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شیل نوعی سنگ رسوبی آسیاب شده است که از ترکیب کانی رس و دیگر کانیها و ذرات در اندازه لای، بهویژه کوارتز و کلسیت تشکیل شده است.کانیهای اصلی خاکشیل، مونت موریلونیت ،کوارتز، کلسیت، آلبیت و دولومیت می باشد . این خاک از مقاومت فشاری بالا، جذب آبو ضریب اشباع پایین و در نتیجه از استحکام و پایداری بالایی برخوردار است بنابراین شیل خاکی ایده ال جهت ساخت آجر...
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