石油道路アスファルトが暗赤色になる理由
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石油道路アスファルトの原料はナフサ系重質油で、各分野の専門家の分析をお願いします
暗赤色は錆なのでしょうか？？？
こんにちは、私たちの原材料も純黒ではなく、少し暗赤色のものもあります。あなたが言う錆の原因は、三価鉄が赤褐色だからですよね？
こんにちは、それは原料のどの金属元素のせいですか？
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