Paper Title
Concrete Mixture With Plastic as Fine Aggregate Replacement

Abstract
For a long time, Taiwan has imported large numbers of foreign workers, who contribute not only to Taiwan's economic progress, but also to Taiwan�s society.The aim of the present study was to investigate the use of mobile phones by foreign workers in Taiwan.The study collected valid 309 samples of home care workers, long-term care workers, and factory workers from the population of foreign workers in Taiwan. Results showed that the predominant nation of origin was the Philippines (36.9%). Most of the sample were factory workers (43.7%), aged 21 to 30 years (63.1%), and had been staying in Taiwan for 13�36 months (38.8%). Unmarried subjects constituted 54.4% of the respondents.The higher their perceive stress is, the more severe their Internet addiction is.Recommendations for policy managers should include the rational use of smartphones as a means for foreign workers to alleviate their psychological pressure. Keywords- Internet Addiction,Foreign Worker, Occupational Stress