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In high latitude and altitude areas, cement-based composite is subject to freeze–thaw cycles. The uniaxial compressive properties and microstructure of steel–PVA fiber reinforced cement mortar incorporating CaCO3 whiskers (SPFRC-CW) before and after freeze–thaw cycles were studied in this paper. The relative mass loss (RML), relative ultrasonic pulse velocity (RUPV), and the stress–strain relationship of frost–damaged SPFRC-CW was measured for a study of the durability and mechanical property degradation rules. A damage model was established considering the freeze–thaw cycles and CW volume fraction for SPFRC-CW, which demonstrated decent consistency between theoretical and experimental curves. The microstructure was analyzed using an optical microscope (OM), scanning electron microscope (SEM), vacuum epoxy impregnation (VEI), and mercury intrusion porosimetry (MIP). The results suggest that the physical and mechanical properties of SPFRC-CW decreased with prolonged freeze–thaw cycles. The better frost resistance of SPFRC was related to the improved pore structure because of the presence of CW, as per the results of VEI and MIP.
Czasopismo
Rocznik
Tom
Strony
art. no. e190, 2022
Opis fizyczny
Bibliogr. 51 poz., fot., rys., wykr.
Twórcy
autor
- School of Civil Engineering, Dalian University of Technology, Dalian 116024, People’s Republic of China
autor
- School of Civil Engineering, Dalian University of Technology, Dalian 116024, People’s Republic of China
autor
- School of Civil Engineering, Dalian University of Technology, Dalian 116024, 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)
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-3ccc5979-e74c-4a11-870a-dd9d81274f00