An Experiment for Effects of Different Additives on Strength of Sediment Solidification

Abstract:

The solidification method is a significant and resultful method for the disposal of dredged sediment. Solidified agents can be employed to improve the unconfined compressive strength (UCS) of sediment solidification. In this work, considering of economy and practicability, three kinds of optimized compound additives are selected and investigated on the effects of UCS of sediment solidification. 7d., 14d.and 28d. solidification stadium were taken to test the UCS of samples. Results showed that the activator had the best effect on increasing the UCS. The comparative tests also indicated that adding any kind of additive into the cement-based materials could improve the UCS of sediment solidification, the highest value of UCS was 11.02MPa (SCAHR). By means of scan electron microscope (SEM) technology, the microstructure images of the raw sample and solidified sample were obtained, which help to understand the development of UCS of the solidified sediments.

• Periodical: Applied Mechanics and Materials (Volumes 357-360)
• Pages: 1235-1240
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.357-360.1235
• Online since: August 2013
• Authors: Guan Huan Chen, Jian Zhong Zhu
• Keywords: Additive, SEM, Solidification, Unconfined Compressive Strength (UCS)

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