Provis, John L - University of Sheffield - Department of Materials Science and Engineering

个人简介

John joined the University of Sheffield in 2012 with a Chair in Cement Materials Science and Engineering. He completed a combined BE(Hons)/BSc in Chemical Engineering and Applied Mathematics at the University of Melbourne, Australia, in 2002, followed by a PhD in Chemical Engineering at the University of Melbourne in 2006. In 2006 he was appointed research fellow, then to senior research fellow, then manager (2006 - 2008) and leader (2009 - 2012) of the Geopolymer and Minerals Processing Group. He is also holder of APD and DORA fellowships, in the Department of Chemical & Biomolecular Engineering at the University of Melbourne. John was awarded the 2013 RILEM Robert L’Hermite Medal “in recognition of his outstanding contribution to the research and development of geopolymers and other construction materials”, and was awarded an honorary doctorate (Dr.h.c.) by Hasselt University, Belgium, in 2015 to recognise his leadership in the development of geopolymers and other novel cementitious materials. He holds funding from the European Research Council (grant: 'GeopolyConc'), as well as UK Research Councils, industry, and international sources. He is Chair of RILEM Technical Committee 247-DTA, a Voting Member of committees of ASTM and ACI, Associate Editor of the leading journals Cement and Concrete Research and Materials and Structures, and Speciality Chief Editor for the Structural Materials section of Frontiers in Materials.

研究领域

John's research centres on the development, characterisation and exploitation of advanced and non-traditional cement and concrete technology. Many projects involve alkali-activated and geopolymer binders, for use in construction, infrastructure and waste immobilisation applications. The range of topics covered include: Construction materials Geopolymers – chemical and engineering properties Chemistry of alkali aluminosilicate gels Other alkali-activated and Portland cement-hybrid concrete systems Rheology control Waste valorisation by alkali-activation Waste immobilisation in cementitious materials Novel cementing binders for nuclear and radioactive wastes: alkali and alkali-earth silicates, aluminates and sulfoaluminates Immobilisation of heavy metals Mass transport properties of cemented wasteforms Testing of cementitious materials Synchrotron-based and neutron-based methods for analysis of cements Advanced spectroscopic and microscopic techniques Durability testing methodologies for novel cements Validation of tests and performance prediction Performance-based standardisation Silica chemistry in complex aqueous environments Speciation and electrolyte solution chemistry Dissolution mechanisms of silicate minerals and glasses

近期论文

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Myers, R.J.; L'Hôpital, E.; Provis, J.L.; Lothenbach, B. "Composition-solubility-structure relationships in calcium (alkali) aluminosilicate hydrate (C-(N,K-)A-S-H)," Dalton Transactions, 2015, 44(30): 13530-13544. Provis, J.L.; Palomo, A.; Shi, C. "Advances in understanding alkali-activated materials," Cement and Concrete Research, 2015, 78A: 110-125. Walling, S.A.; Kinoshita, H.; Bernal, S.A.; Collier, N.C.; Provis, J.L. "Structure and properties of binder gels formed in the system Mg(OH)2-SiO2-H2O for immobilisation of Magnox sludge," Dalton Transactions, 2015, 44(17): 8126-8137. Mobasher, N.; Bernal, S.A.; Kinoshita, H.; Sharrad, C.A.; Provis, J.L. "Gamma irradiation resistance of an early age slag-blended cement matrix for nuclear waste encapsulation," Journal of Materials Research, 2015, 30:163-1571. Van Deventer, J.S.J.; San Nicolas, R.; Ismail, I.; Bernal, S.A.; Brice, D.G.; Provis, J.L. “Microstructure and durability of alkali-activated materials as key parameters for standardisation,” Journal of Sustainable Cement-Based Materials, 2015, 4(2):116-128. Myers, R.J.; Bernal, S.A.; Provis, J.L. "A thermodynamic model for C-(N-)A-S-H gel: CNASH_ss. Derivation and validation," Cement and Concrete Research, 2014, 66: 27-47. Bernal, S.A.; Provis, J.L. "Durability of alkali-activated materials: progress and perspectives," Journal of the American Ceramic Society, 2014, 97(4): 997-1008. Provis, J.L.; Bernal, S.A. "Geopolymers and related alkali-activated materials," Annual Review of Materials Research, 2014, 44: 299-327.