Effect of micro sized quarry dust particle on the compaction and strength properties of cement stabilized lateritic soil
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Date
2021
Journal Title
Journal ISSN
Volume Title
Publisher
Cleaner Materials
Abstract
Laboratory investigation on the effect of micro sized quarry dust on engineering behaviour of cement stabilized
lateritic soil was carried out. The specific concentration was on the effective way of curtailing, managing and
disposing solid wastes generated from quarry activities by incorporating them as admixture in cement amelioration
protocol of weak lateritic soil bound for sustainable subgrade material. In airfield, embankment, railways,
pavement foundation structures, special attention/consideration/interest is continually laid on how moisture
percolation affect the bearing capacity or strength of the subgrade layer. The quarry dust of 0 to 10 % was
admixed with cement of 0 to 8 %, both in step increment of 2% by dry weight of the soil forming a combination
matrix of twenty‐five test specimens in an amelioration protocol. The test results show that quarry dust admixture
steadily improved the plasticity index of cement stabilized soil through the reduction in plasticity index.
The maximum dry density in most part of the test, improved with increase in percentage stabilizers blend for
the individual corresponding optimum moisture content of the treated soil. The mechanical properties
(California bearing ratio and unconfined compressive strength) of cemented lateritic soil increased significantly
with increase in the micro sized quarry dust stabilizer. The resistance to loss in strength showed that more than
80 % durability values was recorded. The SEM/EDS analysis of the optimally stabilized specimen in contrast to
untreated soil established the development of calcite as C‐S‐H and C‐(A)‐S‐H. The formation of C‐S‐H and C‐(A)‐
S‐H which was also confirmed through the FTIR and XRD test was responsible for strength development.
Description
Keywords
Cement, Compaction characteristics, Lateritic soils, Microanalysis, Strength characteristics, Quarry dust
Citation
Etim, R. K., Ekpo, D. U., Attah, I. C., & Onyelowe, K. C. (2021). Effect of micro sized quarry dust particle on the compaction and strength properties of cement stabilized lateritic soil. Cleaner Materials, 2, 100023. https://doi.org/10.1016/j.clema.2021.100023