Abstract: Using the construction of the railway between Luoyan and Zhanjiang as background,based upon the experimental results of shrinkage and creep of eight non-glued concrete beams with different mixtures of high-performance fly ash,the shrinkage,creep and camber of beams with different mixtures of high-performance fly ash concrete under long-term loadings are investigated.The effects of the environmental factors such as temperature,humidity are also explored,the experimental results over 300 days indicate that the non-glued concrete beams with 20%～40% high performance fly ash not only have better workability and mechanical properties,but also exhibit better long-term performance.Compared with concrete beams of same strength but without fly ash,they have higher late-stage strength and compressive elastic modulus,lower shrinkage and less creep with desirable social and economic profitability.