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The use of Cathode Ray Tube (CRT) glass as an aggregate in concrete is a promising approach for sustainable construction. The CRT technology, once innovative, is now obsolete, leading to the accumulation of millions of CR tubes globally, posing disposal challenges due to their toxic composition. The CRT glass, consisting mainly of silica along with various oxides and heavy metals, holds potential for recycling and reuse applications. Recycling methods for CRT glass, including closed-loop and open-loop recycling, offer avenues to mitigate waste and conserve resources. Integrating CRT glass into concrete improves mechanical properties and durability. Although replacing natural sand with CRT glass may slightly reduce compressive strength, innovative mix designs offset this effect. Concrete with CRT glass exhibits resistance to environmental factors, making it suitable for diverse construction applications. Addressing environmental concerns related to CRT glass disposal requires efficient recycling technologies and stringent regulations. Overall, integrating CRT glass into concrete presents a sustainable solution to mitigate environmental impacts while enhancing concrete performance.
Jalal et al. (Fri,) studied this question.