Volume No. 8 Issue No.: 1 Page No.: 82-87 Jul-Sept. 2013

 

RECYCLING OF WASTE SLUDGE OF CATHODE-RAYTUBE MANUFACTURING UNITS AS ADDITIVE IN ASPHALT CONCRETE MIX

 

Park Jin-Soo, Kim Myung-Gyun, Kim Young-Ju*1, Kim Ji-.Hoon2, Lee Chang-Soo3 and Qureshi Tahir Imran4

1. Department of Environmental Engineering, Kyungpook National University, Daegu, (SOUTH KOREA
2. Department of Health Environment, Daegu Health College, Daegu (SOUTH KOREA)
3. Department of Architecture & Fire Protection, Uiduk University (SOUTH KOREA)
4. Department of Chemical Engineering, NFC-Institute of Engineering and Technology, Multan (PAKISTAN)

 

Received on : April 05, 2013

 

ABSTRACT

 

This study was conducted to look into possibilities of the recycling of Cathode-Ray-Tube’s (CRT) manufacturing waste sludge as additive in asphalt concrete mix materials. Specimens of varying compositions of asphalt and CRT sludge were prepared following standard operating procedures. Stability, flow rate, porosity and density of the recycled product were optimized corresponding to the Korean Constructional Industry Standards. Performance of mix design specimens was evaluated in accordance with Marshall Properties Test. An optimum value of CRT sludge was determined that could be recycled in asphalt concrete mix without causing damage to the engineering characteristics of the asphalt concrete mix material. Contaminants of heavy metal ions and other toxic chemicals in the leachate of prepared specimens were analyzed and found below permissible limit. Therefore, it was suggested that entire CRT sludge could safely be recycled in asphalt concrete mix materials as additive. Recycled product could successfully be utilized in meeting increasing demands of constructional materials in the country.

 

Keywords : E-waste management, CRT-sludge, Marshall Method, Solidified product, Korean constructional Industry standards

 

 

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