INFLUENCE OF A SIMULATED ACID RAINFALL ON MECHANICAL PROPERTIES OF C50 CONCRETE
模拟酸雨条件下C50混凝土力学性能变化的研究

The mechanical properties of C50 concrete as well as the C50 concretes with slag,SBR polymer and fly ash respectively were tested after exposure in an environment of simulated acid rainfall for periods of desired length.The result showed that the main mechanical properties of these five concretes didn′t declined obviously and still met the requirements of the structure design on strength;Slag,SBR polymer and fly ash can improve the mechanical properties of concrete and lower the erosion rate of concrete to some extent in the later stage of the exposure in the condition of simulated acid rainfall occurred in area of Fushan city for a length of period around 75 years.The main trouble for concrete in acid rainfall is surface erosion.That is to say that the acid rain may induce the degradation of some mechanical properties which are sensitive to surface status such as flexural strength and tensile strength,which should be considered for designing and constructing of a reliable structure.