Behavior and Soil–Structure Interaction of Pervious Concrete Ground-Improvement Piles under Lateral Loading

Ni, Lusu; Suleiman, Muhannad T.; Raich, Anne

doi:10.1061/(asce)gt.1943-5606.0001393

Cited by 34 publications

(13 citation statements)

References 18 publications

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“…When the porosity values are 15%, 20%, and 25%, the average values of compressive strength are 20.7, 18.1, and 14.3 MPa, and the average initial hydraulic conductivities are 0.3, 0.5, and 1.1 cm/s respectively. The properties of pervious concrete are similar to the published results (Suleiman et al 2014;Ni et al 2016).…”

Section: R a F Tsupporting

confidence: 87%

“…When subjected to lateral loading, granular piles fail in direct shear at the location of loading or along the slope failure surface (Ni et al 2016). Although rigid piles, such as low-grade concrete piles and cement fly-ash gravel piles, can overcome the weak bonding problem of granular piles (Sariosseiri and Muhunthan 2009;Le Hello and Villard 2009;Zheng et al 2008;Jia et al 2011), they have poor permeability and induce a small foundation consolidation rate.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, an innovative ground improvement method that utilizes pervious concrete piles (PCPs) was proposed by Suleiman et al (2011), who developed an installation process and a creative method to investigate the soil-structure interaction under vertical and lateral loadings (Suleiman et al 2014;Lin et al 2016;Ni et al 2016). Pervious concrete, also referred to as porous concrete, is a mixture of Portland cement, gap-graded aggregate, and water with or without a small amount of fine aggregate.…”

Section: Introductionmentioning

confidence: 99%

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Clogging of pervious concrete pile caused by soil piping: an approximate experimental study

et al. 2018

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Due to their high permeability and high strength, pervious concrete piles (PCPs) can improve ground bearing capacity. However, clogging of pervious concrete in practice is a potential disadvantage. To investigate the clogging mechanism of PCPs due to sand piping, a series of laboratory simulation tests is conducted on a developed hydraulic conductivity test system. This testing demonstrates the effects of pervious concrete porosity, grading of fine movable particles, mix ratio of skeleton particles to movable particles, relative density of soil, and distance between PCPs on PCP clogging. The experimental test results show that the hydraulic conductivity of PCP decreases for approximately 70 min and then becomes relatively stable. In addition, it is observed that PCP clogging rarely occurs in cases of low pervious concrete porosity, small movable sand particle size, high sand relative density, and large pile distance. The results also show that measurement of electrical conductivity can be an alternative method of hydraulic conductivity measurement. Based on the test results, preliminary clogging models are proposed.

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Section: R a F Tsupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Clogging of pervious concrete pile caused by soil piping: an approximate experimental study

et al. 2018

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“…Pervious concrete is a special single-size aggregate concrete that offers high porosity and permeability (Suleiman et al 2014). Based on the experimental results, the axial-compression behavior of pervious concrete piles showed higher strength and stiffness than that of an identical granular column, while having a similar permeability coefficient (Suleiman et al 2014;Ni et al 2016). The high permeability of pervious concrete piles allows for easy grouting along the pile shaft and at the tip of the pile using percolation of a low viscosity bio-grout without the need of using complex proprietary pressure injection systems.…”

Section: Bio-grouted Pervious Concrete Pile Alternativementioning

confidence: 99%

Bio-grouting to enhance axial pull-out response of pervious concrete ground improvement piles

Lin¹,

Suleiman

Jabbour³

et al. 2018

Can. Geotech. J.

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Bio-grouting is an environmentallly friendly, sustainable, and low-cost ground improvement technique, which mainly utilizes microbial-induced carbonate precipitation. Previous large-scale applications of MICP have encountered practical difficulties including bio-clogging, which resulted in a limited zone of cemented soil around injection points. The research presented in this paper focuses on evaluating the feasibility of cementing a limited soil zone surrounding permeable piles using MICP bio-grouting to improve the mechanical response of permeable piles under axial pull-out loading. Two instrumented pervious concrete piles (test units), one with and one without MICP bio-grouting, were subjected to pull-out loading at the Soil-Structure Interaction Facility at Lehigh University. The pervious concrete pile served as an injection point during the MICP bio-grouting. The mechanical responses of the test units and surrounding soil were analyzed, along with shear wave (S-wave) velocities, moisture, and CaCO3 contents of the surrounding soil. The results presented in this paper demonstrate that the limited MICP-improved zone, extending a radial distance of approximately 102 mm around pervious concrete piles, improved the load–displacement response, load transfer, and pile capacity under pull-out loading. The ratios between ultimate loads of the test units with and without MICP bio-grouting were 4.2. The average shaft resistance along the pile with MICP bio-grouting was up to 2.8 times higher than that of the pile without bio-grouting.

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“…Alternatively, researchers have been attempted to address the problems with driven piles by making the piles permeable, so that vertical drainage paths could be created with minimal disturbance to the surrounding soil. For example, pervious concrete has been used to cast the piles (Suleiman et al 2014;Ni et al 2016). However, the strength of pervious concrete could limit the application of this new type of piles (Obla 2010).…”

Section: Introductionmentioning

confidence: 99%

Laboratory investigation of pore pressure dissipation in clay around permeable piles

Mangalathu

Mei

et al. 2018

Can. Geotech. J.

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Excess pore-water pressures induced by pile driving could have a detrimental effect on a project, especially on the construction sequence and ground settlement. Measures that can effectively accelerate dissipation of pore pressures are therefore valuable. One way to reduce the pore pressure is the use of permeable piles. This paper presents a series of model-scale laboratory tests conducted on piles with drainage holes around the pile circumference. It is found that permeable piles could accelerate soil consolidation significantly, and the beneficial effects are more apparent for group pile tests. An approximate influencing zone of permeable piles was derived in this study based on the experimental observations.

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Behavior and Soil–Structure Interaction of Pervious Concrete Ground-Improvement Piles under Lateral Loading

Cited by 34 publications

References 18 publications

Clogging of pervious concrete pile caused by soil piping: an approximate experimental study

Clogging of pervious concrete pile caused by soil piping: an approximate experimental study

Bio-grouting to enhance axial pull-out response of pervious concrete ground improvement piles

Laboratory investigation of pore pressure dissipation in clay around permeable piles

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