Abstract
According to phase-contrast microscope analysis based on the JIS A 1481: 2006, chrysotile in the asbestos-containing building material waste was not detected after heating at 800°C for over 2 h. The asbestos-cement which was ground to below 180 μm after heating asbestos-containing building material waste at 800°C for 3 h was added into OPC to fabricate secondary cement product. When 50 mass% of the asbestos-cement was added to OPC, the compressive strength of the secondary cement product after 7 days was 32 MPa. Further chrysotile was not detected in the secondary cement product using phase contrast microscope analysis.
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