Ordinary Portland Cement (OPC) has been extensively employed to stabilize soft clay. However, OPC exhibits inefficiency in treating high water content soft clay, necessitating a high dosage of OPC and resulting in significant CO2 emissions. Expansive agent (EA) is a cement additive that, during the hydration process, expands and fills some of the pores in the matrix. It has the potential to enhance the strength performance of OPC-treated soft clay. However, commercially available EA is currently costly and challenging to apply in cement-stabilized soft soil. In this study, EA derived from waste, including freshwater sludge (FS) and carbide slag (CS), was developed, and the feasibility of utilizing this waste-based EA in soft clay stabilization was examined. The EAs (both FS-CS based EA and commercial EA) were mixed with OPC and ground granulated blast-furnace slag (GGBS) for the stabilization of soft clay. The findings revealed that both FS-CS-based EA and commercial EA enhanced the unconfined compressive strength (UCS) of stabilized clay. FS-CS-based EA exhibited significantly better performance than the commercial EA in both OPC-stabilized clay and GGBS-stabilized clay. The strength enhancement effect of the FS-CS-based EA on GGBS-stabilized clay was significantly more pronounced than its effect on OPC-stabilized clay.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Utilization of Waste-Based Expansive Agents for Soft Clay Stabilization


    Additional title:

    Lecture Notes in Civil Engineering


    Contributors:

    Conference:

    International Conference on Transportation Geotechnics ; 2024 ; Sydney, NSW, Australia November 20, 2024 - November 22, 2024



    Publication date :

    2024-10-23


    Size :

    8 pages





    Type of media :

    Article/Chapter (Book)


    Type of material :

    Electronic Resource


    Language :

    English




    Stabilization of Expansive Soils with Agricultural Waste

    Tarhuni, Fares / Hossain, Zahid | Springer Verlag | 2024


    Evaluation of Locally Available Calcined Clay-Based Geopolymer for the Stabilization of Expansive Soils

    Chou, Sopharith / Biswas, Nripojyoti / Puppala, Anand J. et al. | Transportation Research Record | 2024

    Free access

    Rapid Chemical Stabilization of Soft Clay Soils

    Rafalko, Susan D. | Online Contents | 2007


    Rapid Chemical Stabilization of Soft Clay Soils

    Rafalko, Susan D. / Filz, George M. / Brandon, Thomas L. et al. | Transportation Research Record | 2007


    Effects of chemical stabilizers on an expansive clay

    Zhao, Honghua / Ge, Louis / Petry, Thomas M. et al. | Online Contents | 2014