Soil physical properties as influenced by induced compaction under laboratory and field conditions

Shafiq, Muhammad; Hassan, Abul; Ahmad, Shahid

doi:10.1016/0167-1987(94)90098-1

Cited by 38 publications

(17 citation statements)

References 5 publications

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“…Most of the field and lab models soil samples presented similar structure, resulting in equal LBC. This was similarly observed by Shafiq, Hassan and Ahmad (1994), in a comparison of laboratory and field measurements of some soil physical properties including penetration resistance and bulk density. They however observed that the laboratory measurement overpredicted the compaction compared to the field conditions.…”

Section: Resultssupporting

confidence: 48%

Comparison of field and laboratory models of the load bearing capacity in coffee plantations

et al. 2013

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Precompression stress is an important property for assessment of tropical soil structure sustainability and is often determined in laboratory tests. The objective of this study was to compare the load bearing capacity models obtained with controlled moisture in laboratory and those obtained with natural field moistures determined a long one year. The evaluation of soil structural sustainability follows four distinct steps: soil sampling in the field, uniaxial compression test of the samples in the laboratory, determination of precompression stress and estimation of the load bearing capacity models. Laboratory estimates of precompression stress were obtained from moisture controlled in laboratory and from natural moisture determined in a field a long one year. In this process, the soil samples were saturated by capillarity with distilled water in laboratory, and after 48 hours, the samples were air dried to obtain the different moisture contents. Then, the precompression stress was determined for this both conditions. To verify if the load bearing capacity models obtained with controlled moisture in laboratory may represent the load bearing models obtained with natural field moisture, these models were compared using the homogeneity test procedure. It was observed that 75% of field models analyzed were similar to the laboratory models. Thus, due to the similarity on the load-bearing capacity models obtained using natural (field) or controlled (laboratory) moisture contents, the assessment of the soil structure sustainability can be done using both methods.Index terms: Agricultural traffic, Coffea Arabica L., homogeneity test, precompression stress. RESUMOPressão de pré-consolidação é uma importante propriedade na avaliação da sustentabilidade estrutural do solo e é determinada em testes de laboratório. Neste estudo, objetivou-se comparar modelos de capacidade de suporte de carga obtidos com umidade controlada em laboratório e com umidade natural de campo ao longo de um ano. A avaliação da sustentabilidade estrutural do solo ocorreu em quatro etapas: coleta de amostras de solo indeformado, ensaio de compressão uniaxial das amostras em laboratório, estimativa da pressão de pré-consolidação e obtenção dos modelos de capacidade de suporte de carga. As estimativas da pressão de pré-consolidação de laboratório e de campo foram obtidas com umidades controladas em laboratório e com umidade de campo, respectivamente, ao longo de um ano. No laboratório, a saturaçaõ das amostras se deu por capilaridade, com água destilada e depois de 48 horas, essas amostras foram secas ao ar para obter diferentes valores de umidade. Em seguida, realizou-se o ensaio de compressão uniaxial dessas amostras e a pressão de pré-consolidação foi determinada para as duas condições aqui proposta. Para verificar se os modelos de capacidade de suporte de carga com umidade controlada em laboratório podem representar os modelos de capacidade de suporte de carga de umidade natural, esses modelos foram comparados utilizando o teste de homogeneida...

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Section: Resultssupporting

confidence: 48%

Comparison of field and laboratory models of the load bearing capacity in coffee plantations

et al. 2013

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“…Some physical properties of soil that may be affected by loosening include bulk density, soil strength, infiltration capacity, water redistribution within the soil and the moisture retention. Soil parameters that are adversely affected by compaction or loosening of soil particles are those that control the content and transmission of water, air, heat and nutrients (Shafiq et al, 1994). Soil dry bulk density and penetration resistance increased with increase in the number of traffic passes while air permeability has been found to decrease with increase traffic intensity (Mamman and Ohu, 1998).…”

Section: Introductionmentioning

confidence: 98%

Tillage effects on bulk density, hydraulic conductivity and strength of a loamy sand soil in southwestern Nigeria

Osunbitan

Oyedele

Adekalu

2005

Soil and Tillage Research

293

151

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“…It was thought that this human activity might have changed the soil texture, which would then change their water retention characteristics. Since the soil density can reflect the compaction level of the land use (Shafiq et al 1994), the differences in solid phase distribution and soil density suggest the effects of human activities. Soil compaction may explain these differences because it affects the surface soil water content (Canarache et al 1984).…”

Section: Water Retention Abilitymentioning

confidence: 99%

Integrated Studies of Social and Natural Environmental Transition in Laos

Yokoyama¹,

Okamoto²,

Takenaka³

et al. 2014

Advances in Asian Human-Environmental Research

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Aims and ScopeThe series aims at fostering the discussion on the complex relationships between physical landscapes, natural resources, and their modification by human land use in various environments of Asia. It is widely acknowledged that humanenvironment interactions become increasingly important in area studies and development research, taking into account regional differences as well as biophysical, socioeconomic and cultural particularities.The book series seeks to explore theoretic and conceptual refl ection on dynamic human-environment systems applying advanced methodology and innovative research perspectives. The main themes of the series cover urban and rural landscapes in Asia. Examples include topics such as land and forest degradation, glaciers in Asia, mountain environments, dams in Asia, medical geography, vulnerability and mitigation strategies, natural hazards and risk management concepts, environmental change, impacts studies and consequences for local communities. The relevant themes of the series are mainly focused on geographical research perspectives of area studies, however there is scope for interdisciplinary contributions.

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Soil physical properties as influenced by induced compaction under laboratory and field conditions

Cited by 38 publications

References 5 publications

Comparison of field and laboratory models of the load bearing capacity in coffee plantations

Comparison of field and laboratory models of the load bearing capacity in coffee plantations

Tillage effects on bulk density, hydraulic conductivity and strength of a loamy sand soil in southwestern Nigeria

Integrated Studies of Social and Natural Environmental Transition in Laos

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