Influence of the compressive strength of concrete on the temperature increase due to cyclic loading
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Beitragende
Abstract
The development in the building industry is moving towards slimmer, higher and more resource-saving
constructions. These goals require new demands on material efficiency. In reinforced concrete
construction, high performance (HPC) and ultra-high performance concretes (UHPC) were developed
for these purposes. Components with high slenderness in applications with frequently changing load
situations, especially in the area of wide-span bridges and wind turbines, must not only withstand high
static loads, but also high fatigue loads. But the fatigue behaviour of HPC and UHPC is still under
research. Therefore, tests were carried out on cylinders to determine the fatigue strength. The high
number of required load changes is often achieved with high frequencies. In previous investigations
with high performance concretes, heating up of specimens was observed. We assume that this heating
has a significant influence on the fatigue strength of such (ultra-)high performance concretes. The aim
is to find out the parameters that determine the temperature increase. After investigations on the
influence of frequency, the maximum stress level and the maximum aggregate size, the influence of the
concrete’s compressive strength will be presented in this paper. Using a normal strength concrete (NC),
a HPC and an UHPC, it should be determined to what extent the various concrete strengths are susceptible
to heating. In addition, the influence of minimum stress level is investigated with two steps.
constructions. These goals require new demands on material efficiency. In reinforced concrete
construction, high performance (HPC) and ultra-high performance concretes (UHPC) were developed
for these purposes. Components with high slenderness in applications with frequently changing load
situations, especially in the area of wide-span bridges and wind turbines, must not only withstand high
static loads, but also high fatigue loads. But the fatigue behaviour of HPC and UHPC is still under
research. Therefore, tests were carried out on cylinders to determine the fatigue strength. The high
number of required load changes is often achieved with high frequencies. In previous investigations
with high performance concretes, heating up of specimens was observed. We assume that this heating
has a significant influence on the fatigue strength of such (ultra-)high performance concretes. The aim
is to find out the parameters that determine the temperature increase. After investigations on the
influence of frequency, the maximum stress level and the maximum aggregate size, the influence of the
concrete’s compressive strength will be presented in this paper. Using a normal strength concrete (NC),
a HPC and an UHPC, it should be determined to what extent the various concrete strengths are susceptible
to heating. In addition, the influence of minimum stress level is investigated with two steps.
Details
Originalsprache | Englisch |
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Titel | Concrete structures for resilient society |
Redakteure/-innen | Bin Zhao, Xilin Lu |
Herausgeber (Verlag) | fib. The International Federation for Structural Concrete |
Seiten | 710-717 |
Seitenumfang | 8 |
ISBN (Print) | 9782940643042 |
Publikationsstatus | Veröffentlicht - 2020 |
Peer-Review-Status | Ja |
Publikationsreihe
Reihe | fib Symposium 2020 |
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ISSN | 2617-4820 |
Konferenz
Titel | fib Symposium 2020 |
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Untertitel | Concrete Structures for Resilient Society |
Dauer | 22 - 24 November 2020 |
Ort | online |
Stadt | Shanghai |
Land | China |
Externe IDs
ORCID | /0000-0002-8976-6680/work/142236464 |
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ORCID | /0000-0002-7581-8072/work/142236855 |
Schlagworte
ASJC Scopus Sachgebiete
Schlagwörter
- Fatigue behaviour, Frequency, HPC, Temperature development, UHPC