2012 Volume 24 Issue 1 Pages 34-39
IR-coated iron wire, which was developed as wire rods for cage-type revetment around riverbanks, consists of 3 types of galvanized iron wire which is coated with primer and then laminated by extrusion with an ionomer resin. About durability of IR-coated iron wire, we compared the accelerated property of the WS-A(sunshine weather meter) test to the SUV(metal halide lamp) test with ionomer resin. As prior test revealed that the accelerating rate of the SUV test was 12 times faster than that of the WS-A test, on the basis of this supposition, we carried out durability evaluation tests by measuring tensile strength, elongation and C=O absorption in the IR spectrum(measuring the increase of carbonyl group) on IR-coated iron wire after the SUV test of 625h and the WS-A test for 7,500h. In conclusion, it was confirmed that the evaluation time of the SUV test is more than twenty times that of the WS-A test in ionomer resin.
