Utilization of Recycled Aggregate Concrete for Marine Site Based on 7-Year Field Monitoring

Autor: Wichian Chalee, Tieng Cheewaket, Chai Jaturapitakkul
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: International Journal of Concrete Structures and Materials, Vol 15, Iss 1, Pp 1-11 (2021)
Druh dokumentu: article
ISSN: 1976-0485
2234-1315
DOI: 10.1186/s40069-021-00473-w
Popis: Abstract This research aimed to create value of construction and demolition waste to be able used as a recycled coarse aggregate (RCA) in durable concrete, based on 7-year field investigation in marine site. Fly ash was used to substitute Portland cement type I in RCA concrete varied from 0 to 50% by weight of binder with three W/B ratios and comparing to natural aggregate (NA) concrete. Cubical concrete specimens were cast having round steel bars embedded with various concrete coverings to evaluate the durability performances. After 28-day curing, the specimens were placed at a tidal zone in the gulf of Thailand and investigated both mechanical and durability performances at 7-year exposed period. Based on site monitoring, 15–25% fly ash RCA concrete with W/B ratio of 0.40 would be advantaged to resist destruction due to the marine attack when compared with NA concrete with the same water-to-binder ratio.
Databáze: Directory of Open Access Journals
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