DATABASE C:\Program Files\USGS\phreeqc-3.6.2-15100-x64\database\llnl.datSOLUTION 1-3 #Portlandite cement made by mixing dry CaO with NaNO3 solution pH 7 charge -water 1000 #kgEQUILIBRIUM_PHASES 1-10 Portlandite 0 0REACTION 1-3 CaO 1000 #mol NaNO3 1000 #mol 1 moles of above reaction in 1 stepsSAVE SOLUTION 1-3SAVE EQUILIBRIUM_PHASES 1-3ENDSOLUTION 4 #Acidic water for one boundary condition pH 7 charge -water 1000 #kgEQUILIBRIUM_PHASES 4 CO2(g) -2 10SAVE SOLUTION 4SAVE EQUILIBRIUM_PHASES 4ENDUSE REACTION NONE #has no apparent effectTRANSPORT #Portlandite exposed to acidic solution on one boundary -cells 3 -shifts 2 -time_step 1 yr -flow_direction diffusion_only -boundary_conditions closed constant -lengths 3*1 -diffusion_coefficient 1.e-9END
Transport step 1. Mixrun 1.Using mix 1. Using pure phase assemblage 1. Pure-phase assemblage after simulation 3.Using reaction 1.
SOLUTION 1 #Portlandite cement made by mixing dry CaO with NaNO3 solution pH 7 charge -water 1000 #kgENDEQUILIBRIUM_PHASES 1 Portlandite 0 0ENDREACTION 1 CaO 1000 #mol NaNO3 1000 #mol 1 moles of above reaction in 1 stepsENDUSE solution 1USE equilibrium_phases 1USE reaction 1SAVE SOLUTION 1-3SAVE EQUILIBRIUM_PHASES 1-3ENDDELETE-reaction 1END