Concrete and Earthquake Engineering Research Group

Department of Civil & Structural Engineering

Dr Cyril Lynsdale



Department of Civil and Structural Engineering
Sir Frederick Mappin Building
Mappin Street,
S1 3JD


Dr Cyril Lynsdale is a lecturer in cement and concrete materials and technology. Having obtained his MSc from Leeds stayed on and for his work on superplasticisers and concrete performance was awarded a PhD. He stayed in Leeds for a further 2 years as a research fellow to work on pigmented pfa concrete for cooling tower construction before joining Sheffield in 1989. His main research focuses on studying concrete materials and properties at the micro and macro levels bridging the interface between science and engineering, and the use of various cementitious and other materials for the development of durable and environmentally friendly concrete promoting sustainable construction.

He was invited in 2000 to co-organise an international conference on sustainable construction, which was organised in collaboration with the Federal University of Paraiba, Brazil. He is a member of the Centre for Cement and Concrete and ACI and is currently course co-ordinator for the Departmental suite of MScs in Structural Engineering.

Recent activities and achievements

Recent research interest and work has been in the following areas:

  • Alkali activation of slag, pulverised fuel ash and natural pozzolana as sole binders for concrete
  • The combined effect of sulfate and chloride exposure on the formation of thaumasite in concrete
  • Calcium sulfoaluminate cement as binder for structural concrete
  • Development of high performance concrete incorporating metakaolin and other ternary blended cementitious systems
  • Geotechnical controls on aggregate-cement paste interfacial zone in concrete
  • Deterioration of heat cured mortars due to the combined effect of delayed ettringite formation and freeze-thaw cycling


Abdalkader AHM, Lynsdale CJ, Cripps JC (2015). The effect of chloride on cement mortar subjected to sulfate exposure at low temperature. Construction and Building Materials, 78 (2), pp. 102-111.
Cripps JC, Abubaker F, Lynsdale CJ, Taylor AJ (2015). Weathering of pyritic clay in the vicinity of concrete undergoing thaumasite sulphate attack. (pp. 1337-1341), Abstract: © Springer International Publishing Switzerland 2015.The possibility of attack of buried concrete due to the chemical aggressivity of the ground is of concern in the construction industry. Following the discovery in the late 1990s of seriously damaged foundations due to the formation of thaumasite...
Bondar D, Lynsdale CJ, Milestone NB, Hassani N (2015). Sulfate Resistance of Alkali Activated Pozzolans. International Journal of Concrete Structures and Materials, 9 (2), pp. 145-158.
(2015). Durability of GFRP Bars in Concrete Beams. In Proceeding of the Joint Conference FRPRCS-12 & APFIS-2015 (pp. 49-49).
Abualgasem JM, Cripps JC, Lynsdale CJ (2015). Effects of Wetting and Drying Cycles on Thaumasite Formation in Cement Mortars. Journal of Materials in Civil Engineering, 27 (7), pp. B4014006-B4014006.
Abualgasem JM, Cripps JC, Lynsdale CJ (2014). Effects of wetting and drying cycles on thaumasite formation in cement mortars. Journal of Materials in Civil Engineering, Abstract: As part of a study into the controls on the deterioration of concrete due to sulfate attack, mortars (50-mm cubes and 40×40×160??mm prisms) made with portland cement CEMI, and 90% CEMI + 10% limestone blend were exposed to BRE DS4 sulfate solution based on magnesium sulfate (MgSO4?????7H2O) under...
Abubaker F, Lynsdale CJ, Cripps JC (2014). Investigation of concrete–clay interaction with regards to the thaumasite form of sulfate attack. Construction and Building Materials, 67 (44-45), pp. 88-94, Abstract: The influence of clay composition on the severity of attack due to thaumasite sulfate attack (TSA) on concrete made with CEM I and CEM I blended with 10% Limestone Filler (LF) was investigated. Concrete specimens were exposed to weathered Lower Lias Clay (LLC), for which the water soluble sulfate...
Kinoshita H, Circhirillo C, Sanmartin I, Utton CA, Borges PHR, Lynsdale CJ, Milestone NB (2014). Carbonation of composite cements with high mineral admixture content used for radioactive waste encapsulation. Minerals Engineering, 59 (12), pp. 107-114, Abstract: Carbonation of ordinary Portland cement occurs naturally. This process is, however, not sufficient for the application of CO2 sequestration due to the very slow kinetics of the diffusion-controlled process. The present study shows that the carbonation can be enhanced in the hardened cement systems...
Abubaker F, Lynsdale C, Cripps J (2014). Laboratory study of the long-term durability of buried concrete exposed to Lower Lias Clay. Construction and Building Materials, 64 (07/09/2016), pp. 130-140, Abstract: This paper describes a long-term investigation into chemical degradation vulnerability of four different types of concrete that were exposed to pyrite rich clay. In this, four 100 mm square by 1.2 m long concrete columns made from Portland cement (PC), Portland limestone cement (PLC), sulfate...
Bondar D, Lynsdale CJ, Milestone NB (2013). Alkali-activated natural pozzolan concrete as new construction material. ACI Materials Journal, 110 (3), pp. 331-337.