Introducing a New Quantitative Evaluation Method for Segregation of Normal Concrete
| Autor: | Dongyeop Han, In-Deok Han |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Slump flow
Quantitative method Structural material Slump Systems of building construction. Including fireproof construction concrete construction TH1000-1725 Minimum distance Flow (psychology) Ocean Engineering Concrete segregation Segregation evaluation Evaluation methods Solid mechanics Project site Environmental science Geotechnical engineering Civil and Structural Engineering |
| Zdroj: | International Journal of Concrete Structures and Materials, Vol 15, Iss 1, Pp 1-15 (2021) |
| ISSN: | 2234-1315 1976-0485 |
| Popis: | The aim of this research is to provide a quantitative method for evaluating concrete segregation. Because of various conditions of concrete materials, mix proportions, and delivery, concrete can be segregated. The acquisition inspection executed in construction field for supplied ready-mixed concrete is an important quality control process for concrete. Among the inspections conducted at the project site, segregation of concrete mixture should be evaluated before placing the concrete mixture, currently a qualitative inspection on concrete segregation was conducted. For a normal concrete mixture with slumping behavior, shear slump or collapse slump often occur as an indication of segregation. The suggested evaluation index of segregation for normal concrete (EISN) was induced from the shape of the concrete slumping: relation between the maximum distance of flow and the minimum distance of flow. To evaluate the feasibility of EISN, two different concrete mixture conditions were tested. The recommended EISN parameter of segregation is 1.09 using the three grades of concrete quality. This new quantitative method of evaluating segregation of the concrete mixture is expected to contribute to a more efficient quality control in concrete construction. |
| Databáze: | OpenAIRE |
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