THE SIZE EFFECTS OF DIFFERENT STEEL FIBER REINFORCED CONCRETE SPECIMENS UNDER THE DIFFERENT SOLUTION ENVIRONMENTS

By testing flexural strength and compressive strength of different size samples during the corrosion age,it was studied the size effect values among steel fiber reinforced concrete samples with different size.According to the calculation method by definition,it was also studied the compressive strength size effect and the flexural strength size effect under the environment of different solutions.The results show that the compressive strength size conversion coefficient is the same between the non-standard sizes steel fiber reinforced concrete specimens and the standard steel fiber reinforced concrete specimens;the compressive strength size effect values are 0.94、0.86 and 1.00 from the non-standard specimens to the standard specimens;the flexural strength size effect values are 0.73、0.77 and 1.05.Thus a reliable theoretic basis could be provided for using the small size specimen instead of standard size specimen in corrosion tests.