Geotechnical Properties of Lateritic Soil Stabilized with Periwinkle Shells Powder

Dauda, Abiola M.; Akinmusuru, Joe O.; Dauda, A.; Durotoye, Taiwo Omowunmi; Ogundipe, Kunle Elizah; Oyesomi, Kehinde Opeyemi

doi:10.20944/preprints201811.0100.v1

Cited by 7 publications

(6 citation statements)

References 20 publications

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“…Dauda et al (2018) also contributed to the global efforts being made in encouraging environment-friendly processes in construction, by carrying out an investigation into the stabilization of lateritic soil using Periwinkles Shell Powder (PSP). As much as the incorporation of PSP can help improve clean process in construction, it is not widely available across Africa and non-coastal areas.…”

Section: Previous Workmentioning

confidence: 99%

Optimizing stabilization of laterite as walling unit

Mensah¹,

Ameyaw²,

Abaitey³

et al. 2021

JEDT

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Purpose Over dependence on river/sea sand as building material has impacted the environment negatively. However, laterite, which is an environment-friendly indigenous building material in sub-Saharan Africa, has been less exploited as a suitable alternative. This paper aims to ascertain the optimum cement–laterite mix proportion at which laterite can be stabilized for production of walling units. Design/methodology/approach Using an experimental method, laterite was collected from three borrow pit sites. Sieve analysis was performed to determine the particle size distribution. Also, the degree of workability of the cement–laterite mix was ascertained using slump test. Compressive strengths were determined at cement stabilization percentages of 3%, 7% and 10% on 12 cubes of100 mm cast and cured for 14 and 28 days, respectively. Findings The results showed that the lateritic soil investigated, achieves its optimum strength in 28 days of curing, at a stabilization level of 10%. An average compressive strength of 2.41 N/mm2, which is 20.5% greater than the target strength, was achieved. Practical implications To meet the desired compressive strength of alternative walling units while achieving environmental sustainability and efficiency in production, cement stabilization of lateritic soils should become a recommended practice by built environment professionals in sub-Saharan Africa. Originality/value This paper is one of the first research works that attempts to determine the optimum level at which the abundant sub-Saharan laterite can be chemically stabilized for the production of non-load bearing walling units. This research promotes an environment-friendly alternative building material to sea sand, river sand and off-shore sand.

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Section: Previous Workmentioning

confidence: 99%

Optimizing stabilization of laterite as walling unit

Mensah¹,

Ameyaw²,

Abaitey³

et al. 2021

JEDT

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“…Snail shells, obtained as a byproduct from the consumption of snails, contain calcium carbonate, a mineral known to enhance soil strength and stiffness. Research has shown that the addition of pulverized snail shells to the soil can has the potential to improve its engineering properties [11], [13]- [15], thereby reducing the need for a higher lime content [11], [16]. This eco-friendly approach not only offers a cost-effective solution but also contributes to waste reduction and sustainability.…”

Section: Introductionmentioning

confidence: 99%

Assessment of the Microstructure and Geotechnical Characteristics of Lime- Improved Lateritic Soil with the Addition of Pulverised Snail Shell and Sawdust Ash for Sustainable Highway Infrastructure

Fadugba,

Ojo,

OLUYEMI-AYIBIOWU

et al. 2024

Preprint

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This research investigated the effects of lime, Pulverized snail shell (PSS), and sawdust ash on the mechanical properties of lateritic soil for soil stabilization in construction. Various tests, including maximum dry density, moisture content, unconfined compressive strength (UCS), triaxial, permeability, compressibility, and California Bearing Ratio (CBR) tests, were conducted on soil samples with different proportions of additives. The results show that the addition of additives reduced maximum dry density and increased moisture content. The sample with 6% lime and 7.5% PSS exhibited the highest UCS of 302 kPa after 28 days of curing, while the untreated sample had a UCS of 121 kPa. Triaxial tests revealed reduced cohesion and increased angle of internal friction with higher additive content. The 6% lime and 7.5% PSS sample displayed the highest shear strength of 60.6 kPa and elastic modulus of 181.8 MPa. Permeability tests demonstrated that the 6% lime and 6% sawdust ash sample had the lowest permeability (6.67x10− 7 m/s) among the stabilized samples. The untreated soil exhibited high compressibility, whereas the 6% lime and 7.5% PSS sample exhibited the highest resistance to compression and deformation. The untreated soil had a soaked CBR value of 8%, while the 6% lime and 7.5% PSS sample achieved the highest soaked CBR value of 38%, making it suitable as a sub-base material. These findings highlight the effectiveness of lime, PSS, and sawdust ash in enhancing the mechanical properties of lateritic soil and offer valuable insights for soil stabilization in construction applications.

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“…Such subgrade problem soils could be expansive, collapsible, dispersive, soft clay and saline soils which causes detrimental effects to buildings and road structures. Low shear strengths, which are further reduced when wet or under other physical disturbances, are features of clays that are often undesirable in engineering [2]. When the subgrade soil sample obtainable for highway construction is not acceptable for the planned intents, soil stabilisation is necessary.…”

Section: Introductionmentioning

confidence: 99%

Chemical and Mechanical Characterisation of Clay Soil Stabilised with Steel Slag and Calcium Carbide Waste

Ogundare,

Adeleke,

Akinbuluma

2024

Civil Sustain. Urban Eng.

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Problematic subgrade soil such as clay is expansive by nature and is challenging to work with during pavement construction. In an effort to combat this issue and lower the rate of pavement failure on highway construction projects, cementitious industrial waste materials should be used. This study thus examined the influence of steel slag (SS) and calcium carbide waste (CCW) as stabilisers for clay soil. Chemical and mineralogical analyses of clay soil, SS and CCW were assessed while the stabilised soil were subjugated to Atterberg limit, compaction and california bearing ratio (CBR) tests. The existence of calcium oxide, iron oxide and calcium hydroxide in both the chemical and mineralogical constituents of SS and CCW indicate that they are binding materials which notably influences hardness and contributes more to the strength of the clay soil. With varied amounts of the additives (SS and CCR), the clay soil's liquid limit and plasticity index dropped from 54.0% and 13.8% to 43.5% and 9.2%, respectively. This significantly lowers the clay soil’s swell potential, increases its resilience, and decreases its infiltration capacity. The compaction characteristics revealed that SS and CCW enhanced the compactness of the clay soil signifying enhancement of the soil compaction properties. The CBR value of all the stabilised clay soils improve significantly with 40%SS + 60%CCW acquiring the maximum CBR of 17.3% and 29.0% compared with clay soil having CBR of 4.7% and 6.9% in soaked and unsoaked states respectively.

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Geotechnical Properties of Lateritic Soil Stabilized with Periwinkle Shells Powder

Cited by 7 publications

References 20 publications

Optimizing stabilization of laterite as walling unit

Optimizing stabilization of laterite as walling unit

Assessment of the Microstructure and Geotechnical Characteristics of Lime- Improved Lateritic Soil with the Addition of Pulverised Snail Shell and Sawdust Ash for Sustainable Highway Infrastructure

Chemical and Mechanical Characterisation of Clay Soil Stabilised with Steel Slag and Calcium Carbide Waste

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