Influence of The Segregation Phenomenon on Structural Efficiency of Lightweight Aggregate Concretes
| Autor: | Antonio José Tenza-Abril, Afonso Miguel Solak, Victoria E. García-Vera |
|---|---|
| Přispěvatelé: | Universidad de Alicante. Departamento de Ingeniería Civil, Tecnología de Materiales y Territorio (TECMATER) |
| Rok vydání: | 2020 |
| Předmět: |
Work (thermodynamics)
0211 other engineering and technologies Compaction Concrete segregation 02 engineering and technology lcsh:Technology 021105 building & construction General Materials Science lightweight aggregate concrete Resistencia a compresión Composite material Ingeniería de la Construcción lcsh:QC120-168.85 Lightweight aggregate concrete ANOVA Ensayos (propiedades o materiales) 3313.04 Material de Construcción 021001 nanoscience & nanotechnology compressive strength Resistencia mecánica Compressive strength 3312.12 Ensayo de Materiales Hormigón ligero estructural (HAL) 0210 nano-technology lcsh:TK1-9971 Durabilidad Materials science Material de construcción Compactación Article Segregación -material segregation index lcsh:Microscopy 3312.09 Resistencia de Materiales Aggregate (composite) lcsh:QH201-278.5 Áridos ligeros lcsh:T 3312.08 Propiedades de Los Materiales Durability Vibration Types of concrete Segregation index lcsh:TA1-2040 lcsh:Descriptive and experimental mechanics lcsh:Electrical engineering. Electronics. Nuclear engineering Mortar lcsh:Engineering (General). Civil engineering (General) 3305.33 Resistencia de Estructuras 3305.05 Tecnología del Hormigón |
| Zdroj: | RUA. Repositorio Institucional de la Universidad de Alicante Universidad de Alicante (UA) RIARTE Consejo General de la Arquitectura Técnica de España (CGATE) Materials Volume 13 Issue 24 Materials, Vol 13, Iss 5754, p 5754 (2020) |
| Popis: | Lightweight aggregate concretes (LWAC) are versatile and interesting materials for projects that require greater structural efficiency. Due to the difference that exists between the densities of the materials used in these types of concrete, during transport and mainly compaction, their aggregates tend to separate from the mortar matrix, floating towards the surface, a phenomenon called segregation. Segregation in LWAC can affect its durability properties, its density, and directly affect its structural efficiency. In this work, different concrete densities (1700 kg/m3 and 1900 kg/m3) manufactured with different dosages (two different lightweight aggregates) and compaction methods (one or two layers) were analyzed to verify the impact of segregation on its structural efficiency. For this purpose, the segregation index of the LWAC was obtained by means of the image analysis technique. In addition, to obtain their structural efficiency, the density and compressive strength were obtained at different heights of the tested specimens. The results show the vibration of the samples in two layers leads to a more efficient elimination of trapped air, a reduction in the risk of segregation, and better structural efficiency. This research was funded by the University of Alicante ((GRE13‐03) and (VIGROB‐256)). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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