A Method of Strip Footings Design for Light Structures on Expansive Clays

doi:10.5829/ije.2022.35.01a.24

Ultimate Bearing Capacity of Strip Footings on Hoek–Brown Rock Slopes Using Adaptive Finite Element Limit Analysis

Rock Mechanics and Rock Engineering ◽

10.1007/s00603-020-02334-6 ◽

2021 ◽

Author(s):

Gaoqiao Wu ◽

Minghua Zhao ◽

Rui Zhang ◽

Ming Lei

Keyword(s):

Finite Element ◽

Bearing Capacity ◽

Limit Analysis ◽

Ultimate Bearing Capacity ◽

Adaptive Finite Element ◽

Rock Slopes ◽

Strip Footings

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Behaviour of geocell-reinforced strip footings on slopes

Geomechanics and Geoengineering ◽

10.1080/17486025.2021.1912404 ◽

2021 ◽

pp. 1-17

Author(s):

Mohammad Reza Arvin ◽

Mehdi Heidari Sooreshjani ◽

Amir Khademhosseini

Keyword(s):

Strip Footings

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Strip footings on a three layer soil system: theory of elasticity approach

International Journal of Geotechnical Engineering ◽

10.3328/ijge.2007.01.01.47-59 ◽

2007 ◽

Vol 1 (1) ◽

pp. 47-59 ◽

Cited By ~ 7

Author(s):

Priti Maheshwari ◽

Manohar Viladkar

Keyword(s):

System Theory ◽

Theory Of Elasticity ◽

Soil System ◽

Strip Footings

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Improvement of Strength and Volume-Change Properties of Expansive Clays with Geopolymer Treatment

Transportation Research Record Journal of the Transportation Research Board ◽

10.1177/03611981211001842 ◽

2021 ◽

pp. 036119812110018

Author(s):

Rinu Samuel ◽

Anand J. Puppala ◽

Aritra Banerjee ◽

Oscar Huang ◽

Miladin Radovic ◽

...

Keyword(s):

Volume Change ◽

Carbon Dioxide Emissions ◽

Expansive Soils ◽

Linear Shrinkage ◽

Plasticity Index ◽

Specimen Preparation ◽

Expansive Clays ◽

Change Behavior ◽

Volume Change Behavior ◽

Lower Carbon

Expansive soils are conventionally treated with chemical stabilizers manufactured by energy-intensive processes that significantly contribute to carbon dioxide emissions globally. Geopolymers, which are synthesized from industrial byproducts rich in aluminosilicates, are a viable alternative to conventional treatments, as they are eco-friendly and sustainable. In this study, a metakaolin-based geopolymer was synthesized, and its effects on the strength and volume-change behavior of two native expansive soils from Texas, with a plasticity index over 20 were investigated. This paper elaborates on the geopolymerization process, synthesis of the metakaolin-based geopolymer, specimen preparation, and geopolymer treatment of soils. Comprehensive material testing revealed two clays with a plasticity index over 20. They were each treated with three dosages of the metakaolin-based geopolymer and cured in 100% relative humidity for three different curing periods. The efficiency of geopolymer treatment was determined by testing the control and geopolymer-treated soils for unconfined compressive strength (UCS), one-dimensional swell, and linear shrinkage. Field emission scanning electron microscope (FESEM) imaging was performed on the synthesized geopolymer, as well as on the control and geopolymer-treated soils, to detect microstructural changes caused by geopolymerization. A significant increase in UCS and reduction in swelling and shrinkage were observed for both geopolymer-treated soils, within a curing period of only 7 days. The FESEM imaging provided new insights on the structure of geopolymers and evidence of geopolymer formation in treated soils. In conclusion, the metakaolin-based geopolymer has strong potential as a lower-carbon-footprint alternative to conventional stabilizers for expansive soils.

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Stabilization of Expansive Clays Using Granulated Blast Furnace Slag (GBFS) and GBFS-Cement

Geotechnical and Geological Engineering ◽

10.1007/s10706-008-9250-z ◽

2008 ◽

Vol 27 (4) ◽

pp. 489-499 ◽

Cited By ~ 36

Author(s):

Erdal Cokca ◽

Veysel Yazici ◽

Vehbi Ozaydin

Keyword(s):

Blast Furnace ◽

Blast Furnace Slag ◽

Expansive Clays ◽

Granulated Blast Furnace Slag ◽

Furnace Slag

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The deformation and failure of strip footings on anisotropic cohesionless sloping grounds

International Journal for Numerical and Analytical Methods in Geomechanics ◽

10.1002/nag.3212 ◽

2021 ◽

Author(s):

Zhiwei Gao ◽

Jidong Zhao ◽

Xin Li

Keyword(s):

Deformation And Failure ◽

Strip Footings

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Centrifuge testing of soil–structure interaction effects on cyclic failure potential of fine-grained soil

Earthquake Spectra ◽

10.1177/8755293020981978 ◽

2021 ◽

pp. 875529302098197

Author(s):

Jason M Buenker ◽

Scott J Brandenberg ◽

Jonathan P Stewart

Keyword(s):

Soil Structure ◽

Interaction Effects ◽

Soil Structure Interaction ◽

Centrifuge Testing ◽

Geotechnical Centrifuge ◽

Structure Interaction ◽

Fine Grained ◽

Stiffness Properties ◽

Fine Grained Soil ◽

Strip Footings

We describe two experiments performed on a 9-m-radius geotechnical centrifuge to evaluate dynamic soil–structure interaction effects on the cyclic failure potential of fine-grained soil. Each experiment incorporated three different structures with a range of mass and stiffness properties. Structures were founded on strip footings embedded in a thin layer of sand overlying lightly overconsolidated low-plasticity fine-grained soil. Shaking was applied to the base of the model container, consisting of scaled versions of recorded earthquake ground motions, sweep motions, and step waves. Data recorded during testing were processed and published on the platform DesignSafe. We describe the model configuration, sensor information, shaking events, and data processing procedures and present selected processed data to illustrate key model responses and to provide a benchmark for data use.

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