Exposing Sustainable Mortars with Nanosilica, Zinc Stearate, and Ethyl Silicate Coating to Sulfuric Acid Attack
| Autor: | Antonio José Tenza-Abril, Victoria E. García-Vera, Marcos Lanzón, José Miguel Saval |
|---|---|
| Přispěvatelé: | Universidad de Alicante. Departamento de Ingeniería Civil, Tecnología de Materiales y Territorio (TECMATER), Universidad de Alicante |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Curing (food preservation)
Absorption of water Materials science Sulfate exposure lcsh:TJ807-830 Geography Planning and Development Sulfuric acid attack lcsh:Renewable energy sources 0211 other engineering and technologies 02 engineering and technology ethyl silicate Management Monitoring Policy and Law engineering.material Durability chemistry.chemical_compound Coating Zinc stearate 3305 Tecnología de la Construcción zinc stearate 021105 building & construction Nanosilica Ingeniería de la Construcción Composite material sulfuric acid attack lcsh:Environmental sciences lcsh:GE1-350 Ethyl silicate Renewable Energy Sustainability and the Environment lcsh:Environmental effects of industries and plants Sulfuric acid nanosilica 021001 nanoscience & nanotechnology 3312 Tecnología de Materiales sulfate exposure Construcciones Arquitectónicas lcsh:TD194-195 Compressive strength chemistry engineering durability Cementitious Mortar 0210 nano-technology |
| Zdroj: | Sustainability Volume 10 Issue 10 Sustainability, Vol 10, Iss 10, p 3769 (2018) RUA. Repositorio Institucional de la Universidad de Alicante Universidad de Alicante (UA) Repositorio Digital de la Universidad Politécnica de Cartagena Fundación Universitaria San Pablo CEU (FUSPCEU) |
| ISSN: | 2071-1050 |
| DOI: | 10.3390/su10103769 |
| Popis: | Obtaining durable materials that lengthen the service life of constructions and thereby contribute to sustainability requires research into products that improve the durability of cementitious materials under aggressive conditions. This paper studies the effects of sulfuric acid exposure on four mortar types (control mortar, mortar with nanosilica, mortar with zinc stearate, and mortar with an ethyl silicate coating), and evaluates which of them have better performance against the acid attack. After 28 days of curing, the samples were exposed to a sulfuric acid attack by immersing them in a 3% w/w of H2SO4 solution. Physical changes (mass loss, ultrasonic pulse velocity, open porosity, and water absorption), and mechanical changes (compressive strength) were determined after the sulfuric acid exposure. A scanning electron microscope (SEM) was used to characterize the morphology of the surface mortars after the exposure. The control mortar had the highest compressive strength after the acid attack, although of the four types, the zinc stearate mortar showed the lowest percentage of strength loss. The zinc stearate mortar had the lowest mass loss after the acid exposure moreover, it had the lowest capillary water absorption coefficient (demonstrating its hydrophobic effect) both in a non-aggressive environment and acid attack. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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