The effects of additives and curing conditions on the mechanical behavior of a silty soil

Altun, Selim; Sezer, Alper; Erol, Alper

doi:10.1016/j.coldregions.2008.11.007

Cited by 27 publications

(14 citation statements)

References 9 publications

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“…This implies that the fly ash inclusion contributes to the material strength increase and counteracts the frost action. Similar results were reported by Altun et al[5] for fly ash stabilized slit samples. The better antifrost performance of the cementfly ash-treated samples arises partly from the hollow spherical nature of the fly ash particles.…”

supporting

confidence: 92%

“…The demonstrated regionspecific properties likely influence the stabilization process and lead to a design different from other common silty soils. Previous studies have also shown that the stabilization and antifrost performance are dependent on the choices of the silty soils used [5,7]. Similar dependence may occur to the Yellow River alluvial silt.…”

Section: Introductionmentioning

confidence: 72%

“…A solution for this concern is to stabilize the silt using cementitious additives and examine the performance of the treated silt counteracting the frost action. Altun et al [5] stabilized sandy and clayey silt of low plasticity by using Class C fly ash and cement and subjected the stabilized specimens to up to seven freezing and thawing cycles. The results showed that 30% fly ash and 2% cement are the optimum dosages with respect to material strength gain, and samples with 10% fly ash and 2% cement exhibit favorable antifrost performance.…”

Section: Introductionmentioning

confidence: 99%

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Strength and Stiffness of Stabilized Alluvial Silt under Frost Actions

Wang

Deng

Yang

2017

Advances in Materials Science and Engineering

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The Yellow River alluvial silt was stabilized into pavement base materials for cold regions. The stabilizing additives were cement, fly ash, and lime, which were included in a range of combinations and dosages when mixed with the silt. Freeze-thaw cyclic impacts were conducted on the treated samples to assess materials performance of withstanding the frost actions. The tests were conducted on samples cured for 7 days to up to 180 days. Test results show that the cement-fly ash-treated samples outperform the other two stabilization categories with respect to material strength and stiffness developed under both normal and frost conditions. Under the normal conditions, the material unconfined compressive (UC) strength rises to 3.0 MPa on day 28 depending on the cement and fly ash dosage used. If subjected to frost actions, the fly ash inclusions warrant a residual UC strength value of 1.3 MPa and above. The antifrost performance of the cement-fly ash-treated samples is related to thermal buffer capacity of the fly ash particles. Water adsorption and material soundness results agree with the strength and stiffness development. An optimal dosage was 3-6% for the cement and 0.3 for cement to fly ash mass ratio.

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supporting

confidence: 92%

Section: Introductionmentioning

confidence: 72%

Section: Introductionmentioning

confidence: 99%

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Strength and Stiffness of Stabilized Alluvial Silt under Frost Actions

Wang

Deng

Yang

2017

Advances in Materials Science and Engineering

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“…As an example, the durability of a natural silt soil stabilized with Class C fly ash and cement was examined (Altun et al 2009); the effect of lime and cement inclusion in estuarine silt has been studied (Jauberthie et al 2010). The results show that an increase in the UCS and CBR values of silt can occur when mixed with lime and cement.…”

Section: Introductionmentioning

confidence: 97%

Strength of Cement Treated Piedmont Residual Silty Soils

Amir-Faryar¹,

Suter

Finnen

2017

Geotech Geol Eng

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Piedmont residual soils form a strip that extends from Alabama to New Jersey and comprise much of Virginia, Georgia, and the Carolinas. Thus, a better understanding of their strength properties is of paramount importance. One of the hallmarks of the soils within the Piedmont region is its silty nature. Although it is usually a common practice to use lime treatment for highly plastic clayey soils, no such agreement exists on the type of soil stabilization when dealing with fine-grained silty soils. Hence, the effects of cement stabilization on the strength of residual silt were studied. California bearing ratio (CBR) and unconfined compressive strength (UCS) testing was conducted. The study showed that cement can react with the silty soil and the addition of cement can lead to further increase in strength. Equations were developed correlating liquid limit to CBR as well as cement content to UCS. A multi-variable model function was also proposed correlating CBR and cement content to UCS of treated soils, and equations were developed for silty soils with standard proctor CBR samples and 95% degree of compaction as well as modified proctor CBR samples and 97% degree of compaction. The accuracy of the proposed function was validated using data developed for cement treated lateritic sandy soils.

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“…Understanding the heat and mass transfer processes in these areas is highly important for solving civil engineering and infrastructurerelated problems. Previous studies have shown that mechanical and physical properties of soil can be changed during the freezing-thawing process, which may negatively affect the subgrade function (Zaimoglu, 2010;Aubert and Gasc Barbier, 2012;Oztas and Fayetorbay, 2003;Cui et al, 2014;Kalkan, 2009;Graham and Au, 1985;Yarbasi et al, 2007;Altun et al, 2009;Angin et al, 2013;Olgun, 2013;Simonsen and Isacsson, 2001). Materials incorporating fibers, conventional elements, enzymes, and polymeric resins can be used for mitigation of these negative effects on soils subjected to freezing-thawing.…”

Section: Introductionmentioning

confidence: 99%

Frost depth prediction for seasonal freezing area in Eastern Turkey

Orakoğlu

Liu

Tutumluer

2016

Cold Regions Science and Technology

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This paper presents the results of an investigation relative to the prediction of frost depths of seasonal freezing area in eastern Turkey. The Stefan equation and a modified Berggren equation are compared and utilized, and the computed results are compared with actual observed data. Also, the different harmful effects of freezing-thawing on highways in eastern Turkey are elucidated, supplemented with case studies. Based on this, the coldest areas are defined and a freezing depth contour map with the region's transportation network is produced. Some recommendations for the design and maintenance of subgrades in cold regions are provided.

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The effects of additives and curing conditions on the mechanical behavior of a silty soil

Cited by 27 publications

References 9 publications

Strength and Stiffness of Stabilized Alluvial Silt under Frost Actions

Strength and Stiffness of Stabilized Alluvial Silt under Frost Actions

Strength of Cement Treated Piedmont Residual Silty Soils

Frost depth prediction for seasonal freezing area in Eastern Turkey

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