Unconventional Mortars With Recycled Cathode Ray Tubes Waste Glass

Abstract

In the European Union, the hazardous waste recycling has become a priority, as response at legal prohibition for landfilling of untreated WEEE. The economic and eco-efficient recycling methods acquire more and more interest from the industry. The Cathode Ray Tubes (CRT) glass derived from Waste of Electric and Electronic Equipment (WEEE) dismantle is known as hazardous waste, because of their heavy metals content, especially lead. For this type of waste, the authors have proposed in previous studies a green recycling method by embedding it in cement matrix. The purpose of this study is to obtain unconventional mortars with different ratio of CRT waste glass as substituent of natural aggregates, and to compare their mechanical strength with another original CRT composite one. The goal was to demonstrate the viability of the new CRT materials, obtained under the mortars EU Standard provisions, in order to enlarge the possibilities to recycle this type of waste. Mechanical tests and SEM analyses have been performed. The results showed that mechanical strength decreased with the increasing of CRT waste amounts; whereas the new original composite's mechanical properties are higher than the standard mortar. Nevertheless, the CRT "mortar" mechanical properties allow a comparison with plastering mortar even 100% of natural aggregates were substituted. This type of mortars represents an environmentally friendly option for WEEE recycling.

Archives of Metallurgy and Materials

“…To recycle the FrP wastes, some recycling methods as chemical, mechanical, thermal, and comprehensive recovery [1][2][3][4] as well as filler in concrete and mortars [5][6][7][8] are developed. correia et al [9] claim that landfilling is the least preferable option and countries like Germany have already forbidden composite landfilling.…”

Electronic Waste Management

“…Some technologies, such as cathode ray tube (CRT) TVs and monitors have largely disappeared, and newer products such as light emitting diode (LED) lighting are beginning to enter the waste stream. 3,[5][6][7] Additionally, the application of electronics is becoming even more pervasive and there are many new types of electronic products emerging. With the growth of the Internet of Things and the introduction of new materials, coupled with the use of printed electronics and additive manufacturing technology approaches, further types of electronics will increasingly be available and they will continue to expand into all walks of life.…”

Sound Absorbing Insulating Composites Based on Polyurethane Foam and Waste Materials

“…Research confirms the possibility to use different types of fibers, natural or synthetic, in making composite materials with acoustic properties. Thus, researchers have used different waste with fibrous characteristics to obtain sound absorbing materials: cellulose fibers [4,5], cotton [6], bamboo fibers [7], hemp fibers [8], jute fibers [9], banana fibers, non-woven short polypropylene fibers [10], coconut fibers [11,12], textile fibers [13], agricultural waste [14], tanned leather [15] and waste glass fibre [16,17].…”