Area Of A Seaport Terminal Oceanic And Atmospheric Assess The Durability Of Reinforced Concrete Structures And Repair

Reinforced concrete structures in marine environments, due to harsh externalconditions, can significantly reduce the durability of structures, including chloride,acidic substances such as carbon dioxide from the atmosphere’s erosion of concretestructure, with chloride ion erosion is more serious. This thesis to a harbor dock forinstance, on the basis of engineering testing data and laboratory data durabilityassessment of reinforced concrete structure in marine environment, and based on theassessment results started corrosion of reinforcement in reinforced concrete structurefor protection and rehabilitation measures, to extend the durability of the structure oflife.（1）Through to the harbour project, for the extra protective thickness of steel,reinforced concrete has the potential, strength, and a determination to be protectiveprovisions of the thickness of the design and construction standards and utilization ofcorrosion of reinforcement an found its way into the situation and the impact ofconcrete ultimate factor was analysed.（2）On Harbour Terminal drill take concrete core-like, for chlorine ion concentration,and calcium carbonate content, and hair fine suction water of determination, and onchlorine ion concentration of measurement value for intends-in, under they inconcrete in the of distribution situation, can came outside environment on theTerminal erosion of serious degree, in Terminal different parts concrete of chlorineion content, and calcium carbonate content, and hair fine suction water all does notsame, so outside environment effect role of differences sexual is larger of.（3）In the structure life forecast equation which obtains based on the Fick second laweach parameter to the concrete structure life influence, according to examination dataand empirical datum to each parameter’s probability characteristic carries on theanalysis, and method the rust time’s forecast equation carries on the simulation usingMonte the Carlo to the steel bar at the beginning, obtains at the beginning of the steelbar the rust time distributed characteristic, according to the reliable target and theconcrete structure life’s relations, forecast this harbor wharf the endurance life is in 37.3.（4）Based on measurement data arrive at the pier of concrete carbonation moreserious, by on carbonization life of reinforced concrete structure for the predictioncome structures remaining life of carbide for10, further illustrates the concretestructure in marine atmosphere not only by the chlorine ion erosion severely, whileconcrete carbonation is by no means negligible.（5）Suffers the corroded situation and the endurance life forecast according to thestructure should use certain measure to carry on the protection and the repair to theconcrete structure, enhances the reinforced concrete structure the lasting quality,according to the present concrete structure tradition’s repair method, proposed in viewof this harbor wharf present repair measure.