Sludge-lime of condensation and Unconfined compression properties

• Main Authors: Ding,Yuan-Yu, 丁元禹
• Other Authors: Yang,Chau-Ping
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/70739631136120089533

碩士 === 中華大學 === 土木與工程資訊學系(所) === 98 === Sludge is a product for sewage treatment works of Terminal .It is a great quantity and difficult to handle. Sludge can be recycled in the green vegetation of farmland or engineering, and need fertile ground to explore its dried and enhance the strength of the technology. For this reason, this study attempts to lime cure sludge (sludge -lime) of observation to their different air-dried time of condensation properties (The depth of Vicat needle 、Dry unit weight ) and Unconfined compression properties (strength , secant modulus ). The test material produced from Taipei dihua sewage treatment plant sludge dewatering. Test conditions of sludge-lime for the four initial moisture content rates ( = 83%、78%、73% and 68%) and nine lime content ( = 0%、3%、6%、9%、12%、15%、18%、21% and 24%). Regarding to the research of (1) the condensation process, curing of sludge-lime becomes hard, with a value of smaller to zero; (2) sludge-lime's complete curing time, = 83% is 10.0 、 =78% is 8.5 、 =73% is 6.5 and =68% is 4.5 ；（3）Drying efficiency of chemical reactions, =3% is 2.6%、 =12% is 8.9%、 =24% is 16.0%；（4）Sludge-lime cure on the soaking and softening time, <3% About 2 、 >9% it is not softening completely；（5）With the smaller, specimen becoming hard, make 、 larger. Thinking about that the cases of =78%、 =18%, by 35 5 , and by 30 181 、 by 503 6,193 .