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Environmental Earth Sciences

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01.02.2016 | Original Article

Effect of magnesium chloride solution on the physico-chemical characteristics of tropical peat

verfasst von: Nima Latifi, Ahmad Safuan A. Rashid, Aminaton Marto, Mahmood Md Tahir

Erschienen in: Environmental Earth Sciences | Ausgabe 3/2016

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Abstract

The stabilization of soils with additives is a chemical method that can be used to improve soils with weak engineering properties. Although the effects of non-traditional additives on the geotechnical properties of tropical soils have been subject of investigation in recent years, the effects of magnesium chloride (MgCl₂) on the macro- and micro-structural characteristics of peat soil have not been fully studied. This study investigates the effect of MgCl₂ on the physico-chemical characteristics of tropical peat. Unconfined compression strength tests were performed as an index of soil improvement in treated samples. In addition, the micro-structural characteristics of untreated and treated peat were investigated using various spectroscopic and microscopic techniques such as X-ray diffractometry, energy-dispersive X-ray spectrometry, field emission scanning electron microscopy, Fourier transform infrared spectroscopy, and Brunauer, Emmett, and Teller surface area analysis. From an engineering point of view, the results indicated that the strength of MgCl₂-stabilized peat improved significantly. The degree of improvement was approximately six times stronger than untreated peat, after a 7-day curing period. Additionally, the micro-structural study revealed that the stabilization process led to a few changes in the mineralogical, morphological, and molecular characteristics of the selected peat. The pores of the peat were filled by newly formed crystalline compounds known as magnesium aluminate hydrate (M–A–H).

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Titel: Effect of magnesium chloride solution on the physico-chemical characteristics of tropical peat
verfasst von: Nima Latifi
Ahmad Safuan A. Rashid
Aminaton Marto
Mahmood Md Tahir
Publikationsdatum: 01.02.2016
Verlag: Springer Berlin Heidelberg
Erschienen in: Environmental Earth Sciences / Ausgabe 3/2016
Print ISSN: 1866-6280
Elektronische ISSN: 1866-6299
DOI: https://doi.org/10.1007/s12665-015-4788-6

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