As to landfilling, regulators were reminded that stockpiling and landfilling CRTs is not recycling, and both are horrible precedents for the flat panel devices market, which have similar costs to recycle.įor further information about CRT glass recycling, please contact David Wagger at (202) 662-8533 or Eric Harris at (202) 662-8514. But, in the end, it’s all about costs to recycle this stream responsibly, not capacity. Among the questions posed were: Is there capacity to handle the glass? And, should we landfill CRT glass? Both Levine and Harris answered the capacity question with a resounding “Yes.” Capacity is virtually unlimited, but it’s not for free. Far too many recyclers are taking deals they cannot afford, and original equipment manufacturers (OEMs), even with statutory obligations across the United States, are dramatically underpaying for the actual costs to responsibly recycle CRT glass. Recyclers cannot overpay and make it up the loss on volume. The solution is to recycle the glass. doi: 10.3989/mc. webinar, hosted by the State Electronics Challenge (SEC) and administered by the Northeast Recycling Council (NERC), attempted to answer a number of looming questions about the U.S. A comparative study of recycled aggregates from concrete and mixed debris as material for unbound road sub-base. Recycled CRTs are typically disassembled so that valuable materials can be. If reuse or repair are not practical options, CRTs can be recycled. EPA encourages repair and reuse as a responsible ways to manage CRTs. Jiménez J.R., Agrela F., Ayuso J., López M. A cathode ray tube (CRT) is the glass video display component of an electronic device (usually a television or computer monitor). Use of recycled aggregates in road sub-base construction and concrete manufacturing. ![]() doi: 10.1016/S0950-0618(02)00019-3.Ĭontrafatto L., Cosenza R., Barbagallo R., Ognibene S. Discarded cathode ray tubes (CRT) from televisions and computer monitors at a recycling centre. The best management option is to ensure that the assembly is separated into component parts so that these materials can be reclaimed or properly disposed. Cathode ray tubes (CRTs) are the large, bulky glass tubes in older television sets and computer monitors that are rapidly being replaced by flat-panel. Use of recycled aggregates in molded concrete bricks and blocks. Processed scrap metal and shredded circuit boards that are recycled are specifically excluded from solid waste regulations and therefore are not subject to hazardous waste. BS 882 Suitability of Recycled Concrete Aggregate for Use in Bs 5328 Designated Mixes. California has enacted legislation whose purpose is to facilitate the recycling of cathode ray tubes(CRT) glass. Limiting properties in the characterisation of mixed recycled aggregates for use in the manufacture of concrete. ![]() 2 The images may represent electrical waveforms ( oscilloscope ), pictures ( television set, computer monitor ), radar targets, or other phenomena. The analysis of the mechanical and environmental properties through different techniques of lixiviation was positive, showing the ability to use CRT for certain dosage percentages mixed with recycled aggregates.Ĭathode ray tube glass cement-treated materials civil infrastructures recycled aggregates.Īgrela F., De Juan M.S., Ayuso J., Geraldes V., Jiménez J.R. A cathode-ray tube ( CRT) is a vacuum tube containing one or more electron guns, which emit electron beams that are manipulated to display images on a phosphorescent screen. For the mechanical and environmental assessment of all of the samples and materials, the following procedures have been performed: the compliance batch test of UNE-EN 12457-4:2004 for RA, CRT, and mixtures the Percolation Test according CEN/TS 14405 for the mixtures, CRT, and RA Modified Proctor and load capacity (the California Bearing Ratio, or CBR) in all mixtures without cement addition, and finally, compressive strength of the material treated with cement at different ages of curing. This document aims to study the feasibility of incorporating CRT glass waste with recycled aggregate (RA) in combinations for use in civil engineering, more specifically in road bases and sub-bases. In addition, environmental awareness has led to greater use of recycled aggregates to reduce the exploitation of existing reserves. In the last 15 years, new types of display technologies have increasingly replaced cathode ray tube (CRT) screens, which has led to an increase in landfill of old discarded CRT televisions, which present a great environmental challenge throughout the world due to their high lead content.
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