Experimental Assessment of Factors Affecting Transfer Length

2003 ◽  
Vol 100 (6) ◽  
2007 ◽  
Vol 17 (S1) ◽  
pp. S102-S121 ◽  
Author(s):  
Graham Robertson ◽  
Carlos A. Moreno ◽  
Julián Crujeiras ◽  
Barbara Wienecke ◽  
Patricia Gandini ◽  
...  

2022 ◽  
Vol 547 ◽  
pp. 151675
Author(s):  
Kristen A. Dahl ◽  
Andrew Fields ◽  
Alison Robertson ◽  
David S. Portnoy ◽  
Alex Grieme ◽  
...  

Oikos ◽  
1990 ◽  
Vol 59 (2) ◽  
pp. 183
Author(s):  
Robert T. M'Closkey ◽  
Christopher P. Szpak ◽  
Richard J. Deslippe

2014 ◽  
Vol 6 (1) ◽  
pp. 25-32 ◽  
Author(s):  
Aidas Jokūbaitis ◽  
Juozas Valivonis ◽  
Adomas Zubrus

Article briefly discusses the factors affecting bond between concrete and reinforcement of prestressed concrete member. Behavior of prestressed concrete member during release of reinforcement is discussed. Comparative analysis of equations, which describes relation between strand draw-in and transfer length, is presented. Article analyses distribution of loss of prestress at the anchorage zone of prestressed concrete member. Estimation of rational position of strands at the anchorage zone of flexural prestressed concrete member was performed. Influence of constant and linearly variable stress distribution at the end of the strand and member cross-section hight on the position of the reinforcement at the member crosssection is analysed. Straipsnyje trumpai aptariami įtemptųjų gelžbetoninių konstrukcijų sukibimą tarp betono ir armatūros lemiantys veiksniai. Aprašoma įtemptojo gelžbetoninio elemento elgsena atleidžiant armatūrą. Pateikiama kitų autorių eksperimentiniais tyrimais nustatytų priklausomybių tarp lynų praslydimo ir įtempių perdavimo ilgio lyginamoji analizė. Straipsnyje analizuojamas įtempių nuostolių pasiskirstymas įtemptojo gelžbetoninio elemento inkaravimo zonoje, apskaičiuota racionali įtemptojo lenkiamojo gelžbetoninio elemento lynų padėtis inkaravimo zonoje. Analizuojama, kokią įtaką lynų padėčiai elemento skerspjūvyje daro nuolatinis ir kintamas įtempių pasiskirstymas lynų galuose bei elemento skerspjūvio aukštis.


Author(s):  
F. A. Heckman ◽  
E. Redman ◽  
J.E. Connolly

In our initial publication on this subject1) we reported results demonstrating that contrast is the most important factor in producing the high image quality required for reliable image analysis. We also listed the factors which enhance contrast in order of the experimentally determined magnitude of their effect. The two most powerful factors affecting image contrast attainable with sheet film are beam intensity and KV. At that time we had only qualitative evidence for the ranking of enhancing factors. Later we carried out the densitometric measurements which led to the results outlined below.Meaningful evaluations of the cause-effect relationships among the considerable number of variables in preparing EM negatives depend on doing things in a systematic way, varying only one parameter at a time. Unless otherwise noted, we adhered to the following procedure evolved during our comprehensive study:Philips EM-300; 30μ objective aperature; magnification 7000- 12000X, exposure time 1 second, anti-contamination device operating.


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