A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Utilization of GGBS-Based Geopolymer Lateritic Soils for Sustainable Pavements
Nowadays geopolymers have been recognized as eco-friendly materials as well as potential replacement of ordinary Portland cement (OPC) and lime, which are cementitious materials with three-dimensional tetrahedral frameworks of Al and Si. This paper presents experimental investigation on compaction characteristics such as optimum moisture content (OMC) and maximum dry density (MDD) and unconfined compressive strength (UCS) of a lateritic soil chemically altered with alkali activator along with precursor as ground granulated blast furnace slag (GGBS) with varying amounts of GGBS content. GGBS was added to the lateritic soil up to 30% in increments of 5%. Scanning electron microscopy (SEM) was undertaken on the geopolymer blends to know the micro-structural behaviour and chemical compounds. The results revealed that the unconfined compressive strength (UCS) of the GGBS-based geopolymer soils improved with addition of GGBS content. The micro-structural analysis confirmed the both pozzolanic reaction and ionic exchange takes place in the alkali-activated lateritic blends. The impetus for the utilization of geopolymers can be consuming GGBS in large quantities in their synthesis with the potential to reduce the use of high carbon footprint ordinary Portland cement.
Utilization of GGBS-Based Geopolymer Lateritic Soils for Sustainable Pavements
Nowadays geopolymers have been recognized as eco-friendly materials as well as potential replacement of ordinary Portland cement (OPC) and lime, which are cementitious materials with three-dimensional tetrahedral frameworks of Al and Si. This paper presents experimental investigation on compaction characteristics such as optimum moisture content (OMC) and maximum dry density (MDD) and unconfined compressive strength (UCS) of a lateritic soil chemically altered with alkali activator along with precursor as ground granulated blast furnace slag (GGBS) with varying amounts of GGBS content. GGBS was added to the lateritic soil up to 30% in increments of 5%. Scanning electron microscopy (SEM) was undertaken on the geopolymer blends to know the micro-structural behaviour and chemical compounds. The results revealed that the unconfined compressive strength (UCS) of the GGBS-based geopolymer soils improved with addition of GGBS content. The micro-structural analysis confirmed the both pozzolanic reaction and ionic exchange takes place in the alkali-activated lateritic blends. The impetus for the utilization of geopolymers can be consuming GGBS in large quantities in their synthesis with the potential to reduce the use of high carbon footprint ordinary Portland cement.
Utilization of GGBS-Based Geopolymer Lateritic Soils for Sustainable Pavements
Lecture Notes in Civil Engineering
Sil, Arjun (editor) / N. Kontoni, Denise-Penelope (editor) / Pancharathi, Rathish Kumar (editor) / Nagaraju, T. V. (author) / Sunil, B. M. (author) / Rao, M. Venkata (author)
2022-10-04
11 pages
Article/Chapter (Book)
Electronic Resource
English
Lateritic soils based geopolymer materials: A review
| Elsevier | 2022
An Experimental Investigation on Role of Geopolymer Concrete with GGBS in Rigid Pavements
| BASE | 2020
Properties and performance of lateritic soils in road pavements
| Tema Archive | 1997
Fracture properties of GGBS-dolomite geopolymer concrete
| Emerald Group Publishing | 2024
Fly Ash and GGBS Based Geopolymer as Alternate Binder for Treating Soft Soils
| Springer Verlag | 2023