Modifying Mechanical Strength and Capillary Porosity of Portland Cement-Based Mortar Using a Biosurfactant from Pseudomonas fluorescens
We characterized the effects of a biosurfactant derived from Pseudomonas fluorescens on slump loss, mechanical strength, capillary porosity, and bacterial colonization inside Portland cement-based mortar samples. Standard tests were used to evaluate the utility of this biosurfactant as an admixture....
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2020/2948731 |
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| author | Huan He Nicolas Serres Thierry Meylheuc Justin T. Wynns Françoise Feugeas |
| author_facet | Huan He Nicolas Serres Thierry Meylheuc Justin T. Wynns Françoise Feugeas |
| author_sort | Huan He |
| collection | DOAJ |
| description | We characterized the effects of a biosurfactant derived from Pseudomonas fluorescens on slump loss, mechanical strength, capillary porosity, and bacterial colonization inside Portland cement-based mortar samples. Standard tests were used to evaluate the utility of this biosurfactant as an admixture. The addition of 1.5% biosurfactant increased the plasticity and improved the workability of fresh samples. Although compressive and flexural strengths of mortars with biosurfactant were lower than those of mortars without biosurfactant after a short curing period (28 days), the addition of biosurfactant increased the compressive strength of mortar after a long curing period (180 days), with 1% biosurfactant having the highest value. After 180 days, mortar with biosurfactant had significantly lower capillary absorption coefficient A values (P<0.05) than mortar without biosurfactant. Furthermore, the addition of biosurfactant reduced the relative abundance of the mortar-deteriorating bacterial genus Pseudomonas (phylum Proteobacteria). |
| format | Article |
| id | doaj-art-9cd7dc4a12bf4398848dcedc2a943f36 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
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| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-9cd7dc4a12bf4398848dcedc2a943f362025-02-03T06:05:14ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422020-01-01202010.1155/2020/29487312948731Modifying Mechanical Strength and Capillary Porosity of Portland Cement-Based Mortar Using a Biosurfactant from Pseudomonas fluorescensHuan He0Nicolas Serres1Thierry Meylheuc2Justin T. Wynns3Françoise Feugeas4ICube, INSA de Strasbourg, CNRS, 24 Boulevard de la Victoire, 67084 Strasbourg Cedex, FranceICube, INSA de Strasbourg, CNRS, 24 Boulevard de la Victoire, 67084 Strasbourg Cedex, FranceINRA, B2HM 25 Av de la République, 91300 Massy, FranceNatural History Museum of Denmark, Øster Farimagsgade 5 2. sal rum 7.2.40b, DK-1353 Copenhagen, DenmarkICube, INSA de Strasbourg, CNRS, 24 Boulevard de la Victoire, 67084 Strasbourg Cedex, FranceWe characterized the effects of a biosurfactant derived from Pseudomonas fluorescens on slump loss, mechanical strength, capillary porosity, and bacterial colonization inside Portland cement-based mortar samples. Standard tests were used to evaluate the utility of this biosurfactant as an admixture. The addition of 1.5% biosurfactant increased the plasticity and improved the workability of fresh samples. Although compressive and flexural strengths of mortars with biosurfactant were lower than those of mortars without biosurfactant after a short curing period (28 days), the addition of biosurfactant increased the compressive strength of mortar after a long curing period (180 days), with 1% biosurfactant having the highest value. After 180 days, mortar with biosurfactant had significantly lower capillary absorption coefficient A values (P<0.05) than mortar without biosurfactant. Furthermore, the addition of biosurfactant reduced the relative abundance of the mortar-deteriorating bacterial genus Pseudomonas (phylum Proteobacteria).http://dx.doi.org/10.1155/2020/2948731 |
| spellingShingle | Huan He Nicolas Serres Thierry Meylheuc Justin T. Wynns Françoise Feugeas Modifying Mechanical Strength and Capillary Porosity of Portland Cement-Based Mortar Using a Biosurfactant from Pseudomonas fluorescens Advances in Materials Science and Engineering |
| title | Modifying Mechanical Strength and Capillary Porosity of Portland Cement-Based Mortar Using a Biosurfactant from Pseudomonas fluorescens |
| title_full | Modifying Mechanical Strength and Capillary Porosity of Portland Cement-Based Mortar Using a Biosurfactant from Pseudomonas fluorescens |
| title_fullStr | Modifying Mechanical Strength and Capillary Porosity of Portland Cement-Based Mortar Using a Biosurfactant from Pseudomonas fluorescens |
| title_full_unstemmed | Modifying Mechanical Strength and Capillary Porosity of Portland Cement-Based Mortar Using a Biosurfactant from Pseudomonas fluorescens |
| title_short | Modifying Mechanical Strength and Capillary Porosity of Portland Cement-Based Mortar Using a Biosurfactant from Pseudomonas fluorescens |
| title_sort | modifying mechanical strength and capillary porosity of portland cement based mortar using a biosurfactant from pseudomonas fluorescens |
| url | http://dx.doi.org/10.1155/2020/2948731 |
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