Abstract
An attempt to produce of roller compacted concrete (RCC) improved by adding waste plastic fibers (WPFs) resulting from cutting the PET beverage bottles was recorded in this study. The method which is used for production of RCC is an approved design method for ACI committee (5R-207,1980)[1]. WPF was added by volumetric percentages ranging between (0.5 to 2 %) and reference concrete mix was produced for comparison reason. Many tests were conducted on the models produced by rolling compacted concrete like compressive strength, flexural strength, modulus of elasticity, dry density, water absorption and ultrasonic pulse velocity. The analysis of the results showed that the use of plastic waste fibers (1%) had led to improvement in the properties of each of the compressive strength and flexural strength compared with reference concrete. Results also showed that the addition of these, fibers increase water absorption and reduce the speed of Ultrasonic pulse velocity.
Highlights
Roller compacted concrete (RCC) differs from conventional concrete principally in its requirement for a zero – slump consistency at the time of mixing and placement. This allows the material to be placed in successive layers using earth moving construction methods, When vibratory compaction adds to these individual layers, the resulting material exhibits comparatively high compressive strengths relative to the quantities of Portland cement used in the mixture, In addition, RCC mixtures are often able to utilize marginal aggregates which could not be tolerated in conventional concrete mix designs [2]
Concrete mixes containing plastic particles which were partially proportioned replaced with fine aggregate up to 20%
The aim of this research is studying the effect of adding waste plastic fibers, which are produced from the cutting by hand of plastic beverage bottles on the properties of RCC
Summary
Roller compacted concrete (RCC) differs from conventional concrete principally in its requirement for a zero – slump consistency at the time of mixing and placement This allows the material to be placed in successive layers using earth moving construction methods, When vibratory compaction adds to these individual layers, the resulting material exhibits comparatively high compressive strengths relative to the quantities of Portland cement used in the mixture , In addition, RCC mixtures are often able to utilize marginal aggregates which could not be tolerated in conventional concrete mix designs [2]. Concrete mixes containing plastic particles which were partially proportioned replaced with fine aggregate up to 20% They concluded that the addition of plastic particles led to a reduction in the strength properties. The aim of this research is studying the effect of adding waste plastic fibers, which are produced from the cutting by hand of plastic beverage bottles on the properties of RCC
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