???:????????????(pH13??)???????,??????????????????????????????????.

1
???

• ???????????
• ????

2
?????????????? ?????

• ???????????????(pH13??)???????,??????????????????
  ????????????????.
• ?????????
• ??????????pH?????????????????????????????
• ?????????????????????????????????????
• ?????????????????????

3
????????
CONCRETEMicrostructure, Properties, and
Materials, Second Edition, P. Kumar Mehta, Paulo
J. M. Monteiro, McGraw-Hill
4
??????????

• ??????(????????)Fe?Fe22e- (??2?????????????????
  ??????)
• ??????1/2O2H2O2e-?2OH- (??????????????????????)
  
• ????Fe1/2O2H2O?Fe(OH)2
• ?????????????????(??)???(???FeOOH,Fe2O3????,Fe3O4
  ????).?????????2.5????????????????????,???????????
  ???
• (????????,????????????,??????????.????????????????
  ????????.??????,?????????????????.?????,CaCO3,Cl-?
  ???????????????.)

5
??????

• ????????????????????????
• ???(Carbonation)???????,????Ca(OH)2?????CO2????,?
  ??????CaCO3???????
• Ca(OH)2CO2?CaCO3H2O
• 3CaO2SiO23H2O(C-S-H)3CO2?3CaCO32SiO23H2O
• ?????????
• ??????????????????pH?????????,??????????,????????
  ???????,??????????????(???????????????????????????
  ,?????????.)
• ?????????(?????),???????????1???????????????????
  ???(?????pH10??????????????,??????????????????????
  ??.????????????????????????)

6
???(???)???
???? ???? ?? ? ???
7
???????????

• ????(???)???
• ??????(??????,???????????)??????,?????
  ?????????????????????
• ??????
• ?????? ??????? ??????????,CO2??????
• ????
• ???????????????????.CO2?????,?????.
• ??????????????????????,20-50??????????????.
• ??50-70RH????????,?? ??CO2??????.??
  ?????????????.(??????????????????????????,????????
  ??????????CO32-,HCO3-???????).

8
????????????
????? (CO2?????????)
?????????
????????
???? (????)
???
???
???
???
???????
??????? (?????)
??????? (??????)
??????? (??????)
9
????????(vt?)

• ybvt
• ???,y?????(mm),t?????(?),b???????(mm/v?)???????
  ???.
• ???,
• yR(-3.579.0W/B)vt(??????)
• ???,R??????????,????????R1.6,????????R1.0,W/B?
  ??????W/(CpkAd),W????,B??????,Cp???????,Ad?
  ?????(???????,????????),k???????????
  ???????k0,????????k0.7,????(??????),?????,????(?
  ??????)???
• ??
• Case-1OPC,W/C0.5,Case-2OPC,W/C0.4,Case-3OPC,W
  /C0.6,Case-4OPC?20FA??,W/B0.5,Case-5OPC?70BS
  ??,W/B0.5,Case-6OPC?70BS??,W/B0.4

10
????????????????????????????????????
11
???????????????
???? ?????? ?? ? ???
12
?????????????
????????
?????
?????
??
???
?????? ??????
13
????????????
?????????????
14
?????????????????(JR???) ???????????.?????20mm??
?????????????????????.????????????????10mm?????
???. ? ?????????????,???100??????????????10mm?????
??????? ??????????????
???????. ? ????????? ???????????????
???????????? ?????????
?????????????(???????)
15
?????

• ????????????????
• ??????
• ?????????
• (??????????)
• ????????????????????
• ????????