Experimental Evaluation of Construction Waste and Ground Granulated Blast Furnace Slag as Alternative Soil Stabilisers
MetadataShow full item record
© 2016 Springer International Publishing Switzerland In this study, the effect of ground granulated blast furnace slag (GGBFS) and recycled construction waste (CW) on bentonite clay stabilisation were investigated. The unconfined compressive strength (UCS) of specimens was evaluated with different combinations of GGBFS and CW over various curing periods. A series of micro analysis tests consisting of scanning electron microscope, energy dispersive spectrometer and X-ray diffraction were also conducted to determine the microstructural arrangement and mineralogical effect of the stabilisation treatment. The UCS results showed an increment in strength after introduction of GGBFS and CW and the longer curing period produced more pronounced results. The optimum additive ratio was calculated as 5 % of slag and 20 % of construction waste under all curing conditions. The micro analytical results also indicated formation of structural bonds between admixtures and bentonite in stabilised specimens, as slag crystals and bentonite particles were observed to occupy the cavities and vesicles on the construction waste grains. However, the experimental data shows that the strength improvement is not significant with the addition of only construction waste.
Showing items related by title, author, creator and subject.
Hasan, U.; Chegenizadeh, Amin; Budihardjo, M.; Nikraz, H. (2016)The volumetric deviations in montmorillonite-rich clays like bentonite render such soils unsuitable to support overlying pavement and foundation structures. Moreover, green construction and sustainable waste management ...
Hasan, Umair (2015)Feasibility of stabilising bentonite with greener additives, construction waste and slag, was investigated. Addition of both additives improved unconfined compressive and direct shear strengths, optimum additives as 20% ...
Leek, Colin (2011)In 1992, Vellgrove Ave in the City of Canning was selected for a trial using slag lime stabilisation of local limestone. Trial sections were constructed using a control section constructed with limestone sub-base, crushed ...