A Study of the Swage Sludge Applied with the Stability Treatment in Weak Pavement Subgrade Soil

• Main Authors: Chung-Chang Yang, 楊中政
• Other Authors: He-Yuan Wang
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/51037416115742199749

碩士 === 國立高雄應用科技大學 === 土木工程與防災科技研究所 === 92 === This research tried to use sludge, and tradition material that included fly ash, lime, and cement material to mix with cohesive soils. Design the admixing range of 2%, 4%, 8%, and 16%. According to the results of pH trial, the Ca followed Pozzolanic Reaction to reduce, and pH value also to be reduced by Curing period, including sludge/cement, sludge/lime, and fly ash. The results of Compaction test that appeared adding sludge, sludge/cement, sludge/lime, and fly ash would make unit weight reduced, so did plastic index. Moreover, by adding sludge, sludge/cement, sludge/lime, and fly ash could be helped the strength for increasing, especially sludge/cement can increase 2 ~ 4 times. When sludge content was added to the soft soil by weight at UUU test results, c value and friction angle was obviously increased and reduced individual. The high pressure permeability test shown that it was advantage of adding stabilized material by weight, but the sludge/cement and sludge/lime have reduced the permeability behavior with long-term curing period. By SEM-EDX test, the sludge contained 40~50 percentage of Pozzolanic material in relatively quantity, including 9% calcium. The silicate calcium hydration and ettringite produced after adding Stabilized material which was like lime or cement. And at different curing period the diffraction of C-S-H was raised by X-ray diffraction test, and the relative intensity was increased.