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A novel cement-based hybrid material
Department of Applied Physics and Center for New Materials, Helsinki University of Technology, Espoo.
Department of Applied Physics and Center for New Materials, Helsinki University of Technology, Espoo.
Laboratory of Building Materials Technology, Faculty of Engineering and Architecture, Helsinki University of Technology, Espoo.ORCID iD: 0000-0001-6287-2240
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2009 (English)In: New Journal of Physics, E-ISSN 1367-2630, Vol. 11, article id 23013Article in journal (Refereed) Published
Abstract [en]

Carbon nanotubes (CNTs) and carbon nanofibers (CNFs) are known to possess exceptional tensile strength, elastic modulus and electrical and thermal conductivity. They are promising candidates for the next-generation high-performance structural and multi-functional composite materials. However, one of the largest obstacles to creating strong, electrically or thermally conductive CNT/CNF composites is the difficulty of getting a good dispersion of the carbon nanomaterials in a matrix. Typically, time-consuming steps of purification and fimctionalization of the carbon nanomaterial are required. We propose a new approach to grow CNTs/CNFs directly on the surface of matrix particles. As the matrix we selected cement, the most important construction material. We synthesized in a simple one-step process a novel cement hybrid material (CHM), wherein CNTs and CNFs are attached to the cement particles. The CHM has been proven to increase 2 times the compressive strength and 40 times the electrical conductivity of the hardened paste, i.e. concrete without sand. © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.

Place, publisher, year, edition, pages
2009. Vol. 11, article id 23013
National Category
Infrastructure Engineering
Research subject
Structural Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-3211DOI: 10.1088/1367-2630/11/2/023013ISI: 000263104900003Scopus ID: 2-s2.0-62649174144Local ID: 1033352a-d925-45d8-8bcd-1f55eef43cbaOAI: oai:DiVA.org:ltu-3211DiVA, id: diva2:976067
Note

Upprättat; 2009; 20160222 (andcwi)

Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2024-01-17Bibliographically approved

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Cwirzen, AndrzejHabermehl-Cwirzen, Karin

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