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Properties of high ...
Properties of high yield synthesised carbon nano fibres/portland cement composite
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- Cwirzen, A. (author)
- Laboratory of Building Materials Technology, Faculty of Engineering and Architecture, Helsinki University of Technology, Espoo
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- Habermehl-Cwirzen, K. (author)
- Laboratory of Building Materials Technology, Faculty of Engineering and Architecture, Helsinki University of Technology, Espoo
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- Shandakov, D. (author)
- Department of Applied Physics and Center for New Materials, Helsinki University of Technology, Espoo
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- Nasibulina, L. I. (author)
- Department of Applied Physics and Center for New Materials, Helsinki University of Technology, Espoo
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- Nasibulin, A. G. (author)
- Department of Applied Physics and Center for New Materials, Helsinki University of Technology, Espoo
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- Mudimela, P. R. (author)
- Department of Applied Physics and Center for New Materials, Helsinki University of Technology, Espoo
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- Kauppinen, E. I. (author)
- Department of Applied Physics and Center for New Materials, Helsinki University of Technology, Espoo
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- Penttala, V. (author)
- Laboratory of Building Materials Technology, Faculty of Engineering and Architecture, Helsinki University of Technology, Espoo
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(creator_code:org_t)
- Thomas Telford Ltd. 2009
- 2009
- English.
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In: Advances in Cement Research. - : Thomas Telford Ltd.. - 0951-7197 .- 1751-7605. ; 21:4, s. 141-146
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- The compressive strength and electrical resistivity of hardened pastes produced either from nanomodified Portland sulfate-resistant cement (CHH) or a mixture of nanomodified and pristine sulfate-resistant cements were determined. The nanomodification included grow carbon nanotubes (CNTs) and carbon nanofibres (CNFs) on the cement particles. Pastes having a water-to-binder ratio of 0-5 were produced. The test results revealed that partial replacement of sulfate-resistant cement by CHH cement decreased the electrical resistivity of the 28 day old specimens but worsened the mechanical properties. The lower compressive strength was attributed to a lower degree of hydration of the CHH cement. The addition of a mixture of surfactants enabled the production of specimens consisting entirely of CHH cement. The hardened material obtained was characterised by a nearly doubled compressive strength in comparison with the reference specimens made from pristine sulfate-resistant cement. This was attributed to a high degree of hydration as well as reinforcing action of the CNTs and CNFs. The electrical resistivity was lowered by one order of magnitude classifying this material as a semiconductor.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Samhällsbyggnadsteknik -- Infrastrukturteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Civil Engineering -- Infrastructure Engineering (hsv//eng)
Keyword
- Structural Engineering
- Konstruktionsteknik
Publication and Content Type
- ref (subject category)
- art (subject category)
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