کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8103414 1522142 2015 26 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of surface pre-coating and silica fume on crumb rubber-cement matrix interface and cement mortar properties
ترجمه فارسی عنوان
اثرات پوشش سطح و سیلیس دی اکسید کربن روی ماتریس لاستیک سیمان و خواص ملات سیمان
کلمات کلیدی
لاستیک خرده نان، ملات، شکاف متقابل، قدرت مکانیکی، جذابیت،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
چکیده انگلیسی
Poor crumb rubber-cement matrix interface contributes to the reduction in mechanical strength observed in cement composites containing recycled scrap tires as fine aggregate. In this paper, the efficacy of a two-stage approach of using limestone powder (LP) pre-coated crumb rubber and silica fume (SF) to enhance the performance of rubberized cement mortar was investigated. LP pre-coated crumb rubber at 0%, 5%, 10% and 15% volume substitution of fine aggregate, and SF at 10% volume cement replacement were used. Mortar compressive strength, flexural strength, abrasion resistance, cement paste-crumb rubber interface and sorptivity were evaluated. As-received crumb rubber generally reduces the mechanical strength of mortar. However, in comparison to the reference mixture, comparable compressive strength and higher flexural strength were obtained in mixtures containing SF and up to 10% LP pre-coated crumb rubber. Optical micrographs showed that enhanced crumb rubber-cement paste interface and matrix densification are the main reasons for the strength enhancement. Moreover, the addition of crumb rubber to mixtures reduced the sorptivity of rubberized mortar.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Cleaner Production - Volume 104, 1 October 2015, Pages 339-345
نویسندگان
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