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SUMMARY:Modelling the pore solution of PC-blended cements - Nicolas Eroukh
 manoff\, CUED
DTSTART:20150430T150000Z
DTEND:20150430T160000Z
UID:TALK58354@talks.cam.ac.uk
CONTACT:Anama Lowday
DESCRIPTION:Thermodynamic and kinetic modelling is currently an important 
 tool in cement chemistry which enables to predict the evolution of the sol
 id and liquid phases of a given cementitious system. To date\, it has been
  able to predict several characteristics of Portland cement-Fly Ash (FA) a
 nd PC-slag blended cements: the composition of phase hydrate assemblages\,
  the kinetic reactivity of slag/FA particles\, and more recently the state
  of alkali ions in the pore solution.\nHowever\, some of these models cann
 ot yet predict the experimental observations made on the overall pore solu
 tion characteristics of PC-slag/FA blended cements. Our research uses the 
 geochemical speciation code (GEMS-PSI) to investigate the unmodelled obser
 vations in terms of the properties of the pore solution of PC blended with
  FA and slag. We use recent kinetic modelling data describing experimental
 ly observed behaviour of the dissolution of the major and minor phases pre
 sent initially in PC-slag/FA cementitious systems as input data in GEMS-PS
 I to predict the pore solution chemistry development of PC-slag/FA blended
  cements. The results obtained with this model are compared with the lates
 t relevant experimental data found in the literature on PC-FA blended ceme
 nts.\n
LOCATION: Cambridge University Engineering Department\, Lecture Room 5
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