Influence of the compressive strength of concrete on the temperature increase due to cyclic loading

Research output: Contribution to book/conference proceedings/anthology/reportConference contributionContributedpeer-review

Contributors

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.

Details

Original languageEnglish
Title of host publicationConcrete structures for resilient society
EditorsBin Zhao, Xilin Lu
Publisherfib. The International Federation for Structural Concrete
Pages710-717
Number of pages8
ISBN (print)9782940643042
Publication statusPublished - 2020
Peer-reviewedYes

Publication series

Seriesfib Symposium 2020
ISSN2617-4820

Conference

Titlefib Symposium 2020
SubtitleConcrete Structures for Resilient Society
Duration22 - 24 November 2020
Locationonline
CityShanghai
CountryChina

External IDs

ORCID /0000-0002-8976-6680/work/142236464
ORCID /0000-0002-7581-8072/work/142236855

Keywords

Keywords

  • Fatigue behaviour, Frequency, HPC, Temperature development, UHPC