A Study of Manufacturing Eco-Cement

• Main Authors: Yu-Hong Lin, 林育鴻
• Other Authors: Cho-Liang ,Tsai
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/26079648060994141948

碩士 === 國立雲林科技大學 === 營建工程系碩士班 === 94 === Due to the improvement of living standard, municipal waste has been increasing dramatically in the recent years. The government of Taiwan is promoting the use of incinerators to reduce the volume of wastes. However, the incinerated ashes have been becoming one of the environmental issues due to the shortage of land supply. Therefore recycling and reuse of incinerated ashes is now an urgent issue to be tackled. In this study, incinerated fly ashes and bottom ashes were been used as raw materials in producing so called Eco-Cement by high temperature oven. In the manufacturing, limestone powder was also added to the raw material to control the properties of the cement. The proportion of raw materials was calculated based on the cement parameters and boundary conditions. Six prototypes of Eco-cement were produced by experiments. Among them, Type V has the highest compressive strength, Type I has the second highest, and Type IV has the lowest strength among all types of Eco-Cement. Type I and V can fulfill the requisitions of CNS in compressive strength of 3 days, 7 days, and 28 days. In the experiments of cement setting, it was shown that for Type I, II, III, and IV setting time is longer for more addition of fly ashes. For all types of Eco-Cement, concentration of chloride increases as addition of fly ashes increasing. It was also shown that hydration and curing may fix the chloride and prevent its release. It is quite promising in treating incinerated ashes that manufacturing Eco-Cement can be achieved by replacing some fraction of natural raw materials by incinerated ashes.