Saline Areas Of The Durability Of Concrete Technology Research And Application

The influence of concrete's resistance is extensive. There is common destroy gene, such as the effect of temperature, humidity, the radiant heat of the sun and CO₂ in the air, it is inescapability to any concrete structure. there is another destroy gene, it is different from the circumstance which the concrete is under, such as erode, the harm of freeze and salt.In the littoral of our Country, many concrete bridges are under the influence of salt and alkali. The steel happen severity rust and the concrete is flaked from the structure under ten years. Through repairing, it can be used again, but it happens same destroy in three years. So we have to build a new constructure.In this paper, the research is based on the DongYing bridge, the research is about the destroy of salt and alkali to the structure, the precondition to improve concrete's resistance is to reduce the penetrability, the important measure to improve concrete's resistance is to use exceed thin mineral, Under different using circumstance, aiming at concrete's main destroy factor, the new measure to measure penetration of Cl is bring forward, and aiming at sulfate' destroy effect, the new measure to measure sulfate' destroy is bring forward, Basing on our research we explore excessive performance cement. scientific research fruits are applied in the course of DongYing bridge's construction, and it improve the concrete's resistance.