Abstract
A number of the properties which have suffered due to the use of pyritiferous aggregate are owned by Dublin City Council. The remediation of two publicly owned developments is presented, with particular attention given to the significance of lateral, not just vertical heave. The experience has indicated that although the removal of the expanding fill may result in the closure of significant cracks in the building and the settling back of the roof and structural walls, care must be taken during the remedial works if secondary damage is to be avoided during the settling process.
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References
Hawkins, A. B., & Pinches, G. M. (1997). Understanding sulphate generated heave resulting from pyrite degradation. In A. B. Hawkins (Ed.), Ground chemistry: Implications for construction (pp. 51–76). Rotterdam: Balkema.
SR21: 2004—Guidance on the use of I.S. EN 13242:2002—aggregates for unbound and hydraulically bound materials for use in civil engineering work and road construction. NSAI
Reid, J. M., Czerewko, M. A. & Cripps, J. C. (2001/2005). Sulfate specification for structural backfills. TRL Report 447, TRL Ltd, Crowthorne.
Acknowledgments
The authors are grateful to JÂ J McKeon, particularly for his keen observation of defects and recording of information, and to Peter Ayton, both from Dublin City Council. Mike Eden of Sandberg is thanked for the SEM work and Marcus Hawkins for drawing the diagrams.
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© 2014 Springer International Publishing Switzerland
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Finnegan, P., Hawkins, A.B. (2014). Remediation of Senior Citizens’ Dwellings Affected by Pyrite-Induced Heave. In: Implications of Pyrite Oxidation for Engineering Works. Springer, Cham. https://doi.org/10.1007/978-3-319-00221-7_5
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DOI: https://doi.org/10.1007/978-3-319-00221-7_5
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