کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
256274 503546 2016 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of granite dust on mechanical and some durability properties of manufactured sand concrete
ترجمه فارسی عنوان
اثر گرد و غبار سنگ گرانیت در خواص مکانیکی و دوام بتن شن و ماسه تولید
کلمات کلیدی
گرد و غبار گرانیت؛ تولید بتن شن و ماسه؛ خواص مکانیکی؛ دوام؛ ویژگی های بسته بندی پلاستیکی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی


• Granite dust was mixed into manufactured sand concrete to replace the fly ash.
• The workability and drying shrinkage were improved.
• The mechanical and some durability properties were improved.
• Granite dust can be used as the supplementary cementitious material.

The fabrication process of manufactured sands produces plenty of dust, which not only occupies the land and pollutes the environment but also causes dam breaks and collapses. To make full use of it, such granite dust was herein mixed into manufactured sand concrete as supplementary cementitious materials to replace fly ash in different proportions. The mechanical and some durability properties of these concretes were studied. The results showed an improvement in the workability of the manufactured sand concrete by introducing granite dust. The early strengths of manufactured sand concrete decreased with the fly ash replacement, but the compressive strengths, bending strengths and elastic modulus increased in the later stage when the replacement ratio was 20%. Compared with pure cement concrete, the 56 days chloride penetration resistance of the modified concretes was enhanced remarkably. Although the electric flux increased with the increasing granite dust dosage, it was always located at the low permeability level. The dynamic elastic modulus only had a slightly decrease after 350 freezing and thawing cycles when the granite dust dosage was within 20%, but it obviously dropped down when that dosage reached 30%. The drying shrinkage of the modified concrete was also inhibited within 14 days, compared with the pure cement concrete.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 109, 15 April 2016, Pages 41–46
نویسندگان
, , , , , , ,