The high humidity and diversified corrosion in offshore saline areas urgently require improving the durability of concrete,such as corrosion resistance.Combined with the corrosive environment of a thermal power plant project in Lianyungang to address the risk of internal and external temperature difference stress cracking and anti-corrosion durability of mass concrete.Research was conducted on the compressive strength,adiabatic temperature rise,volume stability,resistance to chloride ion corrosion,and resistance to sulfate corrosion of configured concrete.The results indicate that anti-corrosion mixtures such as S95 grade mineral powder and fly ash should be used for mass concrete in offshore saline areas,with mineral powder content of 30％～35％and fly ash+early strength activator content of 20％～25％.The activator prepared based on the principle of novel geopolymer alkali excitation can effectively avoid the adverse effects of large amounts of admixtures on the early strength of concrete,thereby avoiding the risk of corrosion damage.The reasonable use of large amounts of admixtures can improve the workability and corrosion resistance of concrete,reduce cement consumption,and meet the requirements of corrosion resistance and durability in saline areas.The research can provide a foundation and reference for the preparation of corrosion-resistant,low shrinkage,and high-performance concrete in offshore saline areas.
维普
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