Experimental Investigation of Unconfined Compression Strength and Stiffness of Cement Treated Salt-Rich Clay

Dingwen, Zhang; Fan, Li; Liu, Songyu; Deng, Youqian

doi:10.1080/1064119x.2012.690826

Cited by 48 publications

(25 citation statements)

References 11 publications

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“…For cement treatment, the soil strength improvement was noticeable during the first 28 days of curing, while it was more pronounced for Petrit T at longer curing periods (90 days). This trend is consistent with previous studies [14,15,22,23,35]. Figure 11 shows the relationship between the liquidity index (LI) and the unconfined compressive strength.…”

Section: Soil Strengthsupporting

confidence: 91%

“…A similar trend for a change in the behavior of the stress-strain curves has been observed by other researchers for various binder types [14,15,31,39]. Figure 14 shows the axial failure strain versus curing time for untreated and treated soil.…”

Section: Stress-strain Behaviorssupporting

confidence: 82%

“…The benefit of using cement in the soil stabilization field has been extensively investigated [11][12][13][14][15][16][17][18]. In addition, the possibility of using industrial by-product materials to improve soft soils has been Figure 1 shows the immediate effect of adding various amounts of binder (cement or Petrit T) on the soil consistency limits.…”

Section: Introductionmentioning

confidence: 99%

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A Comparative Evaluation of Cement and By-Product Petrit T in Soil Stabilization

et al. 2019

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This study presents a comparison between the effectiveness of adding low binder amounts of industrial by-product Petrit T as well as cement to modify and improve fine-grained soil. Binder amount was added by soil dry weight; cement at 1%, 2%, 4% and 7% and Petrit T at 2%, 4% and 7%. The unconfined compressive strength (UCS) was used as an indicator of soil strength. In addition, the consistency limits, laser particle size analysis, and pH tests were also conducted on the treated soil. The samples were cured at 20 • C for different periods from 7 to 90 days before testing. Results indicate that cement is more effective at improving the physical and engineering properties of the treated soil. Soil plasticity index decreases after treatment and with time. Liquidity index and the water content to plastic limit ratio are introduced as new indices to define the improvement in the workability of treated soil. Soil particle size distribution is changed by reducing the clay size fraction and increasing the silt size fraction after treatment. The findings confirm that adding small binder contents improve soil properties, which subsequently reduce the environmental threats and costs that are associated with using a high amount of binder. Enhanced soil strengths, reduced soil plasticity and swelling potential are the most desirable outcomes from the treatment. For certain soil stabilization applications, the cost of the binder itself could result in a considerable saving in the overall costs of the project [24]. Petrit T is a waste product from sponge iron production [18]. It is considered a cheap by-product material [25]. Therefore, in order to decrease the environmental impact and costs, finding new binders as alternatives to Portland cement is important. Thus, there is a need to compare the effectiveness of using cement and by-product Petrit T as stabilizing agents.This paper presents a comparative evaluation between using Portland cement and by product Petrit T to enhance the physical and mechanical properties of sandy clayey silt soil. An extensive experimental program was carried out in this study, including tests of unconfined compressive strength, laser particle size, consistency limits, and pH tests, using various binder amounts and curing periods. Materials and MethodsThe samples used in this study were prepared from a natural soil from Gothenburg, south west coast of Sweden. The soil consists of 55% silt, 29% fine sand and 16% clay. The natural water content is 30%, the liquid limit 37% and the plastic limit 20%. The optimal moisture content is 12%, and the proctor density is 1.97 t/m 3 . The ignition test showed that the soil has 4% organic content. Therefore, according to the Swedish standard, natural soil is classified as sandy clayey silt (saclSi) with low organic content [26][27][28].Natural soil was firstly homogenized and then mixed with Petrit T as well as the cement in various percentage from 1 to 7% as dry mass of soil and cured for 7, 14, 28, 60 and 90 days before testing.Unconfined compressive tests (U...

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Section: Soil Strengthsupporting

confidence: 91%

Section: Stress-strain Behaviorssupporting

confidence: 82%

Section: Introductionmentioning

confidence: 99%

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A Comparative Evaluation of Cement and By-Product Petrit T in Soil Stabilization

et al. 2019

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“…Thus the maximum strength achieved in 90 days is only slightly more than 28 day strength. These observations are in good agreement with findings of Dingwen et al (2013), Verastegui Flores et al (2010, and Cokca and Yilmaz (2004). The condition of curing is very important in strength gain of cement containing material as lack of moisture would stop hydration process and therefore the strength gain (Neville 1995).…”

Section: Unconfined Compression Testsupporting

confidence: 87%

Strength Characterization of Sand-Bentonite Mixtures and the Effect of Cement Additives

Iravanian

Bilsel

2014

Marine Georesources & Geotechnology

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This paper studies the strength properties of compacted sand-bentonite landfill barrier material with and without cement addition at different periods of aging. Test results indicated that strength values both in compression and tension increased up to threefold in cement added samples, as well as enhancing the ductile behavior. Cubic modulus, described as the slope of the elastic portion of the cubic compressive stress versus strain curves is determined along with initial and flexural moduli, and all the strength and moduli values were correlated with each other. Finally, it is concluded that there is a marked improvement in strength properties and moduli with cement inclusion and that the effect of aging has been very effective.

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“…Cement stabilisation is one among the frequently used methods. Numerous studies have been conducted on the strength and stiffness properties of marine clay treated with high cement content (>10%) (Panda and Rao 1998;Yu et al 1997;Miura, Horpibulsuk, and Nagaraj 2001;Lorenzo and Bergado 2004;Lorenzo and Bergado 2006;Consoli et al 2011;Horpibulsk et al 2011;Yoon, Kim, and Jeon 2011;Dingwen et al 2013;Xiao, Lee, and Chin 2014;Zhang et al 2014). In general, it can be concluded that the primary and secondary cementitious materials formed during stabilization will increase the mechanical strength of the marine clay (Kamruzzaman, Chew, and Lee 2009).…”

Section: Introductionmentioning

confidence: 99%

Critical State Parameters of Dredged Chennai Marine Clay Treated with Low Cement Content

Subramaniam

Sreenadh

Banerjee

2015

Marine Georesources & Geotechnology

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The present paper discusses the stress-strain behaviour and critical state parameters of dredged Chennai marine clay stabilized with low cement content (2.5-10%). Series of one dimensional consolidation test and consolidated undrained triaxial tests are performed on the cement stabilized dredged Chennai marine clay to evaluate the critical state parameters (λ, κ, M, Г, N) for varying cement contents and curing days. The results show that the slope of the critical state line Downloaded by [New York University] at 05:38 14 July 20152 M increases with an increase in cement content. The parameter λ for treated marine clay increases up to a cement content of 7.5% followed by a reduction. The parameter κ decreases with the addition of cement content. Finally empirical formulations are proposed to predict the critical state parameters as the functions of cement contents and curing days.

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Experimental Investigation of Unconfined Compression Strength and Stiffness of Cement Treated Salt-Rich Clay

Cited by 48 publications

References 11 publications

A Comparative Evaluation of Cement and By-Product Petrit T in Soil Stabilization

A Comparative Evaluation of Cement and By-Product Petrit T in Soil Stabilization

Strength Characterization of Sand-Bentonite Mixtures and the Effect of Cement Additives

Critical State Parameters of Dredged Chennai Marine Clay Treated with Low Cement Content

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