent cohesion and the friction angle. Finally, bacterial activity, which is more likely in samples cured in a high humidity environment, tends to reduce the dilatancy effect. |
| first_indexed | 2024-12-14T23:29:55Z |
| format | Article |
| id | doaj.art-d64dd01c70c541de81834db8cc165562 |
| institution | Directory Open Access Journal |
| issn | 0465-2746 1988-3226 |
| language | English |
| last_indexed | 2024-12-14T23:29:55Z |
| publishDate | 2018-03-01 |
| publisher | Consejo Superior de Investigaciones Científicas |
| record_format | Article |
| series | Materiales de Construccion |
| spelling | doaj.art-d64dd01c70c541de81834db8cc1655622022-12-21T22:43:43ZengConsejo Superior de Investigaciones CientíficasMateriales de Construccion0465-27461988-32262018-03-0168329e143e14310.3989/mc.2018.123162130Effect of Sporosarcina Pasteurii on the strength properties of compressed earth specimensE. Bernat-Maso0https://orcid.org/0000-0002-7080-0957L. Gil1https://orcid.org/0000-0002-2007-4846C. Escrig2https://orcid.org/0000-0002-2412-007XJ. Barbé3https://orcid.org/0000-0003-4408-013XP. Cortés4https://orcid.org/0000-0002-5924-0653Department of Strength of Materials and Engineering Structures. Technical University of CataloniaDepartment of Strength of Materials and Engineering Structures. Technical University of CataloniaDepartment of Strength of Materials and Engineering Structures. Technical University of CataloniaDepartment of Genetics and Microbiology. Universitat Autònoma de BarcelonaDepartment of Genetics and Microbiology. Universitat Autònoma de BarcelonaMicrobial biodeposition of calcite induction for improving the performance of rammed earth is a research area that must be analysed in a representative environment. This analysis must consider the compaction force, particle size distribution and curing process as production variables. This paper investigates the effects of adding specific bacteria, Sporosarcina Pasteurii, into compressed earth cubes and the effect of production variables. Uniaxial compressive tests and direct shear tests have been conducted for 80 specimens. The results indicate that calcite precipitation interacts with the drying process of clay/silt resulting in reducing the compressive strength, the apparent cohesion and the friction angle. Finally, bacterial activity, which is more likely in samples cured in a high humidity environment, tends to reduce the dilatancy effect.http://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/2204calcium carbonateorganic materialcuringcompressive strengthcharacterisation |
| spellingShingle | E. Bernat-Maso L. Gil C. Escrig J. Barbé P. Cortés Effect of Sporosarcina Pasteurii on the strength properties of compressed earth specimens Materiales de Construccion calcium carbonate organic material curing compressive strength characterisation |
| title | Effect of Sporosarcina Pasteurii on the strength properties of compressed earth specimens |
| title_full | Effect of Sporosarcina Pasteurii on the strength properties of compressed earth specimens |
| title_fullStr | Effect of Sporosarcina Pasteurii on the strength properties of compressed earth specimens |
| title_full_unstemmed | Effect of Sporosarcina Pasteurii on the strength properties of compressed earth specimens |
| title_short | Effect of Sporosarcina Pasteurii on the strength properties of compressed earth specimens |
| title_sort | effect of sporosarcina pasteurii on the strength properties of compressed earth specimens |
| topic | calcium carbonate organic material curing compressive strength characterisation |
| url | http://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/2204 |
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