Effect of silica fume and calcium carbonate whisker on interfacial behavior of near-surface-mounted FRP with magnesium phosphate cement

• Autorzy: Zhang Liwen , Geng Tao , Liu Zhouqiang , Zhang Wenhua , Shang Qinghu

Identyfikatory

DOI

10.1007/s43452-019-0004-x

• Języki publikacji: EN

Abstrakty

EN

Magnesium phosphate cement (MPC) is a potential substitute of epoxy as an adhesive material due to its advantages in setting time, early strength, and good fire and corrosion resistance. In this study, silica fume (SF) and calcium carbonate whisker (CCW) were employed to improve bond capacity of MPC which were used instead of epoxy in near-surface-mounted (NSM) fiber-reinforced polymer (FRP) systems. A direct pull-out test (DPT) was carried out to investigate bond performances of FRP–concrete interface after incorporating SF and CCW. According to the mix proportion of the MPC, a total of twenty-seven specimens in nine sets were divided into four groups: one group without additive, one group with SF alone, one group with CCW alone, and the last group with SF and CCW combination. Results showed that SF or CCW alone could improve MPC bond capacity, but their excess application would reduce it. SF and CCW combination, however, did not improve bond capacity as effectively as SF or CCW alone. Moreover, the addition of CCW would improve MPC’s bond ductility, with or without the adding of SF, but with the increase in CCW concentration, this improvement effect would decrease. Meanwhile, SF alone lowered its bond ductility.

Słowa kluczowe

EN

near-surface-mounted FRP; magnesium phosphate cement; epoxy; silica fume; calcium carbonate whisker

PL

epoksyd; cement; krzemionka; węglan wapnia

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2020
• Tom: Vol. 20, no. 1
• Strony: 14--29
• Opis fizyczny: Bibliogr. 20 poz., fot., rys., tab., wykr.

Twórcy

autor

Zhang Liwen

• Department of Civil Engineering, Guangzhou University, Guangzhou, China

autor

Geng Tao

• Department of Civil Engineering, Guangzhou University, Guangzhou, China

autor

Liu Zhouqiang

• Department of Civil Engineering, Guangzhou University, Guangzhou, China

autor

Zhang Wenhua

• Department of Civil Engineering, Nanjing Forestry University, Nanjing 210000, China

autor

Shang Qinghu

• Department of Civil Engineering, Guangzhou University, Guangzhou, China

Bibliografia

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Uwagi

PL

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020)