Abstract

From several points of view, disposal of waste materials in an environment is respected to be a significant problem because of its very low biodegradability and existence in huge quantities. Waste of plastic and metal bottles caps, cans of juices and soft drink, and tires rubber being among the most pronounced. This study was conducted to evaluate the efficiency of reusing these waste materials in concrete production and solve the segregation problem. As segregation increases in concrete involving these waste materials due to lighter weight of them relative to nature aggregate, therefore, attention was intensive on using natural product (Gum Arabic) that is an environmentally friendly chemical material for improving concrete properties. The conducted tests include; compressive strength, flexural strength, splitting tensile strength, density, water absorption, and ultrasonic pulse velocity. The results showed that replacing the volume of coarse aggregate by 25% compacted bottles caps and pull-tab of cans, 20% the plastic bottle caps, and 25% tires rubber shreds used decreased the mechanical properties of concrete to some extent less than reference mix and they were enhanced by employing Gum Arabic. In addition, the employment of Gum Arabic as liquid in concrete mixes developed the mechanical properties of concrete, reduced segregation, however raised the water absorption percent and declined the density of concrete.

Highlights

  • The major source waste, due to the its mass production, the ecological challenges of this tires are due to its permanence, and materials

  • Empty metal cans and glass bottles for soft drinks are produce a large amount of mineral waste

  • Compatibility of cement and Gum Arabic: To evaluate the compatibility of cement - Gum Arabic mixture, slump test was achieved considering the proportion of water lessening for concrete mixes with Gum Arabic

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Summary

Introduction

The major source waste, due to the its mass production, the ecological challenges of this tires are due to its permanence, and materials. The use of Gum Arabic in concrete mix without waste materials (C2) increase the compressive strength about 3.79 MPa and 4.64 MPa at ages of 7 and 28 days, respectively in comparison to reference mix (C1).

Results
Conclusion
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