Number of the records: 1
Analysis of the mechanical and fracture behavior of heated ultra-high-performance fiber-reinforced concrete by X-ray computed tomography
- 1.
SYSNO ASEP 0509687 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Analysis of the mechanical and fracture behavior of heated ultra-high-performance fiber-reinforced concrete by X-ray computed tomography Author(s) Ríos, J. D. (ES)
Cifuentes, H. (ES)
Leiva, C. (ES)
Seitl, Stanislav (UFM-A) RID, ORCIDNumber of authors 4 Source Title Cement and Concrete Research. - : Elsevier - ISSN 0008-8846
Roč. 119, MAY (2019), s. 77-88Number of pages 12 s. Language eng - English Country GB - United Kingdom Keywords high-strength concrete ; 3-point bend tests ; steel fiber ; autogenous shrinkage ; compressive strength ; cement paste ; energy ; size ; temperature ; porosity ; Ultra-high performance concrete ; X-ray computed tomography ; Steel fibers ; High temperature ; Thermal effects ; Fracture Subject RIV JN - Civil Engineering OECD category Civil engineering R&D Projects GA16-18702S GA ČR - Czech Science Foundation (CSF) Method of publishing Limited access Institutional support UFM-A - RVO:68081723 UT WOS 000464482200008 EID SCOPUS 85062637388 DOI 10.1016/j.cemconres.2019.02.015 Annotation This work analyzes the effects of temperature (300 degrees C) on mechanical and fracture behavior of an ultra-high-performance steel-fiber-reinforced concrete. The deterioration of the pore structure due to thermal damage of the fiber-reinforced concrete and its un-reinforced matrix was analyzed by X-ray computed tomography. Complementarily, a thermogravimetric analysis was performed to relate the observed phase changes, due to dehydration and decomposition, with the deterioration of pore structure. Additionally, an analysis of their mechanical and fracture properties was also done at room temperature and 300 degrees C. Finally, a connection between the damage within the concrete matrix and its corresponding mechanical behavior was established. From the results, it has been ascertained that the propagation of thermal damage within the matrix affects the mechanical and fracture behavior in different ways depending on the pore-size. The presence of fibers modifies the pore structure and consequently the evolution of the thermal damage in the ultra-high-performance concrete, inferring its mechanical and fracture behavior. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2020 Electronic address https://www.sciencedirect.com/science/article/pii/S000888461831024X?via%3Dihub
Number of the records: 1