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شن و ماسه از مصالح مهم در صنعت ساختمان به شمار میروند؛ که یا مانند ماسه بادی آنها را میتوان به طور مستقیم از طبیعت استخراج کرد و یا با خرد کردن سنگ کوهها و تبدیل آن به سنگدانههایی ریز در کارخانه، تولید کرد. شن و ماسه را بر اساس سایزی که دارند، از یکدیگر تفکیک میکنند. که دانههای ماسه ریزتر از شن و بین 0.075 تا 4.75 میلیمتر هستند. ماسهها در ...
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یک پیام ارسال کرد