Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
An experimental study on transfer length of prestressing strand in self-consolidating concrete
Highlights NCC beams had 15% longer transfer length compared to NSCC beams. HCC beams showed 30% longer transfer lengths than the HSCC beams. Statistical data analysis confirmed higher transfer lengths of the CC beams compared to the SCC beams.
Abstract Due to its economic advantages, the use of self-consolidating concrete (SCC) has increased rapidly in recent years. However, because SCC mixes typically have decreased amounts of coarse aggregate and high amounts of admixtures, industry members have expressed concerns that the bond of prestressing strand in SCC may be compromised. Therefore, the objective of this research program was to investigate the transfer lengths of prestressing strand in SCC. Transfer lengths of 12.5 mm diameter (0.5-in.), Grade 270 prestressing strand were evaluated using rectangular beams constructed from normal and high strength conventional concrete and SCC mixes. Strain readings over 56 days were used to calculate transfer lengths of beams. Results indicated that bond performance of SCC is superior to conventional concrete and that AASHTO and ACI equations for transfer length were generally conservative.
An experimental study on transfer length of prestressing strand in self-consolidating concrete
Highlights NCC beams had 15% longer transfer length compared to NSCC beams. HCC beams showed 30% longer transfer lengths than the HSCC beams. Statistical data analysis confirmed higher transfer lengths of the CC beams compared to the SCC beams.
Abstract Due to its economic advantages, the use of self-consolidating concrete (SCC) has increased rapidly in recent years. However, because SCC mixes typically have decreased amounts of coarse aggregate and high amounts of admixtures, industry members have expressed concerns that the bond of prestressing strand in SCC may be compromised. Therefore, the objective of this research program was to investigate the transfer lengths of prestressing strand in SCC. Transfer lengths of 12.5 mm diameter (0.5-in.), Grade 270 prestressing strand were evaluated using rectangular beams constructed from normal and high strength conventional concrete and SCC mixes. Strain readings over 56 days were used to calculate transfer lengths of beams. Results indicated that bond performance of SCC is superior to conventional concrete and that AASHTO and ACI equations for transfer length were generally conservative.
An experimental study on transfer length of prestressing strand in self-consolidating concrete
Arezoumandi, Mahdi (Autor:in) / Looney, Krista B. (Autor:in) / Volz, Jeffery S. (Autor:in)
Engineering Structures ; 208
30.01.2020
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Bond performance of prestressing strand in self-consolidating concrete
| Elsevier | 2019
Bond of prestressing strands in self-consolidating concrete
| British Library Online Contents | 2008
| British Library Conference Proceedings | 2005