Enhancing the Axial Compression Response of Pervious Concrete Ground Improvement Piles Using Biogrouting

Lin, Hai; Suleiman, Muhannad T.; Jabbour, Hanna Moussa; Brown, Derick G.; Kavazanjian, Edward

doi:10.1061/(asce)gt.1943-5606.0001515

Cited by 50 publications

(22 citation statements)

References 30 publications

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“…Currently, few investigations on PCP clogging have been reported (Lin et al 2016), although the issue of clogging has been considered since the technique was first proposed. There are two possible reasons for PCP clogging.…”

Section: R a F Tmentioning

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 Tmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

et al. 2018

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“…The SSI problem that was adopted in this investigation was adopted from Lin et al [32], where the effects of biogrouting on concrete piles embedded in sandy soils was investigated. In one experiment, a 76 mm-diameter concrete pile was embedded in sandy soil medium extending 1.1m by 1.1 m and 1.55 m deep.…”

Section: Validation Modelmentioning

confidence: 99%

Nonlinear Fea of Soil-Structure-Interaction Effects on Rc Shear Wall Structures

Saadi¹

2017

Proceedings of the 6th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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“…However, application of grouting along the shaft of foundation systems is not commonly used due to the complex injection technique and difficult quality control (Joer et al 1998;Thiyyakkandi et al 2013;Fattahpour et al 2015). To explore the possibility of biogrouting, Lin et al (2016a) presented an innovative grouted ground improvement pile alternative, bio-grouted permeable piles (pervious concrete piles), and this work focused on pile response when subjected to axial compression. This paper presents an innovative grouted ground improvement pile alternative, bio-grouted permeable piles (pervious concrete piles), and focuses on investigating their responses when subjected to axial pull-out loading.…”

Section: Introductionmentioning

confidence: 99%

“…The bio-grouting process offers a potential cost-effective and lower environmental-impact solution to enhance the response of ground improvement and foundation systems (Ivanov and Chu 2008;Suer et al 2009). Currently, most studies are on a biogrouting process that relies on the microbially induced carbonate precipitation (MICP) process to induce calcium carbonate (CaCO 3 ) precipitation (Stocks-Fischer et al 1999;Ivanov and Chu 2008;van Paassen 2009;Mortensen et al 2011;Burbank et al 2013;DeJong et al 2013;Lin et al 2016aLin et al , 2016b. The MICP grouting process can realize outcomes similar to cement-based grouting along the shaft and at the tip of permeable piles, while using a simple percolation process (Lin et al 2015(Lin et al , 2016a.…”

Section: Introductionmentioning

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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Enhancing the Axial Compression Response of Pervious Concrete Ground Improvement Piles Using Biogrouting

Cited by 50 publications

References 30 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

Nonlinear Fea of Soil-Structure-Interaction Effects on Rc Shear Wall Structures

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

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