Comparison of compressive strength and electrical resistivity of cementitious composites with different nano- and micro-fillers

• Autorzy: Jiang S. , Zhou D. , Zhang L. , Ouyang J. , Yu X. , Cui X. , Han B.

Identyfikatory

DOI

10.1016/j.acme.2017.05.010

• Języki publikacji: EN

Abstrakty

EN

Cementitious composites with 0–1.5 wt.% Nano-SiO2 (NS), nano-TiO2 (NT), carbon nanotubes (CNTs), carbon nanofibers (CNFs) and carbon microfibers (CFs) are fabricated and tested. The enhancing effects of different fillers on the compressive strength and electrical resistivity of composites are compared, and the underlying modification mechanisms of fillers to composites are investigated by analyzing the difference in the morphology of fillers and rheology of composites. The compressive strength of composites containing 0.1% NS, 0.5% NT, 0.1% CNTs and 0.5% CFs by weight of cement presents approximately 12.5%, 20.8%, 16.8% and 21.4% higher than that of control sample, respectively. It is revealed that CFs also have improving effect on the compressive strength of composites besides flexural strength. When the composites with nano-fillers cannot be processed to ideal state, the reinforcing effect of nano-fillers is no better but even worse than that of micro-fillers. Composites with CNTs, CNFs and CFs possess good electrical conductivity. Composites with CNFs and CFs have a percolation threshold of electrical resistivity below 0.5%, while the percolation threshold of electrical resistivity of composites with CNTs is about 1%. Although CNFs do not have significant effect on compressive strength of composites, they have the best improvement to electrical resistivity.

Słowa kluczowe

EN

cementitious composite; compressive strength; electrical resistivity; nano-fillers; micro-fillers

PL

kompozyty; rezystancja; nano-wypełniacz

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2018
• Tom: Vol. 18, no. 1
• Strony: 60--68
• Opis fizyczny: Bibliogr. 36 poz., tab., wykr.

Twórcy

autor

Jiang S.

• School of Civil Engineering, Dalian University of Technology, Dalian 116024, China

autor

Zhou D.

• Deepwater Engineering Research Center, Dalian University of Technology, Dalian 116024, China

autor

Zhang L.

• School of Civil Engineering, Dalian University of Technology, Dalian 116024, China

autor

Ouyang J.

• School of Transportation and Logistics, Dalian University of Technology, Dalian 116024, China

autor

Yu X.

• Department of Mechanical Engineering, New York Institute of Technology, New York, NY 11568, USA
• School of Mechanical Engineering, Wuhan University of Science and Technology, Wuhan 430081, China

autor

Cui X.

• School of Civil Engineering, Dalian University of Technology, Dalian 116024, China

autor

Han B.

• School of Civil Engineering, Dalian University of Technology, Dalian 116024, China

Bibliografia

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018)