Feasible brittleness evaluation method and suggestion for brittleness reduction of cementitious materials based on stress–strain curve

• Autorzy: Fu Qiang , Wang Zhenhua , Zhou Zhiming , Niu Ditao , Wang Yan

Identyfikatory

DOI

10.1007/s43452-022-00536-z

• Języki publikacji: EN

Abstrakty

EN

In this study, a brittleness evaluation index B5 and brittleness–plasticity classification standard for cementitious materials were established, and a suggestion for brittleness reduction was proposed. The results showed that B5 established based on the principle of energy conversion can effectively characterize the variation in the brittleness of cementitious materials with the confining pressure, and the brittleness order of different cementitious materials. Based on the established brittleness–plasticity classification standard, the ranges of B5 corresponding to the weak, high and ideal brittleness are [0.3, 0.6), [0.6, 1) and 1, respectively; and those corresponding to the weak, high and ideal plasticity are [0.1, 0.3), (0, 0.1) and 0, respectively. Finally, a suggestion for brittleness reduction using prismatic aggregates and hybrid nanofibers, flexible and rigid fibers of different sizes was proposed, and the corresponding design process of cementitious materials with weak brittleness was given. The research results in this study provide a basis for the brittleness evaluation of cementitious materials and the design of cementitious materials with weak brittleness.

Słowa kluczowe

EN

cementitious materials; brittleness evaluation index; energy conversion; brittleness–plasticity classification standard; suggestion for brittleness reduction

PL

materiał cementowy; kruchość; plastyczność

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2022
• Tom: Vol. 22, no. 4
• Strony: art. no. e209, 2022
• Opis fizyczny: Bibliogr. 32 poz., rys., wykr.

Twórcy

autor

Fu Qiang

• School of Civil Engineering, Xi′an University of Architecture and Technology, Xi′an 710055, People’s Republic of China
• State Key Laboratory of Green Building in Western China, Xi′an University of Architecture and Technology, Xi′an 710055, People’s Republic of China

autor

Wang Zhenhua

• School of Civil Engineering, Xi′an University of Architecture and Technology, Xi′an 710055, People’s Republic of China

autor

Zhou Zhiming

• School of Civil Engineering, Xi′an University of Architecture and Technology, Xi′an 710055, People’s Republic of China

autor

Niu Ditao

• School of Civil Engineering, Xi′an University of Architecture and Technology, Xi′an 710055, People’s Republic of China
• State Key Laboratory of Green Building in Western China, Xi′an University of Architecture and Technology, Xi′an 710055, People’s Republic of China

autor

Wang Yan

• State Key Laboratory of Green Building in Western China, Xi′an University of Architecture and Technology, Xi′an 710055, People’s Republic of China

Bibliografia

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Uwagi

PL

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023)