Freeze-thaw Resistance Of Concrete Of The Research And Preparation

Huanghua Port is China's second west-east coal a major thoroughfare to the sea, is a mining, power, road, port, aviation as one of the four cross-century project of China Shenhua project is one important part. Channel Improvement Project of Huanghua Port is the first No. Shenhua project, the main role play sand prevention and dredging. Because the natural conditions in northern Bohai Sea in winter, Huanghua Port Improvement Project, including dike parapet pouring concrete, precast concrete and other armor block require high resistance to freezing and thawing durability of concrete in the use of the environment is tidal splash zone, winter temperatures below 0 degrees, cold water erosion on the ability of ordinary concrete stronger.Concrete to avoid early frost damage in the sea water and frost resistance with long-term in order to meet the engineering needs.In this paper, pre-engineered waterway Huanghua Port armor body works as background, the sea water environment, the preparation of freeze-thaw resistance of concrete, compared to the experimental data, determined and adjusted by experimental study of prefabricated concrete blocks with the body than the proposed body armor Frost durability of precast concrete and effective measures to be met Waterway Regulation Project of Huanghua freeze-thaw resistance of concrete construction methods. Through the mechanism of freezing the current domestic researchPoint out that the evaluation method of concrete frost problems; concrete freeze-thaw cycle of destruction according to the mechanism and evaluation methods, evaluation and freezing and thawing cycle of domestic anti-freeze-thaw test methods using mineral admixture superplasticizer + + complex function of air-entraining agent technology, by freezing and thawing test, inspection, screening and identification of raw materials, indoor experiments and comparative analysis of experimental data. For the marine environment, analysis of a variety of factors, test analysis by comparing the rate of mass loss, strength loss rate and surface damage conditionsConditions and other data, freeze-thaw resistance of concrete to take effective measures, the measure out the application of prefabricated channel regulation works in the construction process on the concrete track record and project quality evaluation, that the proposed measures to improve the armor on the body of concrete in sea water splash zones, anti-freeze-thaw durability with good results, can protect against dike so long to play a functional role.