کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
258532 503620 2012 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Reduction in environmental problems using rice-husk ash in concrete
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
Reduction in environmental problems using rice-husk ash in concrete
چکیده انگلیسی

The production of cement (key binding component of concrete) is costly, consumes high energy, depletes natural resources and emits huge amounts of greenhouse gases (1 ton of cement production emits ∼1 ton of CO2). Consequently, environmental degradation, serious pollution and health hazards associated with cement and concrete industries, have come under intense scrutiny from environmentalists and the governments.Developed and some developing nations, are already using industrial and agricultural wastes in concrete. These wastes also pose several environmental problems. Partial inclusion of waste instead of 100% cement has been found to be environmentally safe, stable, durable as well as economical.The present study used rice-husk ash (RHA) as a partial replacement of cement in concrete. X-ray diffraction analysis, scanning electron microscopic examination, compressive strength (without and with superplasticizers), flexural strength, resistance to aggressive chemicals and cost analysis were carried out. Concrete and mortars containing 25% RHA as a replacement of cement, exhibited same or better results compared to conventional concrete. Moreover, it leads to substantial cost savings not to mention benefits to the environment.


► Rice-husk ash waste use in concrete.
► Durable, cheap, sustainable approach.
► Less cement production.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 30, May 2012, Pages 360–365
نویسندگان
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