A comparative study of ground granulated blast furnace slag and bagasse ash incorporation on enhancing mechanical properties of expansive soil
Year: 2024
Type: article
Abstract: Expansive soils undergo swell upon wetting and shrink upon drying. The roads and the buildings constructed on these foundation soils often undergo differential settlements after certain period, which ultimately results in the collapse / failure of these structures. It is unavoidable in certain situations to use such types of soils, so, in this scenario, it is critical to improve these soils' performance properties. For this purpose, two binders including the ground granulated blast furnace slag (GGBS) and bagasse ash (BA) (these are natural fiber residues, obtained from the refining processing of steel and sugarcane mills, respectively) were used to investigate their role in reducing swelling of expansive soil and improving soil stability by examining the mechanical behavior of reinforced expansive soil. To examine the behavior of reinforced expansive soils, various testing approaches such as sieve analysis, hydrometer analysis, specific gravity, Atterberg’s limit, compaction test, swelling potential and direct shear, were used. The results showed that, for a steady rise in the proportion of reinforcement up to a particular threshold, i.e., up to 3% of GGBS and 12% of BA, optimum moisture content increased, and generally maximum dry unit weights decreased. The optimum moisture content increased from 23.2 % to 26.78 % and maximum dry unit weight decreased from 15.84 kN/m3 to 15.34 kN/m3. In both soaked and unsoaked conditions, the cohesiveness reduced, and the angle of internal friction increased as the percentages of reinforcement increased.
Source: Results in Engineering
Authors: Muhammad Shakil, Sohaib Nazar, Hawzhen Fateh M. Ameen, Arfan Shahzad, Furqan Ahmad
Language: English
Subfield: Civil and Structural Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,490
OpenAlex ID: W4404803919