Experimental study on the mechanical properties and the microstructure of hybrid-fiber-reinforced concrete under an early stage

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F20%3A00511451" target="_blank" >RIV/68378297:_____/20:00511451 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1002/suco.201900262" target="_blank" >https://doi.org/10.1002/suco.201900262</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/suco.201900262" target="_blank" >10.1002/suco.201900262</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Experimental study on the mechanical properties and the microstructure of hybrid-fiber-reinforced concrete under an early stage

Popis výsledku v původním jazyce

Based on the fixed aspect ratio of 650 for carbon fiber (CF) in hybrid-fiberreinforced concrete (HFRC), this study investigated the effect of polypropylene fiber (PPF) and the aramid fiber (AF) aspect ratio on the mechanical properties of HFRC under the early stage. For this purpose, compressive, splitting tensile, and flexural tests were carried out to obtain the optimal hybridization parameters with respect to the aspect ratio of polypropylene fiber (PPF-AR) and aramid fiber (AF-AR) in HFRC. Additionally, the microstructure of HFRC was also examined by scanning electron microscope method to investigate the bond properties between fiber and a concrete matrix. It can be found from the results that the failure modes of overall tests are a ductile failure. The enhancement of tensile strength is attributed to PPF-AR, whereas AF-AR mainly tends to improve the performance in compressive and flexural strength. Meanwhile, the aspect ratio of fibers has little effect on the tensile-to-compressive-strength ratio (TC-R) or the flexural-to-compressive-strength ratio (FC-R) of earlystage HFRC.

Název v anglickém jazyce

Experimental study on the mechanical properties and the microstructure of hybrid-fiber-reinforced concrete under an early stage

Popis výsledku anglicky

Based on the fixed aspect ratio of 650 for carbon fiber (CF) in hybrid-fiberreinforced concrete (HFRC), this study investigated the effect of polypropylene fiber (PPF) and the aramid fiber (AF) aspect ratio on the mechanical properties of HFRC under the early stage. For this purpose, compressive, splitting tensile, and flexural tests were carried out to obtain the optimal hybridization parameters with respect to the aspect ratio of polypropylene fiber (PPF-AR) and aramid fiber (AF-AR) in HFRC. Additionally, the microstructure of HFRC was also examined by scanning electron microscope method to investigate the bond properties between fiber and a concrete matrix. It can be found from the results that the failure modes of overall tests are a ductile failure. The enhancement of tensile strength is attributed to PPF-AR, whereas AF-AR mainly tends to improve the performance in compressive and flexural strength. Meanwhile, the aspect ratio of fibers has little effect on the tensile-to-compressive-strength ratio (TC-R) or the flexural-to-compressive-strength ratio (FC-R) of earlystage HFRC.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20101 - Civil engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Structural Concrete

ISSN

1464-4177

e-ISSN

—

Svazek periodika

21

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

17

Strana od-do

1106-1122

Kód UT WoS článku

000497691400001

EID výsledku v databázi Scopus

2-s2.0-85075363625