Verification on asbestos release during surface preparation of deteriorated asbestos containing cement sheets

Asbestos cement sheets used under outdoor condition may need surface treatment because of deterioration. Surface preparation of deteriorated asbestos cement sheets may cause asbestos fibers release during surface preparation. In former study, airborne fibrous particles concentration was measured under several ways of surface preparation of existed deteriorated cement sheets containing asbestos. In this study, some substrate preparation methods were added, and airborne fibrous particles concentration was measured under those surface preparation methods, for the purpose of verification on safety of substrate methods and asbestos release during surface preparation.