This paper details and discusses the results of an experimental campaign into the uniaxial tensile creep behavior of a polypropylene fiber reinforced concrete (PFRC). In total, 16 FRC prisms are cast and tested according to the European Standard EN 14651. Cylindrical cores, taken from the prisms, are notched and are then used to identify the uniaxial tensile behavior of the FRC. The notched cores are also precracked and subjected to creep loading to study the time-dependent crack width growth at two different load ratios, 30 and 45% of the residual capacity. The results show that the load ratio has an important influence on the long-term tensile behavior of cracked FRC. For the samples subjected to 45%, the crack width exceeds the precrack width within hours, while the average crack width for the 30% samples remained below the initial crack width after 180 days under load. Based on the creep rate and crack width recovery upon unloading, it is shown that the 45% loaded samples exhibited plastic deformations, attributed to the onset of plasticity in the fibers. Furthermore, in terms of structural design, it is found that the residual post-creep capacity of the 30% samples was similar to that of undamaged cores, but significant differences were found for the higher loaded samples. For these samples, the average tensile capacity of the post-creep cores is 40% lower than that of the undamaged specimens. A comparison with steel FRC yielded that the time-dependent crack widening is similar, contrary to results in literature.
Materials and Structures – Springer Journals
Published: Jan 5, 2018
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.
Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.
All the latest content is available, no embargo periods.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera