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شن و ماسه از مصالح بسیار مهم در صنعت ساختمان به شمار میروند، که میتوان آنها را هم به همان شکلی که هستند از طبیعت استخراج کرد و هم میتوان به صورت مصنوعی در کارخانجات تولید کرد. ماسهها را میتوان بر اساس کانیهایی که دارند، مثلا ماسه سیلیس، یا بر اساس شکل ظاهری، مثلا گوشه دار، تقسیم بندی کرد. ماسههایی که در صنعت ساختمان به کار میروند به سه دست...
![whatsapp](/images/whatsapp.png)
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یک پیام ارسال کرد