Durability and Swelling of Tropical Stabilized Peat Soils

Deboucha, Sadek; Hashim, Roslan

doi:10.3923/jas.2009.2480.2484

Cited by 13 publications

(9 citation statements)

References 2 publications

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“…The presence of organic matter in peat leads to high potential for further decomposition as a result of changing environment conditions. Peat also exhibit high natural moisture content (up to 800%) [1]. As demand for lands goes up with the increase of population causes engineers to think about the future development of peat land.…”

Section: Introductionmentioning

confidence: 99%

Peat Stabilization using Gypsum and Fly Ash

Kolay¹,

Pui²

2010

JCEST

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This paper presents the stabilization of local peat soil from Matang, Sarawak, using gypsum and fly ash. Peat soil has been identified as one of the major groups of soils found in Malaysia, which has high compressibility and low shear strength. Presence of soft or peaty soil is a major problem encountered by civil engineers in Sarawak. Different percentages of gypsum (i.e., 2, 4, 6 and 8%) and fly ash (i.e., 5, 10, 15, 20 and 25%) were added into peat soil at optimum moisture content and it’s maximum dry density determined by standard Proctor test. Unconfined compressive strength (UCS) test were conducted to determine the strength gain after 7, 14 and 28 days of curing periods. Physical properties of the peat soil have also been studied for identification and classification purposes. The unconfined compressive strength test results show that the peat soil gained strength due to the addition of different percentages of admixtures such as gypsum and fly ash and the strength also increases with the increase of curing periods.

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Section: Introductionmentioning

confidence: 99%

Peat Stabilization using Gypsum and Fly Ash

Kolay¹,

Pui²

2010

JCEST

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“…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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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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“…Studies on the stabilization of hyper-compacted raw earth based on a combination of alkaline activation and silane-siloxane admixture revealed that stabilization can reduce the moisture buffering capacity of the masonry [12]. Deboucha and Hashim [13] investigated about the production of lightweight bricks using peat soil, sand, cement and hydrated lime mixtures using steam autoclaving. By enabling compressive stabilization method (6 and 10 Mpa pressure), the values of compressive strength and water absorption of stabilized peat bricks obtained were quite impressive (5.48 and 7.10 MPa as well as 4.75 and 2.6%, respectively).…”

Section: Introductionmentioning

confidence: 99%

Envisaging Sustainable Building Materials for Earthen Construction Practices

Narendhran¹,

Parthasarathy²,

Vignesh³

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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Cost-effective construction practices generally rely on the selection of sustainable building materials irrespective of their environmental responsiveness and adaptability towards developing a comforting habitat. Present study aims to address the feasibility of developing soil-based building blocks using natural and recyclable materials by following modified adobe method. Unburnt bricks were manufactured from native red soil using optimized proportion of low cost binders and tested for their durability and thermal behaviour under various experimental conditions. An equi-molal binary mixture of cement and lime (15% each) was turned out to be the best combination to provide excellent compressive strength (6.43±0.15 N/mm2). As per the rate of water absorption and stabilization during the curing process, impounded bricks provided better results compared to the mat curing and spray curing. The rate of change in surface temperature of bricks added with lime and cement showed slightly lower values for cooling cycles (0.2°C/min to 0.5°C/min) compared to the heating cycles (0.6°C/min to 1.0°C/min) when exposed to solar radiation. The prepared bricks are found to be economic by reducing the construction cost by 40% on material. Based on the results, the red soil bricks provide an excellent choice as a sustainable building blocks to meet the increasing housing requirements.

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Durability and Swelling of Tropical Stabilized Peat Soils

Cited by 13 publications

References 2 publications

Peat Stabilization using Gypsum and Fly Ash

Peat Stabilization using Gypsum and Fly Ash

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

Envisaging Sustainable Building Materials for Earthen Construction Practices

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