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자료유형
학술저널
저자정보
Yoobanpot, Naphol (Soil Engineering Research Center, Department of Civil Engineering, King Mongkut's University of Technology North Bangkok) Jamsawang, Pitthaya (Soil Engineering Research Center, Department of Civil Engineering, King Mongkut's University of Technology North Bangkok) Krairan, Krissakorn (Soil Engineering Research Center, Department of Civil Engineering, King Mongkut's University of Technology North Bangkok) Jongpradist, Pornkasem (Department of Civil Engineering, Faculty of Engineering, King Mongkut's University of Technology) Horpibulsuk, Suksun (School of Civil Engineering, and Center of Excellence in Innovation for Sustainable Infrastructure Development, Suranaree University of Technology)
저널정보
테크노프레스 Geomechanics & engineering Geomechanics & engineering 제15권 제4호
발행연도
2018.1
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1,005 - 1,016 (12page)

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This paper presents an investigation on the properties of two types of cement kiln dust (CKD)-stabilized dredged sediments, silt and clay with a comparison to hydrated lime stabilization. Unconfined compressive strength (UCS) and California bearing ratio (CBR) tests were conducted to examine the optimal stabilizer content and classify the type of highway material. A strength development model of treated dredged sediments was performed. The influences of various stabilizer types and sediment types on UCS were interpreted with the aid of microstructural observations, including X-ray diffraction and scanning electron microscopy analysis. The results of the tests revealed that 6% of lime by dry weight can be suggested as optimal content for the improvement of clay and silt as selected materials. For CKD-stabilized sediment as soil cement subbase material, the use of 8% CKD was suggested as optimal content for clay, whereas 6% CKD was recommended for silt; the overall CBR value agreed with the UCS test. The reaction products calcium silicate hydrate and ettringite are the controlling mechanisms for the mechanical performance of CKD-stabilized sediments, whereas calcium aluminate hydrate is the control for lime-stabilized sediments. These results will contribute to the use of CKD as a sustainable and novel stabilizer for lime in highway material applications.

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