The physicochemical properties and microstructural characteristics of peat and their correlations: reappraisal

Paul, Abhinaba; Hussain, Monowar; Ramu, Badiga

doi:10.1080/19386362.2018.1483099

Cited by 15 publications

(7 citation statements)

References 48 publications

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“…If the organic content is high, its direct impact on the liquid limit and fibrous peat liquid limit is high, then the sapric peat. Generally, the average liquid limit for peat varies from 200 to 600% in the tropical region, while for bog peat, it is in the range of 800 to 1500 % [16], [17]. The liquid limit of tropical peat soil in Malaysia ranges from 130 % to 400% [18], [19], while [20] stated that the liquid limit for peat soil is 149% and 162%.…”

Section: Liquid Limitmentioning

confidence: 99%

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Physical Properties of Undisturbed Tropical Peat Soil at Pekan District, Pahang, West Malaysia

Wahab

Hasan

Kusin

et al. 2022

IJIE

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Peat soilare considered soft soilwith havingweakcharacteristicssuch as low shear strength, high moisture content, and compressibility. Construction perspective, peat soilis consideredas unstable soil due to its poor engineering properties. It may cause an extensive loss in road orbuilding construction projects. Thekey objectives of the current study areto examinethe physical properties of peat soil including shear strength, liquidlimit, moisturecontent, organic content, pH, and dry densityof peat soil inPekandistrict.The peatsamples were collected fromKampung Bahru(KB), Kampung Lancing I(KLI), and Kampung LancingII (KL II), Pekan District, Pahang, Malaysia. Thefinding indicates that the shear strength (kPa) for was measured in between 7.2 to 8.2 kPa. The water content was recorded 537.10%to635.28%. The liquid limit was examined 137.638%to 152.540 %, themaximum drydensity wasexamined6.68 x 10-7kg/cm3to 7.99x 10-7kg/cm3. Theaverage organic content was calculated as approximately 95.88 % to98.48 %. In comparisonwith previous study,its indicatedthat the investigatedpeat soil in Pekan area is mainlycontent with lower shearstrength, highwater content, liquid limit, and low density, resulting in low strengthening properties. Based on the examined physical properties, its specifiedthat peat did not have adequate stability as a road or building foundation.Strengthenof peat are highlyrecommendedfor any types of construction onpeatlandin Pekan district, Pahang, Malaysia.

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Section: Liquid Limitmentioning

confidence: 99%

“…The high organic peat content leads to high moisture content [25]. The organic content of various peat soil types varies in the range of (25-98.46%) [17]. The organic content of Malaysian peat soils ranges from 70% to 98% [26][27][28]19].…”

Section: Organic Contentmentioning

confidence: 99%

Physical Properties of Undisturbed Tropical Peat Soil at Pekan District, Pahang, West Malaysia

Wahab

Hasan

Kusin

et al. 2022

IJIE

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“…The deepest peat found from a survey by Tropenbos Indonesia was 9.8 m. It is dominated by fibric (slightly decomposed) peat and hemic (moderately decomposed) peat, which indicate high water retention capacity. However, when canals are built, this capacity is disturbed, resulting in highly flammable dry peat (Paul et al 2018).…”

Section: Peatland Fires In the Pawan-kepulu-pesaguan Landscapementioning

confidence: 99%

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2022

TFI

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Netherlands. https://www.tropenbos.org/resources/publications/ etfrn+news+56:+towards+productive+landscapes Council of Europe. 2022. Rethinking sustainable development; investing with strategic foresight to build resilience. Written statement by Mr Krzysztof Zyman, presented at the 2022 UNDRR Global Platform for Disaster Risk Reduction, 27 May 2022. https://rm.coe.int/ global-forum-drr-bali-2022-midterm-review-plenary-3-rethinkingsustain/1680a876b8 Crutzen PJ and Goldammer JG. eds. 1993. Fire in the environment: The ecological, atmospheric, and climatic importance of vegetation fires. Dahlem Workshop Reports. Environmental Sciences Research Report 13. John Wiley & Sons, Chichester. https://gfmc.online/conferences/1992. html FAO. 2010. FAO term portal: collection: Fire management. www.fao.org/ faoterm/en/?defaultCollId=13 FAO. 1986. Wildland fire management terminology. FAO Forestry Paper 70. In English, Spanish and French. Rome: FAO. https://www.fao.org/3/ ap456t/ap456t00.pdf. GFMC (Global Fire Monitoring Center). 2017. Fire Management Glossaries. https://gfmc.online/literature/glossary.html. xiv -Tropical Forest Issues 61 -GFMC (Global Fire Monitoring Center). 2013a.

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“…Past studies reported that peat undergoes pyrolytic decomposition due to its complex qualitative and quantitative compositions [51,52]. Moreover, it has been observed in the previously published articles that peat decomposition occurred at three different stages.…”

Section: Thermogravimetric Analysis (Tga)mentioning

confidence: 99%

Microstructural Characterization of Fibric Peat Stabilized with Portland Cement and Silica Fume

et al. 2022

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Peat is a renowned problematic soil and needs stabilization to enhance its engineering properties. Silica fume (SF) and Ordinary Portland Cement (OPC) were extensively adopted to increase the mechanical properties of peat; however, their microstructural analysis is lacking. Investigated herein is the microstructural evolution caused by the OPC and SF implementation in peat soil stabilization. Initially, the compositional analysis (elements and oxides) of peat and binders was carried out via energy-dispersive X-ray (EDX) and X-ray fluorescence (XRF). Subsequently, the microstructural changes that occurred in the stabilized peat were examined through a series of microstructural analyses. The analysis includes scanning electron microscope (SEM), X-ray diffraction (XRD), Fourier-Transform Infrared Spectroscopy (FTIR), and thermogravimetric analysis (TGA) for morphological, mineralogical, functional group analysis, and bond thermal analysis, respectively. The SEM micrographs evidence the transformation of loosely packed with large micropores of untreated peat into a compact dense peat matrix. This transformation is due to the formation of newly developed minerals, i.e., calcium hydrates (CH), calcium silicate hydrates (C-S-H), calcium aluminate hydrate (CAH), ettringite (Aft) caused by the pozzolanic reaction of binders as recorded by the XRD. Similarly, different molecular functional groups were found in the FTIR analysis with the incorporation of SF and OPC. Finally, the percentage of mass loss was assessed through TGA analysis revealing the decomposition of stabilized in the second and third stages.

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The physicochemical properties and microstructural characteristics of peat and their correlations: reappraisal

Cited by 15 publications

References 48 publications

Physical Properties of Undisturbed Tropical Peat Soil at Pekan District, Pahang, West Malaysia

Physical Properties of Undisturbed Tropical Peat Soil at Pekan District, Pahang, West Malaysia

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Microstructural Characterization of Fibric Peat Stabilized with Portland Cement and Silica Fume

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