A discussion of the paper “The effectiveness of supplementary cementing materials in suppressing expansion due to asr. part 2. Pore solution chemistry” by J. Duchesne and M.A. Bérubé

1994 ◽  
Vol 24 (8) ◽  
pp. 1577-1578
Author(s):  
S. Chatterji
Keyword(s):  
Pore Solution ◽  
Solution Chemistry ◽  
Supplementary Cementing Materials

Effect of Simulated Concrete Pore Solution Chemistry, Chloride Ions, and Temperature on Passive Layer Formed on Steel Reinforcement

2014 ◽  
Vol 111 (4) ◽  
Author(s):  
Abdulrahman Alhozaimy ◽  
Raja Rizwan Hussain ◽  
Abdulaziz Al-Negheimish ◽  
Rajeh Al-Zaid ◽  
D. D. N. Singh
Keyword(s):  
Pore Solution ◽  
Passive Layer ◽  
Chloride Ions ◽  
Steel Reinforcement ◽  
Solution Chemistry

Pore Solution Chemistry of Simulated Low Level Liquid Waste Incorporated Cement Grouts

1995 ◽  
Vol 412 ◽  
Author(s):  
Sadananda Sahu ◽  
Sidney Diamond
Keyword(s):  
Pore Solution ◽  
Liquid Waste ◽  
Early Period ◽  
Solution Chemistry ◽  
Ion Concentration ◽  
High Concentration ◽  
Chemical Methods ◽  
Low Level ◽  
Gas Condensates ◽  
Cement Grouts

AbstractExpressed pore solutions from simulated low level liquid waste cement grouts cured at room temperature, 50°C and 90°C for various duration were analyzed by standard chemical methods and ion chromatography. The solid portions of the grouts were formulated with portland cement, fly ash, slag, and attapulgite clay in the ratios of 3:3:3:1. Two different solutions simulating off-gas condensates expected from vitrification of Hanford low level tank wastes were made. One is highly alkaline and contains the species Na+, PO43-, NO2-, NO3- and OH-. The other is carbonated and contains the species Na+, PO43-, NO2- NO3- and CO32- In both cases phosphate rapidly disappeared from the pore solution, leaving behind sodium in the form of hydroxide. The carbonates were also removed from the pore solution to form calcium carbonate and possibly calcium monocarboaluminate. These reactions resulted in the increase of hydroxide ion concentration in the early period. Subsequently there was a significant reduction OH- and Na+ ion concentrations. In contrast high concentration of NO2- and NO3- were retained in the pore solution indefinitely.

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