Stabilization of Clayey Silt Soil Using Small Amounts of Petrit T

Al-Jabban, Wathiq; Knutsson, Sven; Laue, Jan; Al‐Ansari, Nadhir

doi:10.4236/eng.2017.96034

Cited by 11 publications

(14 citation statements)

References 37 publications

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“…The soil and the binders as well as the specimen preparation and testing methodology are described in more detail in [18,29,30].…”

Section: Methodsmentioning

confidence: 99%

“…Workable soil is a term used to explain how the soil can be easily excavated, loaded, transported, compacted, etc. [18]. The immediate reduction in soil moisture content and plasticity index transfer the soil from being plastic to more granular soil, which facilitates higher workability.…”

Section: Water Content and Densitymentioning

confidence: 99%

“…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%

“…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].…”

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confidence: 99%

“…Prior to the PSD test, both stabilized and unstabilized soil specimens were air-dried and ground through 0.5-0.063 mm sieves. Then, about 5 g of that passing from 0.063 mm sieve was mixed with sufficient distilled water and subjected to the PSD analyzer (CILAS 1064).The soil and the binders as well as the specimen preparation and testing methodology are described in more detail in [18,29,30].…”

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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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“…The soil and the binders as well as the specimen preparation and testing methodology are described in more detail in [18,29,30].…”

Section: Methodsmentioning

confidence: 99%

Section: Water Content and Densitymentioning

confidence: 99%