Engineering Properties and Long-term Leachability of Alkali-Actived Cement Mortar Blended with Fine BOF slag

• Main Authors: Chen,Wei-Yu, 陳威宇
• Other Authors: Lin, Tzong-Tzeng
• Format: Others
• Language: zh-TW
• Published: 2017
• Online Access: http://ndltd.ncl.edu.tw/handle/98587870934290322137

碩士 === 國立高雄應用科技大學 === 土木工程與防災科技研究所 === 105 === Taiwan is a country that lacks natural resources. Recycling of waste has become one of the most important issues in environmental protection. According to China Steel Corporation, the production of Oxygen Furnace slag (BOF) is about 1.5 million tons / year, however, due to the problem that BOF slag might swell, most of will be reused only as a non-structural filling material. To understand the BOF slag fine aggregate of the relevant engineering application characteristics, the BOF slag fine aggregate is divided into two kinds of particle size in this study: In addition to measuring the amount of expansion, and the use of X-ray diffraction, thermogravimetric analyzer and inductively coupled plasma atomic emission spectrometer and other analytical techniques. The results show that when the BOF slag fine aggregate is added to the cement mortar, the swelling rate is only 0.16%, which is lower than the standard value of 0.8%; while the activity index over 110% is higher than the standard value of 75%, and then it is also very stable with long-term dissolution test.