Strength of lime-cement stabilized tropical lateritic clay contaminated by heavy metals

Saeed, Khitam Abdulhussein; Kassim, Khairul Anuar; Nur, Hadi; Yunus, Nor Zurairahetty Mohd

doi:10.1007/s12205-013-0086-6

Cited by 45 publications

(23 citation statements)

References 10 publications

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“…On the one hand, Cd 2+ , Ni 2+ , Zn 2+ , Pb 2+ , and Co 2+ could replace Ca 2+ , and Cr 3+ , Ti 3+ , Mn 3+ , Si 4+ , and Fe 3+ can replace Al 3+ in AFt; on the other hand, , and Cr 2 O 7 2− can get inside the AFt lattice and then stabilize in the AFt phases. Tashiro et al [48][49][50]found that heavy metal oxides and hydroxides could promote the formation and crystal growth of ettringite and produce some changes in microstructure and Cr 2 O 3 and Cu(OH) 2 exert a considerable influence. Similar to AFt, Ca 2+ , Al 3+ , CO 3 2− , and SO 4 3− in AFm phases are easy to be replaced by other ions, and AFm have a more stable structure than AFt.…”

Section: C-s-h C-s-h Is a Type Of Amorphous Microporousmentioning

confidence: 99%

Review on Cement Stabilization/Solidification of Municipal Solid Waste Incineration Fly Ash

Fan

Wang

Zhang

2018

Advances in Materials Science and Engineering

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Municipal solid waste incineration (MSWI) fly ash must be treated properly prior to being disposed in the security landfill due to its serious pollution toxicity. Nowadays, lots of studies have demonstrated that cement-based stabilization/solidification could reduce the toxicity pollution effectively by encapsulating the heavy metals into cement matrix, which leads to greater capacity and weight. This paper compares and discusses the MSWI fly ash treatment with the mostly used matrix materials such as Portland cement, phosphate cement, aluminate cement, and alkaline activated cement. Moreover, immobilization mechanism introduced by the interaction between the MSWI fly ash and hydrated cement matrix materials, such as the physical cementing effect, adsorption, isomorphous replacement, and complex precipitation, was explored in depth. The paper also pointed out some reasonable development directions for cement-based stabilization/solidification technology to improve the effectiveness and application of cement-based stabilization/solidification technology.

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Section: C-s-h C-s-h Is a Type Of Amorphous Microporousmentioning

confidence: 99%

Review on Cement Stabilization/Solidification of Municipal Solid Waste Incineration Fly Ash

Fan

Wang

Zhang

2018

Advances in Materials Science and Engineering

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“…Portland cement was also used with other stabilizing materials to improve the soil engineering properties. Lime is used with cement to improve the soil strength and reduce the swelling and settlement (Amu et al, 2008;Joel & Agbede, 2010;Lemaire et al, 2013;Mousavi & Leong Sing, 2015;Riaz et al, 2014;Saeed et al, 2015;Sharma et al, 2018;Umesha et al, 2009;Wei et al, 2014). Nayak & Sarvade (2012) used cement and quarry dust to improve the shear strength and hydraulic features of lithomarge clay.…”

Section: Introduction and Past Studiesmentioning

confidence: 99%

Geotechnical and other characteristics of cement-treated low plasticity clay

Alkiki¹,

Abdulnafaa²,

Aldaood³

2021

S&R

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This research work examines the utilization of cement in order to improve low plasticity clay soil. The soil samples treated with 2, 4 and 6% cement percents and cured for different curing times extended to 90 days. Laboratory investigations include unconfined compression, indirect tensile, gas permeability and microstructural tests, which were conducted on the tested samples. The soil-water retention behavior has been also investigated. The test results showed that the cement addition improved both the compressive and tensile strength properties of soil specimens. These strength properties were also increased with curing times. pH and electrical conductivity values were good indicators for the enhancement in the strengths properties. The results of micro structural tests illustrated that the natural soil specimens contain voids and the open structure. Further, these tests showed the cementation of soil grains and filling the voids among soil grains with cementing compounds. Gas permeability and soil-water retention behavior of soil specimens are strongly related to the variations in the soil structures. Further examination illustrated that in the case of low cement content, the pore size distribution (PSD) and the efficiency of gas permeability are more sensitive to curing times.

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“…Laterites are readily available, extensively distributed, and cheap natural earth materials that can be potentially used as raw materials for synthesizing inorganic nanomaterials. In contrast to many disputes about the definition of laterites, laterites can be simply explained as highly weathered natural clay materials with high concentrations of iron or aluminum oxides [26,27]. Table 1 shows the physical and chemical properties of natural laterites.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Hematite Nanodiscs from Natural Laterites and Investigating Their Adsorption Capability of Removing Ni2+ and Cd2+ Ions from Aqueous Solutions

et al. 2020

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In this work, disc-like hematite (Fe2O3) nanoparticles were prepared using a readily available inexpensive earth material, ferruginous laterite, via a low-cost synthesis route. Prepared hematite nanoparticles were characterized using X-Ray diffraction (XRD), inductively coupled plasma mass spectroscopy (ICP-MS), particle size analyzer (PSA), Fourier transform infrared (FT-IR) spectroscopy, scanning electron microscopy (SEM), and nitrogen adsorption-desorption analyzer. The performance of hematite nanoparticles was evaluated as a heavy metal ion adsorbent. Batch adsorption experiments were conducted to study the adsorption behaviour of Ni2+ and Cd2+ ions as a function of the amount of adsorbent, contact time, and pH. Adsorption data fitted to the linearized Langmuir and Freundlich kinetic models were compared and discussed. The correlation coefficient (R2) was used to determine the best fit kinetic model. Our data fitted the Langmuir kinetic model well and the highest adsorption efficiencies were found to be 62.5 mg/g for Ni2+ and 200 mg/g for Cd2+, respectively. Due to high surface area, pore volume with active sites, and sorption capabilities, hematite nanoparticles can be used as efficient and economical nano-adsorbents for the removal of Ni2+ and Cd2+ ions from industrial wastewater.

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Strength of lime-cement stabilized tropical lateritic clay contaminated by heavy metals

Cited by 45 publications

References 10 publications

Review on Cement Stabilization/Solidification of Municipal Solid Waste Incineration Fly Ash

Review on Cement Stabilization/Solidification of Municipal Solid Waste Incineration Fly Ash

Geotechnical and other characteristics of cement-treated low plasticity clay

Synthesis of Hematite Nanodiscs from Natural Laterites and Investigating Their Adsorption Capability of Removing Ni2+ and Cd2+ Ions from Aqueous Solutions

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