Causes of Early-Age Thermal Cracking of Concrete Foundation Slabs and their Reinforcement to Control the Cracking
| Autor: | Robert Sonnenschein, Natalia Gažovičová, Juraj Bilčík |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Foundation slab 0211 other engineering and technologies Foundation (engineering) 020101 civil engineering 02 engineering and technology Reinforcement 0201 civil engineering Early-age cracking Cracking Restrained contractions lcsh:TA1-2040 021105 building & construction Watertight concrete Geotechnical engineering lcsh:Engineering (General). Civil engineering (General) |
| Zdroj: | Slovak Journal of Civil Engineering, Vol 25, Iss 3, Pp 8-14 (2017) |
| ISSN: | 1338-3973 1210-3896 |
| Popis: | This paper focuses on the causes and consequences of early-age cracking of mass concrete foundation slabs due to restrained volume changes. Considering the importance of water leaking through cracks in terms of the serviceability, durability and environmental impact of watertight concrete structures, emphasis is placed on the effect of temperature loads on foundation slabs. Foundation slabs are usually restrained to some degree externally or internally. To evaluate the effect of external restraints on foundation slabs, friction and interaction models are introduced. The reinforcement of concrete cannot prevent the initiation of cracking, but when cracking has occurred, it may act to reduce the spacing and width of cracks. According to EN 1992-1-1, results of calculating crack widths with local variations included in National Annexes (NAs) vary considerably. A comparison of the required reinforcement areas according to different NAs is presented. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|