Experimental investigation on mode II fracture performance of old-new concrete

• Autorzy: Liu Shuang , Shi Zhenwu , Jiang Tao , Wang Huili

Identyfikatory

DOI

10.24425/ace.2022.141897

• Języki publikacji: EN

Abstrakty

EN

The old-new concrete interface is the weakest part in the composite structure, and there are a large number of microcracks on the interface. In order to study the mode II fracture performance of the bonding surface of old-new concrete, the effect of planting rebar and basalt fiber is investigated. Nine Z-shaped old-new concrete composite specimens with initial cracks are made. Nine shear fracture load-displacement curves are obtained, and the failure process and interface fracture are discussed. On this basis, the mode II fracture toughness and fracture energy are obtained. The regression equations for fracture toughness and fracture energy are deduced with analysis of variance (ANOVA). The results show that fracture toughness and fracture energy increase with the increase of planting rebar number and basalt fiber content. With the increase of the planting rebar number, mode II fracture toughness and fracture energy increase more significantly. Planting rebar is the major factor for mode II fracture performance.

Słowa kluczowe

EN

new-old concrete; planting; rebar; basalt fiber; mode II fracture; fracture toughness; fracture energy

PL

beton nowy-stary; osadzenie; pręt zbrojeniowy; włókno bazaltowe; pękanie typu II; odporność na pękanie; energia pęknięcia

• Wydawca: Komitet Inżynierii Lądowej i Wodnej PAN ; Politechnika Warszawska, Wydział Inżynierii Lądowej
• Czasopismo: Archives of Civil Engineering
• Rocznik: 2022
• Tom: Vol. 68, nr 3
• Strony: 469--480
• Opis fizyczny: Bibliogr. 32 poz., il., tab.

Twórcy

autor

Liu Shuang

• School of Civil Engineering, Northeast Forestry University, Harbin, China
• Heilongjiang Transportation Investment Engineering Construction CO., LTD, Heilongjiang Transportation Investment Group Co, Harbin, China

• https://orcid.org/0000-0002-7971-4991

autor

Shi Zhenwu

• School of Civil Engineering, Northeast Forestry University, Harbin, China

• https://orcid.org/0000-0002-0860-5923

autor

Jiang Tao

• National & Local Joint Engineering Laboratory of Bridge and Tunnel Technology, Dalian University of Technology, Dalian, China

• https://orcid.org/0000-0002-0116-6307

autor

Wang Huili

• National & Local Joint Engineering Laboratory of Bridge and Tunnel Technology, Dalian University of Technology, Dalian, China

• https://orcid.org/0000-0002-0675-2524

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Uwagi

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).