Abstract
Composite concrete such as fiber reinforced concrete is widely used in structures because of its excellent properties such as compressive, flexural and tensile strengths and also high modulus of elasticity because it gives lower strain values under loading and too fewer cracks propagation. In this study, Aluminum strips was prepared by cutting the Coca- Cola cans as strips in concrete. The reason of using Aluminum strip is low density and good tensile strength (about 310 MPa) and also has a good ductility. The results of this study show good improvements in compressive, tensile and flexural strengths using 117 tested specimens for both concrete and mortar. In brief, about 22 % increment in compressive strength of Aluminum strip concrete and flexural strength increases from 3.31 MPa to 11.20 MPa when using Aluminum strips with 2.5 % by volume of concrete. The reinforced mortar with Aluminum strips demonstrates significant increments which are 27% for compressive strength and more than 100% for both flexural and tensile strengths comparing with reference mix.
Highlights
Before approximately five decades, the concept of composite materials such as fiber reinforced concrete, steel, glass and synthetic fibers such as polypropylene fibers was one topic of interest (Murali et al, 2012)
Tensile strength test done by using indirect method, and flexural strength done by using beams with 10*10*40 cm and tested after 28 days for finding flexural strength, the flexural test done by using the third point loading according to British standards 1881 [British Standards, 1983]
The flexural strength increased very highly from 3.31 MPa for reference mixes to 11.2 MPa, as demonstrated in Fig. 6, for maximum value of Aluminum strips, it should be noted that the increment in mechanical properties after 2% fibers is very low, so the use of extra values of Aluminum strips is not important
Summary
The concept of composite materials such as fiber reinforced concrete, steel, glass and synthetic fibers such as polypropylene fibers was one topic of interest (Murali et al, 2012). Concrete is weak in tensile strength and strong in compressive strength. The main aim of concrete technology is to strengthen the tensile in concrete using different composite materials such as fiber. Waste tins of coca cola reaches up to one million tons every year which creates environmental problem (WRAP, 2010). This study has focused on using waste Coca-Cola strips in concrete to improve the mechanical properties of concrete.
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