| dc.description.abstract | According to study, more than 11 million tons of building construction and demolition wastes (CD&W) are generated each year in Taiwan. Although an auditing system has been exercised by the government to control and track the flow of CD&W, it is by no means the illegal dumping can be prevented.
RFID (Radio Frequency Identification) is one of the most important techniques in 21 century; it is good in object identifying and tracking. Its application can be found in various industry sectors including manufacturing, medical, educational, logistical, and so on. The objective of this study is to conduct a technical feasibility study of applying the RFID in tracking the flow of the CD&W in construction industry. The idea is to bury tags randomly in CD&W when it is generated on a job site. Information in regard to the project owner, contractor, carrier of CD&W and deposit or treatment site are pre-input into the tag. Once a batch of CD&W is dumped illegally, it can be traced back easily the person or the company who is responsible for the CD&W. Thus, the illegal dumping problem can be somewhat prevented.
Both active and passive tag systems were considered in the feasibility study. Considering the most likely environment the illegal dumped CD&W will be, laboratory tests were conducted on the factors of temperature, water content, constitution of CD&W, and so on. The success rate of reading the tags in different conditions was recorded. In addition, a site test was further conducted in a CD&W treatment center in the northern part of Taiwan. Tags were randomly thrown into a pile of CD&W when it was loaded onto a small truck (4 cubic meters). The truck then dumped the pile and the success rate of reading the tags was then recorded. The same process was repeated ten times.
It is concluded in this study that it is feasible to apply RFID technique for controlling the flow of CD&W. Passive tag system is recommended because its lower cost and relatively more stable to the impact by the surrounding environment. | en_US |