Abstract
This thesis is a report of the result of "Investigation research on the method of accelerated weathering test for JIS A 5422 (Fiber reinforced cement sidings)" executed in Japan Fiber Reinforced Cement Sidings Manufacturers Association. In this report part 2, it reports on the proposals of the method of accelerated weathering test by metalhalide lamp for fiber reinforced cement sidings based on the result of the examination in NYG. The following conclusions were obtained. 1)The method by metalhalide lamp needs more consideration for the standard accelerated weathering test, because the evaluation result of the color difference has the tendency to vary according to the painting specification of the examination specimen and the test condition of the test machine. 2)The user of the fiber reinforced sidings is strongly demanding the standardization of the accelerate weathering test by the metalhalide lamp, because it is effective to shortening the test time and developing of the long life products. 3)The Association Standard method of weathering test by the metalhalide lamp was proposed aiming the collection and the examination of the experiment data.
