Under the marine environment, most of the underground projects will be eroded by the corrosive materials in varying degrees, which will lead to the deterioration of engineering materials, The reduction of structural strength, and affect the normal use and service life of the project; the rich sea water in the marine environment is often the premise of the smooth implementation of the underground projects, And the chaotic scouring of the intertidal sea water will affect the underground structure It has great influence on the strength of concrete. Generally, the measures taken for underground structure concrete include: improving concrete grade according to environmental category, adding admixtures, reducing water cement ratio, increasing compactness, etc. to improve concrete performance, anti-seepage, anti freezing, anti carbonization, anti-corrosion performance, increasing concrete protective layer thickness, brushing anti-corrosion materials, etc. to extend concrete durability; the measures taken for reinforcement include: coating epoxy resin, mixing anti rust agent, etc They can protect the concrete of underground structure to a certain extent, and the relevant specifications have corresponding provisions on it, but only qualitative provisions, the real effectiveness and validity period are unknown, the durability of the structure leaves long-term hidden danger, and also leads to the increase of construction cost. In marine environment, the foundation treatment under complex geological conditions can provide reliable working face for the construction of underground structure, eliminate the adverse impact of marine environment on the concrete of underground structure, and provide guarantee for improving the durability of concrete.
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Apr 24, 2021
Yupeng Shen + 7
Open Access