A new technique of strengthening soft soil under a strip footing by a granular trench reinforced with geogrid micro mesh

Dalaly, Nael K.; Al-Soud, Madhat Shakir; Jabar, Sahar S. Abdul

doi:10.1080/14488353.2015.1092633

Cited by 5 publications

(5 citation statements)

References 13 publications

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“…It was also observed that the obtained bearing capacity was three and five times higher, suggesting a good agreement of the results. Studies [13,16] used a higher value of c u /γB, showing that the strong material was used in the test program, while the obtained results showed smaller q u values as compared to this study.…”

Section: Resultsmentioning

confidence: 47%

“…When Geogrid Micro-Mesh (GMM) in soft clay was used to stabilize strip foundations, a significant improvement was observed at a depth ratio of 2, and a clear failure point was observed at H/B = 3. These results were obtained by applying a pressure greater than 85 kPa [16]. Using stone as a replaced material in a weak clay and reducing the water content, an overall increase of 15% occurred in q u .…”

Section: Introductionmentioning

confidence: 89%

“…[61] Small-scale testing SP SW + Geogrid -2B (23% increase) [13] Small-scale testing CL SP -0.8B [27] SIGMA/W Red clay Ottawa sand + geogrid 0.75B 2B [21] Small-scale testing + PLAXIS 2D SP-sea sand SP-river sand -1.4B [16] Small-scale testing CH SP + GMM -2B-3B [15] Small-scale testing CL RAP (reclaimed asphalt pavement)…”

Section: Introductionmentioning

confidence: 99%

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Experimental and Numerical Modeling of Bearing Capacity of Foundations on Soft Clay Stabilized with Granular Material

Malik

Alshameri

Jamil

et al. 2021

Int. J. of Geosynth. and Ground Eng.

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Over-excavation and replacement are the most commonly used ground modification techniques for shallow foundations. In soft soils, however, the extent of replacement by relatively larger (up to 19 mm) granular material was unknown. A total of 97 tests, consisting of 10 small and 87 numerical model tests, were carried out on two types of foundations, namely strip, and square. The width W and the depth of the replaced zone H were varied in each test and the ultimate bearing capacity q u was calculated. The experimental and numerical analyses were compared by computing q u from two methods (tangent intersection method (TIM) and 0.1B method). The improvement in q u was plotted as the dimensionless factor bearing capacity ratio (BCR) vs. depth ratio H/B for each foundation. A significant increase in BCR was observed from H/B of 1.5 to 4 for strip foundation and 2.5 to 3 for a square foundation. There was an insignificant increase in BCR after H/B of 4 and 3 for strip and square foundations, respectively. The width of the replacement was recommended as 2B for square foundations, while no value was suggested for strip foundation owing to a steady increase in the BCR. In addition, it has been observed that the depth of replacement is a major component in improving the bearing capacity compared to the width of replacement.

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Section: Resultsmentioning

confidence: 47%

Section: Introductionmentioning

confidence: 89%

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Experimental and Numerical Modeling of Bearing Capacity of Foundations on Soft Clay Stabilized with Granular Material

Malik

Alshameri

Jamil

et al. 2021

Int. J. of Geosynth. and Ground Eng.

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“…However, replacing the loose soil and using piles, especially if the layer depth is more than two meters, are usually expensive and time consuming especially for small structures. Therefore, the soil improvement is the most suitable solution, (Al-Murshdi, 2001 andDalaly et al, 2015).…”

Section: Research Objectivesmentioning

confidence: 99%

Improvement of Loose Granular Soil by Using Geogrid Reinforcement

Fakhraldin

2016

Kufa J. Eng.

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There are several uses of granular soils in civil engineering works such as but not limited to under foundations structures, subbase course of roads, unpaved roads and soil embankments. This research attempts to overcome the problems of low-quality (by means of strength) of granular soil by enhancing California Bearing Ratio (CBR) test by utilizing geogrid. The research aim's to investigate the potential benefits of using the geogrid to improve CBR of granular soil. The results of tests showed that the granular soil under study was inferior than the materials comply on class C of Iraqi specifications for granular soil material. On the other hand, using of geogrid type Tensar SS2 at 0.15H (where H the total thickness of granular material samples) improves extremely the CBR value of the granular soil as it is increased by about three times in comparison with untreated soil.

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“…The choice of selecting the most feasible technique of ground improvement depends principally on soil conditions, type of structure, settlement, and environmental considerations [16]. The creation of long-lasting structures and infrastructures is a major task for civil engineers.…”

Section: Introductionmentioning

confidence: 99%

Sustainable Improvement of Bentonite Clay Characteristics by Adding Pulverized Waste Glass

Al-Soud¹

2022

GEOMATE

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Bentonite clay is the soil that undergoes high volume changes (swelling) when its moisture content increases. The soil swelling may cause structural damage leading to damage to structural members like cracking in reinforced foundations and borders, curbs swelling, and eventually produces deformation indoors and on floors. In this study, Bentonite clay with expansive characteristics was used and mixed with various amounts of Pulverized waste glass PWG (0%, 5%, 10%, and 15%). Two types of PWG were prepared: fine glass (passing sieve No. 200) and coarse glass (passing sieve No. 2 mm). Laboratory experiments were performed on Bentonite specimens blended with different amounts of PWG. The results showed that the addition of 15% by Bentonite weight of 2 mm of PWG reduces the Atterberg limits considerably. Moreover, a noticeable reduction was observed in the Bentonite samples' free swell and swelling pressure after being treated with different amounts of PWG. The observed advantages of adding the PWG to Bentonite clay soil by decreasing the volume changes and enhancing the overall properties of Bentonite clay reflect the suitability of using PGW as a good soil stabilizer. Besides reducing the impact of waste glass on the environment due to its non-biodegradable nature.

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A new technique of strengthening soft soil under a strip footing by a granular trench reinforced with geogrid micro mesh

Cited by 5 publications

References 13 publications

Experimental and Numerical Modeling of Bearing Capacity of Foundations on Soft Clay Stabilized with Granular Material

Experimental and Numerical Modeling of Bearing Capacity of Foundations on Soft Clay Stabilized with Granular Material

Improvement of Loose Granular Soil by Using Geogrid Reinforcement

Sustainable Improvement of Bentonite Clay Characteristics by Adding Pulverized Waste Glass

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