A foundational investigation of vinyl ester / cenosphere composite materials for civil and structural engineering

Davey, Scott W. (2004) A foundational investigation of vinyl ester / cenosphere composite materials for civil and structural engineering. [Thesis (PhD/Research)] (Unpublished)

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Abstract

[Abstract]: With the increasing use of fibre reinforced polymer (FRP) composites in civil engineering structures, there is a growing realisation of the need to develop new structural systems which can utilise the unique characteristics of these materials in a more efficient and economical manner. In many instances this will require the development of new materials tailored to address the unique performance and economic parameters of mainstream construction. Over recent years, researchers at the University of Southern Queensland have pioneered the use of a new type of particulate filled polymer core material which greatly improves the robustness and cost effectiveness of FRP structural systems. These composite materials are composed of small hollow spherical fillers (microspheres) in a thermosetting polymer matrix. Initial research into these materials, including their feasibility in prototype structural elements, have shown these materials to have major potential for widespread application in structural composite systems. One of the most promising classes of these materials investigated to date are vinyl ester / cenosphere composites, which utilise cenospheres derived from fly ash in a vinyl ester matrix. Previously reported studies into these materials have been restricted to initial surveys of material behaviour which sought to identify key parameters in achieving desired performance outcomes in the composite. This dissertation presents the first in-depth investigation of these materials specifically as a core material option for civil infrastructure applications. The particular focus of this work is on the relationship of the vinyl ester matrix to the characteristics of the resulting composite. Several key matrix parameters were identified and assessed as to their influence on cure characteristics, fabrication operations, mechanical properties and the retention of such properties under elevated service temperatures. The outcomes of this work have significantly improved the understanding of matrix influences on the behaviour of these composite systems and have been drawn together to provide a number of recommendations on the application of this new technology to new structural systems.


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Item Type: Thesis (PhD/Research)
Item Status: Live Archive
Additional Information: Doctor of Philosophy (PhD) thesis.
Depositing User: epEditor USQ
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - No Department
Date Deposited: 11 Oct 2007 01:21
Last Modified: 02 Jul 2013 22:50
Uncontrolled Keywords: vinyl ester / cenosphere composites, civil engineering applications
Fields of Research (FOR2008): 09 Engineering > 0905 Civil Engineering > 090502 Construction Engineering
09 Engineering > 0912 Materials Engineering > 091209 Polymers and Plastics
URI: http://eprints.usq.edu.au/id/eprint/3180

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