Early evaluation of cover concrete quality utilizing water intentional spray tests
| Autor: | Sohei Nishio, May Huu Nguyen, Yuya Kai, Kenichiro Nakarai |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Cement
0211 other engineering and technologies 020101 civil engineering 02 engineering and technology Building and Construction Durability 0201 civil engineering Highly sensitive Air permeability specific surface 021105 building & construction Environmental science General Materials Science Geotechnical engineering Civil and Structural Engineering |
| Zdroj: | Construction and Building Materials. 231:117144 |
| ISSN: | 0950-0618 |
| DOI: | 10.1016/j.conbuildmat.2019.117144 |
| Popis: | This study validated the effectiveness of a new, rapid, and cost-effective method to nondestructively evaluate the quality of early-age cover concrete using the water intentional spraying test (WIST). The WIST-measured water absorptivity at various ages, including promptly after demolding, was correlated with measured coefficient of air permeability, kT, (using a Torrent tester) at the age of three months as a robust durability indicator on 13 specimens produced using different cement types, curing periods, and water-to-binder ratios. The results indicated that WIST was highly sensitive in detecting poor- and normal-quality concrete on the 1st and 7th day, respectively, following demolding. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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