Table 7 Comparison of experiments and standards for ultimate stress increment of unbonded tendons.
From: Flexural Behavior of Post-tensioned Lightweight Concrete Continuous One-Way Slabs
Specimen | Experimental | \( {{\left( {\Delta f_{ps} } \right)_{exp } } \mathord{\left/ {\vphantom {{\left( {\Delta f_{ps} } \right)_{\exp } } {\left( {\Delta f_{ps} } \right)_{pre} }}} \right. \kern-0pt} {\left( {\Delta f_{ps} } \right)_{pre} }} \) | |||
|---|---|---|---|---|---|
f ps (MPa) | Δf ps (MPa) | ACI | AASHTO | CAN3 | |
S-L/d p  = 25 | 1613 | 358 | 1.38 | 1.14 | 0.66 |
S-L/d p  = 35 | 1760 | 505 | 3.79 | 2.28 | 1.32 |
S-L/d p  = 45 | 1669 | 430 | 3.22 | 2.45 | 1.42 |
S-PPR-0.5 | 1540 | 285 | 2.14 | 1.58 | 0.92 |
S-PPR-1.0 | 1669 | 430 | 3.22 | 2.45 | 1.42 |
S-PPR-1.5 | 1655 | 400 | 2.99 | 2.34 | 1.34 |