Evaluation on the Mechanical Properties of Ground Granulated Blast Slag (GGBS) and Fly Ash Stabilized Soil via Geopolymer Process
Syafiadi Rizki Abdila,
Mohd Mustafa Al Bakri Abdullah,
Romisuhani Ahmad,
Shayfull Zamree Abd Rahim,
Małgorzata Rychta,
Izabela Wnuk,
Marcin Nabiałek,
Krzysztof Muskalski,
Muhammad Faheem Mohd Tahir,
Syafwandi,
Muhammad Isradi,
Marek Gucwa
Affiliations
Syafiadi Rizki Abdila
Centre of Excellence Geopolymer and Green Technology (CEGeoGTech), Universiti Malaysia Perlis, Kangar 01000, Perlis, Malaysia
Mohd Mustafa Al Bakri Abdullah
Centre of Excellence Geopolymer and Green Technology (CEGeoGTech), Universiti Malaysia Perlis, Kangar 01000, Perlis, Malaysia
Romisuhani Ahmad
Centre of Excellence Geopolymer and Green Technology (CEGeoGTech), Universiti Malaysia Perlis, Kangar 01000, Perlis, Malaysia
Shayfull Zamree Abd Rahim
Centre of Excellence Geopolymer and Green Technology (CEGeoGTech), Universiti Malaysia Perlis, Kangar 01000, Perlis, Malaysia
Małgorzata Rychta
Department of Physics, Częstochowa University of Technology, Generała Jana Henryka Dąbrowskiego 69, 42-201 Częstochowa, Poland
Izabela Wnuk
Department of Physics, Częstochowa University of Technology, Generała Jana Henryka Dąbrowskiego 69, 42-201 Częstochowa, Poland
Marcin Nabiałek
Department of Physics, Częstochowa University of Technology, Generała Jana Henryka Dąbrowskiego 69, 42-201 Częstochowa, Poland
Krzysztof Muskalski
Department of Physics, Częstochowa University of Technology, Generała Jana Henryka Dąbrowskiego 69, 42-201 Częstochowa, Poland
Muhammad Faheem Mohd Tahir
Centre of Excellence Geopolymer and Green Technology (CEGeoGTech), Universiti Malaysia Perlis, Kangar 01000, Perlis, Malaysia
Syafwandi
Faculty of Civil Engineering, Mercu Buana Universiti, Jakarta 11650, Indonesia
Muhammad Isradi
Faculty of Civil Engineering, Mercu Buana Universiti, Jakarta 11650, Indonesia
Marek Gucwa
Faculty of Mechanical Engineering and Computer Science, Częstochowa University of Technology, Generała Jana Henryka Dąbrowskiego 69, 42-201 Częstochowa, Poland
This study intended to address the problem of damaged (collapsed, cracked and decreased soil strength) road pavement structure built on clay soil due to clay soil properties such as low shear strength, high soil compressibility, low soil permeability, low soil strength, and high soil plasticity. Previous research reported that ground granulated blast slag (GGBS) and fly ash can be used for clay soil stabilizations, but the results of past research indicate that the road pavement construction standards remained unfulfilled, especially in terms of clay’s subgrade soil. Due to this reason, this study is carried out to further investigate soil stabilization using GGBS and fly ash-based geopolymer processes. This study investigates the effects of GGBS and ratios of fly ash (solid) to alkaline activator (liquid) of 1:1, 1.5:1, 2:1, 2.5:1, and 3:1, cured for 1 and 7 days. The molarity of sodium hydroxide (NaOH) and the ratio of sodium silicate (Na2SiO3) to sodium hydroxide (NaOH) was fixed at 10 molar and 2.0 weight ratio. The mechanical properties of the soil stabilization based geopolymer process were tested using an unconfined compression test, while the characterization of soil stabilization was investigated using the plastic limit test, liquid limit test, scanning electron microscopy (SEM), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FTIR). The results showed that the highest strength obtained was 3.15 MPA with a GGBS to alkaline activator ratio of 1.5 and Na2SiO3 to NaOH ratio of 2.0 at 7 days curing time. These findings are useful in enhancing knowledge in the field of soil stabilization-based geopolymer, especially for applications in pavement construction. In addition, it can be used as a reference for academicians, civil engineers, and geotechnical engineers.
