The Bond Strength Behavior of Polymer-modified Mortars During a Wetting and Drying Process
| Autor: | Vanderley Moacyr John, Mercia Maria Semensato Bottura de Barros, Maurício M. Resende, Flávio Leal Maranhão |
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| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
bond strength
Materials science Serviceability (structure) Bond strength Mechanical Engineering Raw material Condensed Matter Physics tilling Mechanics of Materials visual_art TA401-492 visual_art.visual_art_medium General Materials Science adhesive mortar Wetting Ceramic Tile REVESTIMENTOS VERTICAIS Composite material Mortar Materials of engineering and construction. Mechanics of materials Water content moisture content |
| Zdroj: | Materials Research v.18 n.6 2015 Materials research (São Carlos. Online) Universidade Federal de São Carlos (UFSCAR) instacron:ABM ABC ABPOL Materials Research, Volume: 18, Issue: 6, Pages: 1354-1361, Published: 24 NOV 2015 Materials Research, Vol 18, Iss 6, Pp 1354-1361 (2015) Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP |
| Popis: | Polymer-modified mortars are highly popular for setting exterior tile systems and low-porosity ceramic tiles because they possess greater flexibility and higher bond strengths than conventional mortars which increases cladding serviceability. However, the long-term performance of this application is not completely understood and many pathologies has been reported. The negative influence of water saturation on polymer modified mortar is well documented and this paper investigates the influence that progressive water intake on bond strength by applying pull out tests on several different mortars. Four of those mortars were especially prepared with well known raw materials and concentrations, and three others were ready-made commercial products designed for setting ceramic tile on building façades. The tests were performed during twenty-five day drying period in laboratory conditions after specimens saturation for ten days of immersion in water. The results revealed that: (i) the ready-made commercial and the prepared mortars have similar behavior; (ii) their bond strengths are highly influenced by small increases in moisture content; (iii) moisture content higher than 10% is enough to reduce mortar bond strength by one-half; (iv)during the drying process bond strength increases continuously until reaching values similar to the initial ones. |
| Databáze: | OpenAIRE |
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