The Methods Of Concrete Durability Design In Coastal Regions

Concrete is the most widely and biggest materials on Usage,with continuing development of materials Science, its use is more and more widely, its use more and more widely to the industry, which has become A very widespread area of Cross-industry,Cross-Subject, Mutual penetration.With the development of concrete applications, A variety of diseases has become increasingly acute concrete. Especially the problem of concrete durability has become the Primary Recognized problem in The civil engineering industry of the world, which is Serious constraints to the healthy development of the national economy.In our country, especially Coastal regions, This problem is more prominent, firstly, always the lack age of ultimate awareness on the concrete problems haven't always Taken appropriate measures;Secondly, for the Factors of Environment and climate, a concrete deterioration has been Accelerated; at the beginning of design, at home and abroad experience shows that it is the Effective way to reinforce concrete bridge durability that taking Preventive measures of protection, finally, the lot of Effects are obtained with less work.The subject mainly depended on the environmental categories and functions class of outer west highway in the newly-developed area of TianjinBinhai design Structure durability with the use period of design and to identify the major Technical requirements based on the different angles of Construction materials. And taken the huge bridge of yongding river as an example, Concrete mixture ratio design, trying mixing, and verify achievement of the durability design through the test had been done.