Durability of Bittern-Resisting Cement in High Concentration Brine
Bittern-resisting cement (BR) has more excellent performance to resist physical attack and chemical corrosion in high-concentration brine environment than ordinary Portland cement or sulfate- resisting Portland cement. The durability and chemical stability of bittern-resisting cement are studied under drying-wetting cycles in brine, the microstructure and chemical component of hydration products also are determined by SEM/EDXA. The corrosion resistance coefficient Kf of BR mortar prisms in high-concentration brine for 6 months is over 96%, and the mass loss of mortar prisms after 30 drying-wetting cycles in brine is only 4.3%. SEM/EDXA analysis shows that the microstructure and chemical composition of BR hydration products exposed to high-concentration brine environment is more densely and stable than those of ordinary Portland cement.
Huaiying Zhou, Tianlong Gu, Daoguo Yang, Zhengyi Jiang, Jianmin Zeng
B. W. Wang et al., "Durability of Bittern-Resisting Cement in High Concentration Brine", Advanced Materials Research, Vols. 197-198, pp. 972-976, 2011