| Summary: | 碩士 === 國立交通大學 === 土木工程系所 === 104 === In recent years, because of the high fuel cost, the factories of the nation have gradually altered the boiler manufacturing process from the fuel oil-fired boilers to the coal-fired boilers; however, currently, there are certain limitations and difficulties in finding and building the waste landfill for the coal-fired boilers in Taiwan. In addition to the lack of the location for the waste landfill and the overexploitation of the natural aggregates in the nation, it is necessary to advocate the coal-fired boiler industry to practice the recycling use of the by-products not only to increase the value and the recyclability of the industrial waste, but to reach the goal of coal reduction, environmental protection and sustainable development, which can lessen the impact on the natural environment.
This experiment explores the Fly Ash by Yuen Foong Yu, the Bottom Ash by Yuen Foong Yu, the Bottom Ash by Cheng Loong and recycled coarse aggregate concrete by using these four recycled aggregates with different ratio into the CLSM. Additionally, the experiment shows the process of using the recycled aggregates, YBA, ZBA and recycled aggregate concrete to partially replace the natural coarse and fine aggregates; as for the binder, concrete, the fly ash and YFA are used with compatible ratio to combine with each other. The tests of the research involve 32 different CLSM ratios. The water and binder ratios are 1.08 and 1.16 and the relative humidity of the curing conditions are 100％, 80％, 40％ and moist cures for one and three days. The results are to test whether each ratio under different curing conditions fits the condition of CLSM’s Construction Specifications of Public Works and also to observe the durability.
Tests performed for each proportion are: Slump flow test, Flow Consistency test, Ball Drop test, Method of test for the water soluble chloride ion content of fresh concrete, the compressive strength of each age (7, 14, 28, 56, 90 days) and strain test of each age (1 to 7, 14, 28, 56, 90 days).
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