Experimental Evaluation of Strength Characteristics of Stabilized Dredged Soil

A composite geomaterial (CGM) is developed using dredged soil, bottom ash, cement and air foam. The engineering properties of the CGM are characterized as a function of the content of the various admixtures and the curing time in a laboratory test program. Several series of unconfined compression tests were carried out to characterize the strength and elastic properties of the CGM. Experimental results indicate that the unconfined compressive strength and modulus of CGM are influenced by the content of each component in the mixture. The unconfined compressive strength of CGM increases with an increase in curing time due to the pozzolanic reaction of the bottom ash. The strength after 28 days of curing is found to be approximately 1.5–2.3 times the strength after 7 days of curing, regardless of mix conditions. The bottom ash materials contain nearly 50% siliceous material and 13.9% CaO. With the removal of particles larger than 4.75 mm, a larger surface area is available to react with cement. It is postula...

[1]  Sanjeev Kumar,et al.  Evaluation of Illinois Pulverized Coal Combustion Dry Bottom Ash for Use in Geotechnical Engineering Applications , 2003 .

[2]  J. Rocha,et al.  Evaluation of concrete incorporating bottom ash as a natural aggregates replacement. , 2007, Waste management.

[3]  Kuei Yi Lin,et al.  Engineering and Environmental Characterization of Municipal Solid Waste Bottom Ash as an Aggregate Substitute Utilized for Asphalt Concrete , 2008 .

[4]  N. J. Sell,et al.  The agronomic landspreading of coal bottom ash: Using a regulated solid waste as a resource , 1989 .

[5]  M A Gabr,et al.  Controlled low-strength material using fly ash and AMD sludge. , 2000, Journal of hazardous materials.

[6]  Takashi Tsuchida,et al.  USE OF LIGHT-WEIGHT TREATED SOILS MADE OF WASTE SOIL IN AIRPORT EXTENTION PROJECT , 2000 .

[7]  N. Ghafoori,et al.  Investigation of lignite-based bottom ash for structural concrete , 1996 .

[8]  Chihpin Huang,et al.  Recycling MSWI bottom and fly ash as raw materials for Portland cement. , 2008, Waste management.

[9]  C. Schwartz,et al.  Road soil retention of Pb leached from MSWI bottom ash. , 2007, Waste management.

[10]  Rodrigo Salgado,et al.  Geotechnical Properties of Fly and Bottom Ash Mixtures for Use in Highway Embankments , 2005 .

[11]  Yoichi Watabe,et al.  MECHANICAL PROPERTIES OF DREDGED SOIL TREATED WITH LOW QUANTITY OF CEMENT , 2001 .

[12]  D P Tripathy,et al.  Performance evaluation of cement stabilized fly ash-GBFS mixes as a highway construction material. , 2008, Waste management.

[13]  Young-Seog Kim,et al.  Mechanical behavior of lightweight soil reinforced with waste fishing net , 2008 .

[14]  Yoichi Watabe,et al.  ONE-DIMENSIONAL COMPRESSION OF AIR-FOAM TREATED LIGHTWEIGHT GEO-MATERIAL IN MICROSCOPIC POINT OF VIEW , 2004 .

[15]  Serji N. Amirkhanian,et al.  Coal Ash Utilization in Asphalt Concrete Mixtures , 1999 .

[16]  Takashi Tsuchida,et al.  The Lightweight Treated Soil Method: New Geomaterials for Soft Ground Engineering in Coastal Areas , 2004 .

[17]  Jun Otani,et al.  Visualization for engineering property of in-situ light weight soils with air foams , 2002 .

[18]  Monica Prezzi,et al.  Evaluation of the mechanical properties of class-F fly ash. , 2008, Waste management.

[19]  Takashi Tsuchida,et al.  Use of lightweight treated soil method in seaport and airport construction projects , 2003 .