Influence of metallic grid and fiber reinforced concrete strengthening on the shielding and impact resistance of concrete walls

• Autorzy: Yuan Tian‑Feng , Choi Jin‑Seok , Kim Young‑Hwi , Yoon Young‑Soo

Identyfikatory

DOI

10.1007/s43452-022-00427-3

• Języki publikacji: EN

Abstrakty

EN

In modern society, an ever-increasing emphasis is placed on structural safety design that not only considers external loading but extends to reduced electromagnetic interference. Generally, studies only consider shielding effectiveness of strengthening method or materials, and few studies have considered the relationship between damaged areas and shielding effectiveness. Therefore, the influence of metallic grid parameters and fiber reinforced concrete (HSDC) on shielding effectiveness with and without impact loading are studied in this research. Concrete wall strengthening with four types of metallic grid and three thickness types of HSDC were considered. Moreover, the relationship between damaged area ratio and shielding effectiveness was evaluated utilizing the low-velocity drop-weight impact test. In specimens with metallic grid or HSDC, shielding effectiveness with strengthening layer (13.4-64.1%) or thickness (35.6-46.2%) increase and grid size (> 7.8%) decreased. Specimen strengthened by smaller than 55.1% and 101% of the free space area ratio of single and double layer, respectively, exhibit more than 40 dB shielding effectiveness. For the specimen strengthened with HSDC, shielding effectiveness increased with strengthening area, except smaller than 6%. The smallest metallic grid and the thickest HSDC strengthening specimen exhibited improved impact resistance and great shielding effectiveness after impact loading.

Słowa kluczowe

EN

metallic grid; high strength concrete; high ductility concrete; electromagnetic shielding; impact resistance; damage area ratio

PL

siatka metaliczna; beton wysokiej wytrzymałości; ekranowanie elektromagnetyczne; odporność na uderzenia

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2022
• Tom: Vol. 22, no. 3
• Strony: art. no. e109
• Opis fizyczny: Bibliogr. 44 poz., rys., tab., wykr.

Twórcy

autor

Yuan Tian‑Feng

• School of Civil, Environmental and Architectural Engineering, Korea University, 125 Anam‑ro, Seongbuk‑gu, Seoul 02841, Republic of Korea

autor

Choi Jin‑Seok

• School of Civil, Environmental and Architectural Engineering, Korea University, 125 Anam‑ro, Seongbuk‑gu, Seoul 02841, Republic of Korea

autor

Kim Young‑Hwi

• COO‑WWS APAC Technical Sales Korea, Autodesk, Seoul 06164, Republic of Korea

autor

Yoon Young‑Soo

• School of Civil, Environmental and Architectural Engineering, Korea University, 125 Anam‑ro, Seongbuk‑gu, Seoul 02841, Republic of Korea

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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)