دانلود رایگان مقاله لاتین ملات پوشش با فعالیت بیوسیدال از سایت الزویر
عنوان فارسی مقاله:
توسعه و اعتبار تجربی ملات پوشش با فعالیت بیوسیدال
عنوان انگلیسی مقاله:
Development and experimental validation of an overlay mortar with biocide activity
سال انتشار : 2016
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مقدمه انگلیسی مقاله:
1. Introduction
Concrete is one of the most used construction materials because it has high structural performance, long durability, and a relatively low cost. The surface of concrete is resistant to corrosion and provides a physically and chemically stable environment that can be exposed to potable water or wastewater; for this reason, it is commonly used in pipes and canals [7]. In these structures, microorganisms can easily colonise concrete and cause biodeterioration of the material. The main problem in irrigation and hydroelectric canals is the growth of algae and cyanobacteria among other microorganisms on the canal walls. This biological growth creates many problems that are reflected in increased maintenance costs. The effective section of the canal is decreased and the roughness coefficient of the canal wall is increased, which diminishes the water flow [14]. Some studies reflect a decrease of 10% in the hydroelectric generation capacity because of algal growth [8,19]. Furthermore, it is worth noting that presence of some types of fungi can have detrimental effects in concrete walls as well as can affect production of certain cereals, as Fusarium [12]. Moreover, the detachment of filamentous organisms such as green algae carries the risk of clogging and plugging filters. Both the growth of these organisms on concrete and the required cleaning activities to remove them from the walls cause erosion to the surface of the concrete. This intensifies the porosity and roughness of the material and makes it more vulnerable to re-colonisation. Algal growth is usually preceded by concrete biofouling. This phenomenon is often grouped in the literature into several stages that include an initial accumulation of adsorbed organics, the settlement and growth of pioneering bacteria creating a biofilm matrix and the subsequent succession of micro and macrofoulers [9]. Usually, bacteria play a dominant role in the formation of this biofilm and further colonisation of larger microorganisms [22]. Several antimicrobial treatments have been used in concrete and cement-based materials. Conventional studied procedures involve the usage of water repellents, biocides, or both. Water repellents slow the adsorption of water by reducing the surface energy and capillary forces of the concrete, thus decreasing the bioreceptivity of the material. Biocides focus on decreasing biological activity. While the use of hydrophobic compounds alone was shown to be insufficient in inhibiting microbial growth, the application of a combination of both treatments has been reported as effective [10,20]. The order of application of the different products influences the efficiency of the final treatment; this must be considered to avoid negative effects [15e17].
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کلمات کلیدی:
BISIGODOS www.bisigodos.eu/tw_service.php?pagina=5&opcion=7 Development and experimental validation of an overlay mortar with biocide ... of structure and anticancer activity in vitro of polysaccharides from brown algae ... Publicacions - Portal de la Recerca de les Universitats de Catalunya portalrecerca.csuc.cat/orcid/0000-0001-5542.../publications.html?... Translate this page 1-nov-2016, Development and experimental validation of an overlay mortar with biocide activity, Vaquero, J.M., Cugat, V., Segura, I., Calvo, M., Aguado, A., ... Cement and Concrete Composites - 文献云阅读 - 科学之家 www.kexuehome.com/sci/detail/sci_1911.html Development and experimental validation of an overlay mortar with biocide activity. Biodeterioration of concrete by microorganism colonisation may be a ... Cement & concrete composites - Engineering - Terkko Navigator https://www.terkko.helsinki.fi/cement-concrete-composites Micro-mechanical properties of calcium sulfoaluminate cement and the ... Development and experimental validation of an overlay mortar with biocide activity. [PDF]Efficacy testing of biocidal products - overview of available tests https://www.kemi.se/.../efficacy-testing-of-biocidal-products-overview-of-available-te... Denmark, disinfectants were validated on data from a European suspension test or similar. Nordic .... tests, corresponding to testing of innate activity, simulated use and "field" testing (under .... based on employing mortar treated with the product and then exposed to challenge by ...... Agar Overlay Screen. 9. Designed to ... [PDF]Guidance on the Biocidal Products Regulation - ECHA - Europa.eu https://echa.europa.eu/documents/.../90a356c9-fa42-4722-55f1-88d8e970b73c Product 10 - 40 - In addition to the BPR guidance, the Biocidal Products Directive (BPD) guidance ...... Algaecidal activity The capability of a product or active substance to produce a ..... Laboratory studies are performed to validate the efficacy in a ...... the growth of dry rot through the treated mortar when exposed to the fungus. Papers - dissemin dissem.in/search/?page=4&authors=a.+maria Development and experimental validation of an overlay mortar with biocide activity · Download hdl.handle.net. Sara Basart Alpuente, Lluis Vendrell Miguel, José ... [PDF]for the Agilent 1290 Infinity LC system www.agilent.com/cs/library/applications/AG%20Pharma%20Comp_loRes.pdf Aug 1, 2011 - Fast Separation of Seven Biocides ... Highly Sensitive UV Analysis for Cleaning Validation – Part 1 .... Overlay of original Agilent 1100 Series LC System chromatogram with the ...... activity affects peak shape dramatically through secondary ...... mortar and pestle and transferring the entire amount (about.
