Preparation And Application Of Salt-Frost Resistance Concrete In Bridge Deck Pavement

Concrete, as a traditional material of building, are widely used for the past years. But withthe rapid development of science & economy and increasing quality of life, common concrete, asa building material, can no longer meet the requirement such as high-compression, high-tensile,high-durability. Due to the cold weather in the north, snow and ice bring inconvenience to thetraffic, people often spread salt on the ground to ensure good transportation, as a result, theconcrete road & bridge are corroded seriously. This of course means a loss to the state and leadto an adverse effect on the society, which is also deviate from sustainable development and theconstruction of economize type society.In view of the bad damage of ground and bridge, this paper discuss a"Salt-frost resistance"and"Strength"double controlled concrete, which can avoid destroy and extend the service life ofthe building.The research concerns on mechanical properties and salt-frost resistance, compare withdifferent proportion concrete, in order to prepare an excellent salt-frost resistance concrete.The study of mechanical properties show that: by the addition of finely-powdered slag,Silica Fume and Dura fiber, the concrete (PPEK) get higher performance in 7 days, 28 days, 90days cube compressive strength comparison. Fiber, microsilica and finely-powdered slag,enhance the compressive strength of the specimen, but no apparent improvement onflexural-tolerant properties.The findings of durability properties suggest that: finely-powdered slag, Silica Fume, Durafiber improve the concrete's density, and make it reach 21 grade, which is far higher than theconstruction requirements of 12, and also give it better resistance to penetration and frost. In thispaper, Through the study of the action of freezing-thawing cycles in the water and NaClsolution to studying the capability of frost-resistance.Within the article, also introduce the process and technology of this high-performanceconcrete used on deck pavement from Zhuozhou to Jiuzhou of the Langzhuo Highway.