Study on Civil Engineering Characteristics of Incineration Recycled Granules with Different Particle Sizes

• Main Authors: CHIEN,FU-YUAN, 錢富源
• Other Authors: 鄭魁香
• Format: Others
• Language: zh-TW
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/ec9ju2

碩士 === 高苑科技大學 === 土木工程研究所 === 106 === Taiwan's oversupply of earth and stone caused by hurricanes has been difficult to obtain due to weather conditions, coupled with rising environmental awareness, which has made mining difficult and it has been difficult to ensure smooth sand supply. The Executive Yuan announced on January 11th, 107 that recycled pellets were used in the promotion of public works, stating: “The use of recycled pellets in public works is one of the important tasks for the government to push forward the circular economy, ... the appropriate use of renewable pellets public construction…". Demonstrate the policy philosophy of promoting the use of recycled pellets instead of natural pellets for public works. After incineration, the incineration plant produced wastes such as ash and bottom slag, respectively, and its bottom slag follow-up treatment was revamped at the current phase of the July 24, 106 announcement of the “Management method for reuse of incineration bottom ash from waste incineration plants”. Compared with the previous announcement, the main additions or amendments to the pre-delivery inspection items and the reuse of the particle size, test items and impurity rates and other items, and particularly pointed out as a cement product, concrete materials, cement raw materials, etc. It can be cured and reduce the risk of heavy metal dissolution, it can be in line with the environmental friendliness, and revised the use of location restrictions. Therefore, the bulk of the use of incineration recycled pellets, that is, controllable low-strength concrete, is set as the object of this study, and the construction outline of “No. 03377 Chapter V70 Controlled Low-strength Backfill Material” is formulated in accordance with the project, which indicates the use of pellets. The diameter must not be greater than [19 mm] or [50 mm]. Therefore, in this study, particle diameters (ie, 19 mm) specified in current management methods and if all fine-grained materials (ie, 4.75 mm or less) are used as the aggregate, and different water-to-gum ratios (3, 4, 5) and water are used. Solid ratios (0.3, 0.35, and 0.4) are variables. Controlled low-strength concrete is produced, and compressive strength tests, turbulence levels, and other test items are performed. The effect of each variation factor is explored by the Taguchi method. The results of the research are as follows: 1.The size of the bone material has no significant difference in the development of turbulence; however, the smaller the particle size, the higher the compressive strength. 2.The lower the water-binder ratio, the higher the compressive strength. The same water-solid ratio of different particle sizes, there is no significant difference in compressive strength. 3.If the compressive strengths of different ages are regarded as the same group, the optimal ratio for this study is 4.75 mm in particle size, 0.3 in water to solid ratio, and 3 in water to gel ratio.