Durability of Concrete in Natural Draft Cooling Tower with Flue Gas Injection
AN Mingzhe
GAO Yang
WANG Yue
HAN Song
YU Ziruo
JI Wenyu
Abstract：The condensate solution stuck to the inner wall of natural draft cooling tower with flue gas injection contains large amount of SO42-,NO3-and H+,and it could erode the inner wall concrete.Therefore,the durability of ordinary concrete(NC30),high performance concrete(HPC30 and HPC50) and ultra-high performance concrete(UHPC) in the above environment under the actual operating temperature were studied through the indoor immersion experiments.The results show that the mass loss rate of NC30 reached the maximum,which is 7.6％,after 95 days condensate solution immersion.But for UHPC the value is just 1.3％,and for HPC30 and HPC50,the value is 4.4％ and 4.0％,respectively.The compressive strength of NC30,HPC30 and HPC50 increases first and then reduces with the increase of immersion time,and their strength loss rate is 40.3％,31.9％ and 19.8％,respectively,after 95 days immersion.The compressive strength of UHPC decreased with the increase of condensate solution immersion time,but its value is only 9.4％ at the same time.
Keywords：natural draft cooling tower with flue gas injectioncondensate solutionerosionhigh performance concreteultra-high performance concretedurability
Publication Date：2018-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 275-280 )