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A platform for research: civil engineering, architecture and urbanism
Thermal and mechanical properties of high-performance fiber-reinforced cementitious composites after exposure to high temperatures
https://orcid.org/0000-0002-2766-2077
HighlightsThermal properties of HPFRCCs after exposure to high temperatures.Mechanical properties of HPFRCCs after exposure to high temperatures.Effects of mix proportions on thermal properties of HPFRCCs.Effects of mix proportions on mechanical properties of HPFRCCs.
AbstractThis paper investigates residual thermal and mechanical properties of high-performance fiber-reinforced cementitious composites (HPFRCCs) proportioned with high-volume fly ash after exposure to 200, 400, 600, and 800°C. The investigated thermal and mechanical properties include the thermal conductivity, specific heat, compressive strength, tensile strength, tensile ductility, and density. The effects of five mix proportioning variables on the material properties are evaluated, which include the water-to-binder ratio (0.24–0.36 by mass), sand-to-binder ratio (0.36–0.66 by mass), fly ash content (60%–75% by mass), polyvinyl alcohol fiber content (1.5%–2.2% by volume), and superplasticizer content (0.10%–0.15% by mass). Experimental results reveal significant dependence of the residual thermal and mechanical properties on temperature and the mix proportion, which can be attributed to a series of chemical and physical reactions that occur at elevated temperatures. This study can facilitate optimization of mix proportions of HPFRCCs for enhanced thermal and mechanical performance in fire or high temperature applications.
Thermal and mechanical properties of high-performance fiber-reinforced cementitious composites after exposure to high temperatures
https://orcid.org/0000-0002-2766-2077
HighlightsThermal properties of HPFRCCs after exposure to high temperatures.Mechanical properties of HPFRCCs after exposure to high temperatures.Effects of mix proportions on thermal properties of HPFRCCs.Effects of mix proportions on mechanical properties of HPFRCCs.
AbstractThis paper investigates residual thermal and mechanical properties of high-performance fiber-reinforced cementitious composites (HPFRCCs) proportioned with high-volume fly ash after exposure to 200, 400, 600, and 800°C. The investigated thermal and mechanical properties include the thermal conductivity, specific heat, compressive strength, tensile strength, tensile ductility, and density. The effects of five mix proportioning variables on the material properties are evaluated, which include the water-to-binder ratio (0.24–0.36 by mass), sand-to-binder ratio (0.36–0.66 by mass), fly ash content (60%–75% by mass), polyvinyl alcohol fiber content (1.5%–2.2% by volume), and superplasticizer content (0.10%–0.15% by mass). Experimental results reveal significant dependence of the residual thermal and mechanical properties on temperature and the mix proportion, which can be attributed to a series of chemical and physical reactions that occur at elevated temperatures. This study can facilitate optimization of mix proportions of HPFRCCs for enhanced thermal and mechanical performance in fire or high temperature applications.
Thermal and mechanical properties of high-performance fiber-reinforced cementitious composites after exposure to high temperatures
https://orcid.org/0000-0002-2766-2077
HighlightsThermal properties of HPFRCCs after exposure to high temperatures.Mechanical properties of HPFRCCs after exposure to high temperatures.Effects of mix proportions on thermal properties of HPFRCCs.Effects of mix proportions on mechanical properties of HPFRCCs.
AbstractThis paper investigates residual thermal and mechanical properties of high-performance fiber-reinforced cementitious composites (HPFRCCs) proportioned with high-volume fly ash after exposure to 200, 400, 600, and 800°C. The investigated thermal and mechanical properties include the thermal conductivity, specific heat, compressive strength, tensile strength, tensile ductility, and density. The effects of five mix proportioning variables on the material properties are evaluated, which include the water-to-binder ratio (0.24–0.36 by mass), sand-to-binder ratio (0.36–0.66 by mass), fly ash content (60%–75% by mass), polyvinyl alcohol fiber content (1.5%–2.2% by volume), and superplasticizer content (0.10%–0.15% by mass). Experimental results reveal significant dependence of the residual thermal and mechanical properties on temperature and the mix proportion, which can be attributed to a series of chemical and physical reactions that occur at elevated temperatures. This study can facilitate optimization of mix proportions of HPFRCCs for enhanced thermal and mechanical performance in fire or high temperature applications.
Thermal and mechanical properties of high-performance fiber-reinforced cementitious composites after exposure to high temperatures
Li, Xiuling (author) / Bao, Yi (author) / Wu, Lele (author) / Yan, Qingxi (author) / Ma, Hongyan (author) / Chen, Genda (author) / Zhang, Huining (author)
Construction and Building Materials ; 157 ; 829-838
2017-09-21
10 pages
Article (Journal)
Electronic Resource
English
| British Library Online Contents | 2017
| British Library Online Contents | 2017
| British Library Online Contents | 2017
| British Library Online Contents | 2017