Dynamic impact compressive performance of expanded polystyrene (EPS)-foamed concrete

• Autorzy: Yuan Chen , Wenhua Zhang , Lei Zhang , Wanting Zou , Yunsheng Zhang

Identyfikatory

DOI

10.1007/s43452-022-00486-6

• Języki publikacji: EN

Abstrakty

EN

The mechanical property and thermal insulation capacity of EPS concrete will be reduced due to the uneven distribution and float of EPS particles. In this study, an effective strategy for resolving these issues is provided. Physical foaming was mostly employed in this process to prepare foam and inject it into EPS concrete. Different EPS contents and particle sizes were used to make the 11 groups of novel EPS-foamed concrete specimens. The Split Hopkinson Pressure Bar (SHPB) was used to investigate the dynamic impact performance of the new EPS-foamed concrete. The dynamic increasing factor (DIF), peak stress, energy absorption capabilities, and stress–strain curves were all reviewed. The findings revealed that when the amount of EPS in the system increased, the peak stress fell and the energy absorption capacity gradually increased. The energy absorbed was increased by 7–8 times in comparison to specimens lacking EPS. Furthermore, the optimal EPS con-tent ranged between 30 and 40% by volume. The EPS particle size had a significant impact on the specimen strength under dynamic impact load when the density was the same. It was determined that the optimal distribution of EPS particle size was 3–5 mm, based on the test results and the degree of specimen damage. Under the dynamic impact with the best particle size, EPS-foamed concrete demonstrated a relevant excellent energy dissipation capability, with a maximum DIF of 9.16.

Słowa kluczowe

EN

EPS content; particle size; dynamic strength; energy absorption capacity

PL

wielkość cząstek; wytrzymałość dynamiczna; pochłanianie energii

• 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. e164, 2022
• Opis fizyczny: Bibliogr. 29 poz., fot., rys., tab., wykr.

Twórcy

autor

Yuan Chen

• Department of Civil Engineering, Nanjing Forestry University, Nanjing 210037, China

autor

Wenhua Zhang

• Department of Civil Engineering, Nanjing Forestry University, Nanjing 210037, China

autor

Lei Zhang

• Department of Civil Engineering, Nanjing Forestry University, Nanjing 210037, China

autor

Wanting Zou

• Department of Civil Engineering, Nanjing Forestry University, Nanjing 210037, China

autor

Yunsheng Zhang

• Department of Materials Science and Engineering, Jiangsu Key Laboratory of Construction Materials, Southeast University, Nanjing 211189, China
• College of Civil Engineering, Lanzhou University of Technology, Gansu Province 730050, 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)