Research on the feasibility of waste incineration bottom ash resources as CLSM aggregates

• Main Authors: Hsiao-Chuan Chang, 張孝全
• Other Authors: Wei-Chien Wang
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/52071310500932941023

碩士 === 中原大學 === 土木工程研究所 === 104 === The research discussed that waste incineration bottom slag replaed overall feasibility of natural aggregates producing CLSM. To explore the difference of CLSM property between the bottom slag aggregates and nature, and compare the construction specifications. The key factors incuded workability, unit weight, chloride ion content of fresh concrete, ball drop, and compressive strength. If the construction didn’t achieve request, it could increase superplasizer and calcium chloride to explore ways of improving properties. The result showed that when the bottom slag replaced natural aggregates, workability improved, compressive strength decreased. Others, chloride ion content, setting time and the ball drop test diameter would increase with the increasing proportion of bottom slag replacement. When the cement amount of bottom slag CLSM increased, workability improved, water-soluble chloride ion content reduced, setting time shortened, falling Ball constant diameter unchanged in 24 hr and compressive strength increased in 28 days. When the coarse aggregate amount of bottom slag CLSM increased, workability improved, setting time shortened, ball drop test diameter reduced in 24 hr, and compressive strength increased significantly in 28 days. When bottom slag CLSM added strong plasticizer, workability, water-soluble chloride ion content, setting time, and the falling ball diameter increased with the increasing of strong plastic dosage. However, compressive strength was reduced in 28 days. When the bottom slag CLSM added calcium chloride, workability was reduced, the water-soluble chloride ion content increased, setting time and the falling ball diameter reduced, and the compressive strength increased. When the bottom slag CLSM added strong plastic agent and calcium chloride, workability improved and setting time shortened. It was feasible to apply bottom slag for the whole resource used in CLSM, and meet the requirements within the construction specifications. However, it needed to make the best use of strong plasticizer for improving the work and calcium chloride for shortening setting time and improving compressive strength. However, lower demand for quality engineering could achieve by adjust the amount of cement, coarse aggregate dosage, water-cement ratio, and change the nature of CLSM.