Influence of the age of epoxy dispersion on the effectiveness of protection of concrete surfaces
The scope of this paper is to test stability and mechanical and chemical properties of a modern freshly mixed epoxy dispersion, and as a variant, of a dispersion which is two years old. During ageing, the dispersion particles probably agglomerate, which is tested by laser diffraction and by sediment...
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| Format: | Article |
| Language: | English |
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Vilnius Gediminas Technical University
2012-06-01
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| Series: | Engineering Structures and Technologies |
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| Online Access: | https://journals.vgtu.lt/index.php/EST/article/view/4702 |
| _version_ | 1818878513542856704 |
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| author | Michal Stehlík |
| author_facet | Michal Stehlík |
| author_sort | Michal Stehlík |
| collection | DOAJ |
| description | The scope of this paper is to test stability and mechanical and chemical properties of a modern freshly mixed epoxy dispersion, and as a variant, of a dispersion which is two years old. During ageing, the dispersion particles probably agglomerate, which is tested by laser diffraction and by sedimentation in a cylinder. Physical-mechanical tests assess the appearance, drying speed and mechanical properties of the film. Chemical tests focus on assessing the resistance of films of dispersions of different ages to common chemicals and to chemical defrosting agents. It is possible to say that two years of dispersion storage lead to a considerable increase in the diameter of a certain number of dispersion particles with the subsequent effect of increasing the sedimentation speed. The hardened film of a two-year old dispersion dries faster, has a rougher surface, is softer, but on the other hand, is less elastic and its adhesive capacity to the substrate is worse. Its chemical resistance is decreased but its defrosting agent resistance remains good. Due to the two-year storage of the epoxy dispersion, most of the monitored parameters decrease, nevertheless, certain protection of concrete structures by a hardened film of such epoxy dispersions is possible. |
| first_indexed | 2024-12-19T14:15:23Z |
| format | Article |
| id | doaj.art-e5d5903464a1468c98f92ee06fee9d73 |
| institution | Directory Open Access Journal |
| issn | 2029-882X 2029-8838 |
| language | English |
| last_indexed | 2024-12-19T14:15:23Z |
| publishDate | 2012-06-01 |
| publisher | Vilnius Gediminas Technical University |
| record_format | Article |
| series | Engineering Structures and Technologies |
| spelling | doaj.art-e5d5903464a1468c98f92ee06fee9d732022-12-21T20:18:00ZengVilnius Gediminas Technical UniversityEngineering Structures and Technologies2029-882X2029-88382012-06-014210.3846/2029882X.2012.697538Influence of the age of epoxy dispersion on the effectiveness of protection of concrete surfacesMichal Stehlík0Department of Building Testing, Faculty of Civil Engineering, TU of Brno, Veveří 95, 602 00 Brno, Czech RepublicThe scope of this paper is to test stability and mechanical and chemical properties of a modern freshly mixed epoxy dispersion, and as a variant, of a dispersion which is two years old. During ageing, the dispersion particles probably agglomerate, which is tested by laser diffraction and by sedimentation in a cylinder. Physical-mechanical tests assess the appearance, drying speed and mechanical properties of the film. Chemical tests focus on assessing the resistance of films of dispersions of different ages to common chemicals and to chemical defrosting agents. It is possible to say that two years of dispersion storage lead to a considerable increase in the diameter of a certain number of dispersion particles with the subsequent effect of increasing the sedimentation speed. The hardened film of a two-year old dispersion dries faster, has a rougher surface, is softer, but on the other hand, is less elastic and its adhesive capacity to the substrate is worse. Its chemical resistance is decreased but its defrosting agent resistance remains good. Due to the two-year storage of the epoxy dispersion, most of the monitored parameters decrease, nevertheless, certain protection of concrete structures by a hardened film of such epoxy dispersions is possible.https://journals.vgtu.lt/index.php/EST/article/view/4702epoxy dispersionsize distributionmechanical stabilitychemical stabilityprotection of concrete |
| spellingShingle | Michal Stehlík Influence of the age of epoxy dispersion on the effectiveness of protection of concrete surfaces Engineering Structures and Technologies epoxy dispersion size distribution mechanical stability chemical stability protection of concrete |
| title | Influence of the age of epoxy dispersion on the effectiveness of protection of concrete surfaces |
| title_full | Influence of the age of epoxy dispersion on the effectiveness of protection of concrete surfaces |
| title_fullStr | Influence of the age of epoxy dispersion on the effectiveness of protection of concrete surfaces |
| title_full_unstemmed | Influence of the age of epoxy dispersion on the effectiveness of protection of concrete surfaces |
| title_short | Influence of the age of epoxy dispersion on the effectiveness of protection of concrete surfaces |
| title_sort | influence of the age of epoxy dispersion on the effectiveness of protection of concrete surfaces |
| topic | epoxy dispersion size distribution mechanical stability chemical stability protection of concrete |
| url | https://journals.vgtu.lt/index.php/EST/article/view/4702 |
| work_keys_str_mv | AT michalstehlik influenceoftheageofepoxydispersionontheeffectivenessofprotectionofconcretesurfaces |