Straddle Type Rail Transit PC Track Beam Experimental Research On Durability Of Concrete

Straddle type rail transit use of PC track beam for concrete structures, PC track beams are the key part it is load-bearing beams and a train track, not only for their high precision and more stringent demands on the quality and durability of concrete.Across seat type track traffic by with concrete volume big, engineering by at of environment complex, engineering requirements Centennial durable, and in by force and environment conditions role Xia deformation requirements strictly, and good of appearance quality, so for light rail engineering of features and on concrete performance of requirements, and Chongqing area material of situation, on cement concrete material developed corresponding of technology measures and science test project, established special organization to guide construction, makes concrete engineering reached security and long life requirements.Investigations have been completed and are operational Line 2 line and Line 3 on line PC track beam concrete main quality defects and the special geographical environment impact of Chongqing through the PC track beam for concrete durability study, to eliminate or reduce its PC track beam structure durability of potentially harmful purposes.Second in Chongqing area of concrete raw materials for a lot of research, development of study programmes.First phase is studying the effects of raw materials on the performance of concrete, concrete confecting technology for study PC track beam determine PC track beams C60 concrete mix.Phase ? study on durability of concrete.Phase ? for selected on-site verification testing of concrete mix.Finally, according to the experiment's data as well as the construction of the Chongqing Metro line line Line 2 and Line 3. summarize research results.