Effect of polymers on swelling potential of expansive soils

Yasrobi, S. Shahaboddin; Al-Rawas, A. D.

doi:10.1680/grim.2009.162.3.111

Cited by 45 publications

(24 citation statements)

References 3 publications

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“…Expansive soils can be stabilized using mechanical and chemical treatment. Chemical treatment majorly involves the inclusion of chemical admixtures (e.g., polymers, cement, and lime) to the soil [6][7][8][9][10]. The mechanical approach includes the compaction of the soil with the addition of the strengthening material.…”

Section: Introductionmentioning

confidence: 99%

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Experimental Study on the Influence of Polypropylene Fiber on the Swelling Pressure Expansion Attributes of Silica Fume Stabilized Clayey Soil

Tiwari

Satyam

2019

Geosciences

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Expansive soil shows dual swell-shrink which is not suitable for construction. Several mitigating techniques exist to counteract the problem promulgated by expansive clayey soils. This paper explored the potential mecho-chemical reinforcement of expansive clayey soil to mitigate the effect of upward swelling pressure and heave. The polypropylene fiber is randomly distributed in the soil for mechanical stabilization, and the industrial residual silica fume is used as a chemical stabilizer. The experimental analysis was made in three phases which involved tests on mechanically-reinforced expansive soil, using randomly distributed polypropylene fibers with different percentages (0.25%, 0.50%, and 1.00%), and which were 12 mm length. The second phase of experiments was carried out on chemical stabilized expansive soil with different percentages (2%, 4%, and 8%) of silica, and the next phase of the experiment focused on the combination of mecho-chemical stabilization of the expansive soil with different combinations of silica (i.e., 2%, 4%, and 8%) and polypropylene fibers (i.e., 0.25%, 0.50%, and 1.00%). Maximum dry density (MDD), optimum moisture content (OMC), liquid limit (LL), plastic limit (PL), plastic index (PI), grain size, and constant volume swelling pressure tests were performed on unreinforced and reinforced expansive soil, to investigate the effects of polypropylene fiber and silica fume on the engineering properties of expansive clayey soil. The experimental results illustrate that the inclusion of polypropylene fiber has a significant effect on the upward swelling pressure and expansion property of expansive soil. The reduction in the upward swelling pressure and expansion is a function of fiber content. These results also indicated that the use of silica fume caused a reduction in upward swelling potential, and its effect was considerably more than the influence of fiber.

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Section: Introductionmentioning

confidence: 99%

“…Cement is specially used to improve the shearing strength of the expansive soil, and is thus preferred as a chemical additive to expansive soil if an improvement of their strength is required as a parameter [6,7,25]. The chemical stabilization of expansive soils is a substantiated quick-fix method in the short term.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Influence of Polypropylene Fiber on the Swelling Pressure Expansion Attributes of Silica Fume Stabilized Clayey Soil

Tiwari

Satyam

2019

Geosciences

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“…polymers, resins and sulfonated oils) categories, both of which have been well documented in the literature (e.g. Estabragh et al, 2013Estabragh et al, , 2014Georgees et al, 2015;Jha and Sivapullaiah, 2016;Mirzababaei et al, 2009;Soltani et al, 2017b). The mechanical technique often involves the placement of randomly or specifically engineered reinforcements (e.g.…”

Section: Introductionmentioning

confidence: 99%

Consistency limits and compaction characteristics of clay soils containing rubber waste

Soltani

Deng

Taheri

et al. 2019

Proceedings of the Institution of Civil Engineers - Geotechnica

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The aim of the study reported in this paper was to develop practical correlative models capable of predicting the compaction characteristics of clay soils blended with rubber from waste vehicle tyres. Four different clay soils, ranging from intermediate to high plasticity, were adopted for the test programme and each was blended with four different percentages of ground rubber waste. The test programme consisted of cone penetration (consistency limits) and standard Proctor compaction tests. As a result of ground rubber inclusion, the consistency limits and compaction characteristics all exhibited a linear decreasing trend with increase in rubber content. The rate of decrease, however, was greater for the high-plasticity clays. Simple correlative models, linking the compaction characteristics to the consistency limits, were suggested and validated by statistical techniques. The proposed models provide a practical procedure towards predicting the compaction characteristics of ground rubber-clay blends without the hurdles of conducting laboratory compaction tests, and thus can be implemented in practice for preliminary assessments.

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“…Stabilization 625 of soils can be done by two main ways, chemical and mechanical techniques. Chemical techniques mainly include the addition of chemicals such as (cement, lime and polymers) to the soil, thus altering the soil fabric into a coherent matrix of restricted swelling [5][6][7][8]. The mechanical approach uses soil compaction with the reinforcements support.…”

Section: Introductionmentioning

confidence: 99%

Stabilization of Expansive Soils Using Polypropylene Fiber

Hussein

Ali

2019

Civ Eng J

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Current research main aim is to study the effect of adding polypropylene fiber (PPF) on the behavior of expansive soil to reduce the swelling as percentage (0.5, 1 and 2%) of the weight of dry soil. Expansive soil used in this research was prepared artificially by mixing Ca-based bentonite from geological survey and mining company with sandy soil brought from Karbala city as percentage 80% bentonite to 20% sand of dry weight. Multiple laboratory tests have been carried are (Unconfined Compression Test, One-Dimensional Consolidation Test, Swelling Test, Sieve Analysis and Cycle Swell Shrink Test). A conventional odometer cell was modified to allow the study of swell- shrink cycle test to be carried out under controlled temperatures and surcharge pressure. The results showed that the increase in percentage of (PPF) led to decrease the swelling and to increase the unconfined compression strength. The wetting and drying results of (PPF) showed that with continuous cycles the effect of (PPF) keeps on reducing the swelling and the 2% of (PPF) produces less ratio of swell - shrink, which has obtained higher than 57 % in the improvement factor of swell and shrink.

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Effect of polymers on swelling potential of expansive soils

Cited by 45 publications

References 3 publications

Experimental Study on the Influence of Polypropylene Fiber on the Swelling Pressure Expansion Attributes of Silica Fume Stabilized Clayey Soil

Experimental Study on the Influence of Polypropylene Fiber on the Swelling Pressure Expansion Attributes of Silica Fume Stabilized Clayey Soil

Consistency limits and compaction characteristics of clay soils containing rubber waste

Stabilization of Expansive Soils Using Polypropylene Fiber

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