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Residual strength of hybrid-fiber-reinforced high-strength concrete after exposure to high temperatures

Chen, Bing / Liu, Juanyu

Residual strengths of high-strength concrete (HSC) and hybrid-fiber- reinforced high-strength concrete (HFRHSC) after exposure to high temperatures were investigated in the paper. The results showed that normal HSC is prone to spalling after exposure to high temperatures, and its first spalling occurs when the temperature approaches 400 degree C. For HSC reinforced by high melting point fibers, the first spalling occurs when the temperature reaches to approximately 800 degree C, while there is no spalling during exposing to high temperatures for HSC reinforced by polypropylene (PP) fiber with a low melting point. Mixing high melting point fiber (i.e., carbon or steel fiber) with low melting point fiber (i.e., PP fiber) HSC greatly improves the properties of HSC after exposure to high temperatures.

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Residual strength of hybrid-fiber-reinforced high-strength concrete after exposure to high temperatures

Chen, Bing / Liu, Juanyu

Residual strengths of high-strength concrete (HSC) and hybrid-fiber- reinforced high-strength concrete (HFRHSC) after exposure to high temperatures were investigated in the paper. The results showed that normal HSC is prone to spalling after exposure to high temperatures, and its first spalling occurs when the temperature approaches 400 degree C. For HSC reinforced by high melting point fibers, the first spalling occurs when the temperature reaches to approximately 800 degree C, while there is no spalling during exposing to high temperatures for HSC reinforced by polypropylene (PP) fiber with a low melting point. Mixing high melting point fiber (i.e., carbon or steel fiber) with low melting point fiber (i.e., PP fiber) HSC greatly improves the properties of HSC after exposure to high temperatures.

Residual strength of hybrid-fiber-reinforced high-strength concrete after exposure to high temperatures

Chen, Bing / Liu, Juanyu

Residual strengths of high-strength concrete (HSC) and hybrid-fiber- reinforced high-strength concrete (HFRHSC) after exposure to high temperatures were investigated in the paper. The results showed that normal HSC is prone to spalling after exposure to high temperatures, and its first spalling occurs when the temperature approaches 400 degree C. For HSC reinforced by high melting point fibers, the first spalling occurs when the temperature reaches to approximately 800 degree C, while there is no spalling during exposing to high temperatures for HSC reinforced by polypropylene (PP) fiber with a low melting point. Mixing high melting point fiber (i.e., carbon or steel fiber) with low melting point fiber (i.e., PP fiber) HSC greatly improves the properties of HSC after exposure to high temperatures.

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Title:

Residual strength of hybrid-fiber-reinforced high-strength concrete after exposure to high temperatures

Contributors:

Chen, Bing (author) / Liu, Juanyu (author)

Published in:

Cement and Concrete Research ; 34 ; 1065-1069

Publication date:

2004

Size:

5 Seiten, 10 Quellen

ISSN:

DOI:

https://doi.org/10.1016/j.cemconres.2003.11.010

Type of media:

Article (Journal)

Type of material:

Print

Language:

English

Keywords:

mechanische Festigkeit , Hochtemperatur , Schmelzen , Polypropylen , Wärmespannung , Dampfdruck (Mechanik) , Mikrosilica , Hybridverbundwerkstoff , Hybridfaser , Hochleistungsbeton , Stahlbeton , faserverstärkter Beton , hochfester Werkstoff , Temperatureinfluss , Wärmebehandlung

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