| EPSRC Reference: |
GR/R18291/01 |
| Title: |
Accelerated Ageing & Durability Modelling of Glass Fibre Reinforced Cementitious Composites |
| Principal Investigator: |
Purnell, Professor P |
| Other Investigators: |
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| Project Partners: |
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| Department: |
Sch of Engineering |
| Organisation: |
University of Warwick |
| Scheme: |
Fast Stream |
| Starts: |
01 January 2001 |
Ends: |
31 December 2003 |
Value (£): |
63,021
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| EPSRC Research Topic Classifications: |
| Eng. Dynamics & Tribology |
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| EPSRC Industrial Sector Classifications: |
| Manufacturing |
Construction |
| Environment |
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Summary on Grant Application Form |
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Glass-fibre reinforced cement composites are commonly subjected to accelerated ageing in order that service life predictions can be made. The rationale underpinning current methods is now obsolete. It was developed empirically for use only with unmodified Portland cement-based matrices - modern grc uses modified and non-Portland matrices. A new rationale has been proposed which addresses these concerns. Preliminary results indicate that the old rationale is inappropriate for use with new GRC formulations and overestimate their durability. However, there is insufficient data available concerning the accelerated ageing behaviour of these new formulations to fully apply the new rationale. It is proposed that programmes of accelerated ageing, mechanical testing and microstructural studies are initiated to provide this data. Commercial GRC samples will be aged to varying periods of time at temperatures between 38 and 80(C and the degradation of mechanical properties with time evaluated and related to microstructural changes. The strength vs time data will be factored into a new durability model, the activation energies of the processes underlying the strength loss derived and design guidelines predicting service lives advanced. The findings will also allow the new model to be refined and the assumptions upon which it is based examined.
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
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| Date Materialised |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.warwick.ac.uk |