Wood bioash effect as lime replacement in the stabilisation of different clay subgrades

Zagvozda, Martina; Rukavina, Tatjana; Dimter, Sanja

doi:10.1080/10298436.2020.1862839

Cited by 9 publications

(1 citation statement)

References 42 publications

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“…At PC ash contents of 3%, 5%, 7%, and 10%, there was a significant reduction in clay fines by 16%, 30%, 35%, and 39%, respectively, accompanied by an increase in silt-sized particles 27%, 50%, 56%, and 61%, respectively. The significant reduction in fines of soils treated with various waste ash was reported by Noaman et al (2022), Zagvozda et al (2022), and Sai Pradeep and Mayakrishnan (2023).…”

Section: Particle Size Distributionmentioning

confidence: 71%

Pine cone ash stabilization of expansive soils

2024

Global NEST: The International Journal

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<p>The use of appropriate waste materials to stabilize problematic soils, such as expansive soils that are responsible for geotechnical damage, is a common practice in geotechnical engineering. This study presents the use of pulverized ash from the combustion of pine cone (PC) waste as a stabilizing agent to improve the engineering properties of expansive soils. A series of laboratory tests were carried out to examine the effect of different percentages of pine cone ash (PCA) content (3%, 5%, 7%, and 10%) on the Atterberg limits, swelling potential (Sp), linear shrinkage, compressibility, and unconfined compressive strength (qu) of naturally occurring swelling soils and the PC ash-treated soils. The results showed that PC ash contents of 5% and 7% contributed to a significant reduction in the swelling and shrinkage potential and an improvement in the coarsest texture, brittleness behavior, compaction properties, and compressive strength of the treated soils. Conversely, PC ash contents below 3% and above 7% showed minimal changes in the index and engineering properties of the PC ash-treated soils. In particular, the PC ash content of 5% resulted in optimal mitigation of the poor properties of the treated soils. The use of pine cone ash as a stabilizing agent represents a suitable and complementary subgrade soil material for expansive soils on which lightweight structures are built.</p>

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Section: Particle Size Distributionmentioning

confidence: 71%