Characterization and Impact of Peat Fires on Stabilization of Tropical Lowland Peats in Banting, Selangor, Malaysia
Document Type
Article
Publication Date
1-1-2020
Abstract
Peat soil is a representative material of soil and well known as rich in organic matters, high compressibility, high porosity and low shear strength. During dry seasons, peat lands will lose lots of water and potentially turn into a tinderbox bringing in fires. When peat forest fires happen, it prompts degradation of humic-rich organic matter eventually reduce the stability of peat soil. The impacts of peat fire on peat soil from degraded area in Banting, Selangor, Peninsular Malaysia, were investigated through the field identification, physical and engineering properties through burnt peat site. The Unconfined Compressive Strength (UCS) result shows the burnt peat soil gained in strength that strongly related to the binder and filler dosage, moisture content of peat and curing time. The value of UCS strength increased with the gain of moisture content of peat samples but the strength tends to decrease when the moisture content exceeds certain point. The organic material changed its physical and chemical structure resulting from the fire event, thus, the capability of the soil to hold water particles is reducing and yielded higher UCS strength of cement-peat-stabilization. The most important geotechnical aspects of peat that have effect on stabilization process are natural water content, humification grade, ash content, and pH value. The results also suggested that lateral variation within the peat basin indirectly affects the strength of cement-peat-stabilization. The strength of burnt peat can be considerably improved by stabilization and support the concept of Air Curing Technique. © 2020 Penerbit Universiti Kebangsaan Malaysia. All rights reserved.
Keywords
Air Curing Technique, Cement-peat-stabilization, Lateral variation, Peat fires, Unconfined Compressive Strength
Divisions
fac_eng,GEOLOGY
Funders
IPPP grant BK064-2015 and grant RF022B-2018 under Pusat Pengurusan Geran Penyelidikan (PPGP), University Malaya (Kuala Lumpur, Malaysia)
Publication Title
Sains Malaysiana
Volume
49
Issue
3
Publisher
Penerbit Universiti Kebangsaan Malaysia