Sustainable binders for soil stabilisation

Jegandan, S.; Líška, Martin; Osman, Abdalla A.; Al‐Tabbaa, Abir

doi:10.1680/grim.2010.163.1.53

Cited by 86 publications

(40 citation statements)

References 12 publications

(9 reference statements)

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“…Also the production of cement results in the highest carbon emission. For these reasons, there is a tendency worldwide to reduce the cement content (to as low as 3%) by addition of binders such as cement-by-pass dust, lime, fly ash, slag, rice husk and incinerator ash (Jegandan et al 2010;Hughes and Glendinning 2004;Bujulu et al 2007). Based on this a preliminary investigation was made to use cementby-pass-dust (CBPD) to stabilize sabkha soils instead of cement.…”

Section: Practical Implication Of Using Cementmentioning

confidence: 99%

Cement-Stabilization of Sabkha Soils from Al-Auzayba, Sultanate of Oman

Mohamedzein

Al-Rawas

2011

Geotech Geol Eng

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Sabkha soils are salt-bearing formations that are formed in arid regions. In their in situ states the sabkha soils have high compressibility and low shear strength. These soils are also heterogeneous and their properties depend on the type and amount of salt present. Thus, these soils are not suitable for support of infrastructures without the risk of high settlement and/or bearing capacity failure. This paper investigates the possibility of using cement to improve the shear strength of sabkha soils for possible use as a foundation-bearing soil. The sabkha soil used in this study is a sandy sabkha obtained from the coastal plains at Al-Auzayba, Sultanate of Oman. Cement was added in percentages of 2.5, 5, 7.5 and 10%, by dry weight of soil. The soil-stabilizer mixers were allowed to cure for 7, 14 and 28 days. Laboratory tests such as compaction, unconfined compression, consolidated undrained triaxial and durability tests were performed to measure the engineering characteristics of the stabilized material. The results showed substantial improvements in the shear strength of the sabkha-cement mixtures and the mixtures are also durable with small weight loss after 12 wetting/ drying cycles. Thus, cement can be used to improve the shear strength of sabkha soils. Furthermore, the effective stress path and the tress-strain relation of the sabkha-cement mixtures follow trends similar to those of cemented calcareous soils.

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Section: Practical Implication Of Using Cementmentioning

confidence: 99%

Cement-Stabilization of Sabkha Soils from Al-Auzayba, Sultanate of Oman

Mohamedzein

Al-Rawas

2011

Geotech Geol Eng

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“…It is interesting to note that if the E 50 /Rc ratio increases with resistance, then this observation tends to prove that the ratio Rc (site)/Rc (laboratory) is about 0.5 (Szymkiewicz 2011). However, two more recent studies (Jegandan et al 2010;Ganne et al 2010) show that the stiffness of the material seems to evolve linearly with the Rc until a certain resistance then the rigidity tends to a constant value, whatever Rc obtained.…”

Section: Introductionmentioning

confidence: 96%

Effect of Treatment with Cement on the Mechanical Characteristics of Silt from Telagh Region of Sidi Belabes, Algeria

2015

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In Algeria the use of soil treated with hydraulic binder is not responded because the very few sites already completed have not experienced feedback to confront the knowledge on the subject. Most soils in their natural condition lack the strength, dimensional stability and durability required for building. These inherent deficiencies may be overcomed through a process of stabilization by mechanical compaction and addition to the soil matrix of chemical binders, such as cement or lime. High water content and low workability of local soils have often caused difficulties for highway construction projects. The addition of a few percentages by weight of cement has shown its effectiveness towards better control of workability during compaction and significant cost savings over removal and replacement of backfill material in some projects (Sariosseiri and Muhunthan in Eng Geol 104: [119][120][121][122][123][124][125] 2009). This paper is focused on understanding the compaction characteristics and mechanical properties of compacted cement stabilised soil mixtures. We opted to base our work on a laboratory study, conducting soil-cement mixtures.A soil area Telagh was treated with cement varying each time the quantities of cement and water, in order to observe the influence of dosage and the amount of water present in the mixture on compressive strength and the stiffness of the material. In this study, natural silty soil extracted from the locality Guetna of region ''Telagh'' was characterized and mixed with cement to prepare compacted cylindrical samples to standard Proctor (OMC) of different cement doses and different water-cement ratios. After curing, the hardened samples were tested and their compressive strength was investigated for different duration. Another important parameter is considered in this study is the extent of the permeability of the soils treated with cement, as our material can be used for building dams and dykes. The results of the first part of this study showed the influence of cement content on compaction characteristics and water permeability of stabilized Guetna soil. The results from the second part of this study showed the effect of time lag, watercement ratios, and dosage of cement on the compressive strength and elastic modulus of the investigated. Salient conclusions of the study are (a) compaction characteristics of soils are affected by the addition of cement, in particular the water content that increases with high doses of cement, (b) compressive strength increased with dosage of cement varying to 2 % at 6 %, even at lower values of cement doses, (c) in contrast, the water contact on soil leads to a marked decrease in compression strength, (d) the results also indicated that the water permeability decrease when le cement content increased, (e) the elastic modulus defined at 50 % of peak strength is determined for studied material at different binder contents and different curing times, (f) the development of elastic modulus is in accordance with compressive strength. A quantitative corre...

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“…With the addition of cement to soil samples, the strength of the soil composition increases [13]. That is because cement reacts with water to form bonds within the soil configuration [10]. The elasticity of soil samples rise as the chemical bond between the cement, water and soil is formed in the exothermal reaction of hydration [7].…”

Section: Discussionmentioning

confidence: 99%

Shrinkage Module of Soil Samples with Different Cement Content

Sabry¹,

Mandalawi²,

Sabry³

2017

The Open Access Journal of Science and Technology

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Abstract. The differences in soil's body mass during shrinkage over time have changes in soil physical properties which provide an important reason to check the design of underground foundations in expansive soils. In this paper, a state-of-art of the soil heat stress-strain relationship prediction methods is checked using soil engineering laboratory experiments and Matlab R2013b numerical modelling. The shrinkage of soils with different cement content of (0%, 2%, 4%, 6% and 8%) with the same water content of 20 percent in room temperature for 24 hours, are critically reviewed in terms of their predictive shrinkage along with their strengths and flexural behaviour. The review highlights the prediction methods present to determine the effect of heat stress on the shrinkage of soil samples with different cement content after classifying the soils into clay, silt and sand depending on their particle size using sieve and hydrometer experiments. The results of the soil engineering laboratory experiments showed that as the cement content increases, the shrinkage of soil decreases as a result of increased elasticity in soil. The numerical analysis using finite element method in Matlab R2013b shows that as the cement content increases the displacement in the soil sample decreases and that the soil sample with 8% cement content has more resistance to shrinkage and less displacement than the soil with 6% cement, which has less resistance to heat stresses and more displacement.

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Sustainable binders for soil stabilisation

Cited by 86 publications

References 12 publications

Cement-Stabilization of Sabkha Soils from Al-Auzayba, Sultanate of Oman

Cement-Stabilization of Sabkha Soils from Al-Auzayba, Sultanate of Oman

Effect of Treatment with Cement on the Mechanical Characteristics of Silt from Telagh Region of Sidi Belabes, Algeria

Shrinkage Module of Soil Samples with Different Cement Content

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