Characteristics of Strength Development of Ultra-High Performance Concrete according to Curing Condition
| Autor: | Se Jin) 전세진(Jeon, Jeong Rae) 조정래(Cho, Young Jin) 김영진(Kim, Jong Sup) 박종섭(Park |
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| Rok vydání: | 2013 |
| Předmět: |
Materials science
Moisture business.industry Materials Science (miscellaneous) Building and Construction Structural engineering Curing time Compressive strength Mechanics of Materials Precast concrete Ultra high performance Composite material business Curing (chemistry) Civil and Structural Engineering Delay time |
| Zdroj: | Journal of the Korea Concrete Institute. 25:295-304 |
| ISSN: | 1229-5515 |
| DOI: | 10.4334/jkci.2013.25.3.295 |
| Popis: | Ultra-High Performance Concrete (UHPC) has recently been one of the most active research fields in Korea as well as in foreign countries, because it can contribute to a longer life and economic efficiency of structures. Although precast-type UHPC fabricated in a factory is preferable in terms of quality control and reduction of construction period, there exist, even in the precast structure, some parts that need to be cast in-place such as the joints between precast segments. In the cast-in-place UHPC, however, it is probable that an optimum curing condition can hardly be realized in contrast to the factory production. In this study, therefore, the trend of compressive strength development of UHPC was experimentally investigated by assuming various inferior curing conditions that may be anticipated at a construction site. Concrete specimens were fabricated and cured under different conditions with the variables such as curing temperature, delay time before the initiation of curing, duration of curing time and moisture condition. The strengths were compared with those of the specimens cured by standard high temperature steam. Through the analysis of the test results, some minimum requirements for curing have been proposed that are required when the UHPC is cast in-place. It is expected, through this study, that practical use of UHPC in construction sites can be increased. |
| Databáze: | OpenAIRE |
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