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Chemical-composition-based design of self-leveling geopolymer stabilized soil: Performance optimization and
Jianhua Li1,2, Haipeng Wu3, Zihang Shen3
1Huzhou Vocational and Technical College, Huzhou 313000, China.
Abstract:
This study develops a self-leveling geopolymer stabilized soil (SLGS) utilizing fly ash and slag chemistries. This innovation advances waste recycling and replaces cement, significantly reducing environmental impacts. A precise mix proportioning system was established via X-ray fluorescence (XRF) analysis, molar ratio control, and modeling. Sodium silicate modulus was investigated, identifying an optimal adjustment range of 2.0 to 1.2. Experimental results demonstrated that the prepared SLGS (15% binder) exhibited a 7-day water stability of 84.67% and a 28-day unconfined compressive strength (UCS) of 3.03 MPa at a flowability of 170 mm. These values are all superior to those of cement-stabilized soil. This study provides a reliable technical pathway for the utilization of construction waste, benefiting environmental sustainability and engineering practice.
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