|
Impact of Power-On Duration on ChlorideMigration in Reinforced Reactive PowderConcrete with Recycled Aggregates, FlyAsh and Silica Fume |
|---|---|
| รหัสดีโอไอ | |
| Creator | Naphol Yoobanpot |
| Title | Impact of Power-On Duration on ChlorideMigration in Reinforced Reactive PowderConcrete with Recycled Aggregates, FlyAsh and Silica Fume |
| Contributor | Pannaphat Hengterm, Gritsada Sua-Iam, Natt Makul |
| Publisher | Research Administration Division |
| Publication Year | 2567 |
| Journal Title | Science & Technology Asia |
| Journal Vol. | 29 |
| Journal No. | 3 |
| Page no. | 178-196 |
| Keyword | Chloride migration? Fly ash, Reinforced reactive powder concrete, Silica fume |
| URL Website | https://www.tci-thaijo.org/index.php/SciTechAsia/index |
| Website title | ThaiJo2 |
| ISSN | 2586-9000 |
| Abstract | This study aimed to examine the chloride migration characteristics of Reinforced Re-active Powder Concrete (RRPC) that is not in a steady state. The RRPC was formulatedusing pozzolans and recycled concrete aggregate (RCA). The study was mostly looking athow the chloride migration coefficient changed when two important things happened: howlong the power was on and how much RCA was in the RRPC mixtures. Six separate cat-egories of RRPC mixtures were formulated, each containing different ratios of silica fume(SF) and fly ash (FA), as well as varying amounts of RCA substituting for the traditionalcoarse aggregate. The results of this study uncovered a significant trend in the chloride mi-gration coefficient as the duration of power-on increased from 12 to 36 h. The coefficientfirst showed an upward trend, then a downward trend. This trend indicates the existence ofa curative and sealing mechanism within the concrete structure, which gradually improvesits ability to resist the penetration of chloride over time. Adding RCA to reinforced reactivepowder concrete (RRPC) mixtures also slowed down the movement of chloride, and the ef-fectbecamemoreobviousastheRCAcontentincreased. ItalsofoundthattheeffectofRCAcontent on chloride resistance was more noticeable during shorter durations but became lesssignificant as the duration increased. |
