کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
259847 503644 2011 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Properties of EPS RHA lightweight concrete bricks under different curing conditions
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
Properties of EPS RHA lightweight concrete bricks under different curing conditions
چکیده انگلیسی

The depletion of non-renewable resources has become an alarming issue nowadays. Many environmentalists and researchers have been investigating the use of waste materials as a renewable resource for use especially as raw materials in construction. This paper reports on the potential use of waste rice husk ash (RHA) and expanded polystyrene (EPS) beads in producing lightweight concrete bricks. The RHA was used as a cementitious material since it is a lightweight reactive pozzolanic material. RHA was used as partial cement replacement, while the EPS was used as partial aggregate replacement in the mixes. Bricks of 215 mm × 102.5 mm × 65 mm in size were prepared in this study. The engineering properties of the bricks were investigated. Among the properties studied were hardened concrete density, compressive strength and water absorption of the EPS RHA concrete bricks. Scanning electron microscopy (SEM) analysis was also performed on the brick samples. Four types of curing conditions were employed in this study. These include full water curing, air dry curing, 3-day curing and 7-day curing. It was found that the properties of the bricks are mainly influenced by the content of EPS and RHA in the mix and also the curing condition used.


► EPS RHA concrete brick shows good potential for use in practical applications.
► 10% RHA replacement gives the optimum mix.
► EPS RHA concrete bricks can be classified as lightweight.
► All bricks satisfied the criteria of Class 1 bricks for load bearing purposes.
► Water absorption decreased as the percentage of RHA replacement is increased.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 25, Issue 8, August 2011, Pages 3648–3655
نویسندگان
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