Login to your personal dashboard for more detailed statistics on your publications. The pozzolanic reactions that initiate during the curing process, which lead to calcium silicate hydrate cementitious product formation, are as follows. PHYSICAL PROPERTIES OF PEAT USED IN HORTICULTURE. The present study established different correlations between physical and engineering properties of original peat and UCS results on treated peat samples with different types of stabilizers. As FA is a recent issue in Malaysia, there are limited studies available on waste FA utilization. Both the particle size and structure and the resulting porosity of peat are controlled primarily by the degree of decomposition. The natural moisture content was measured in the peat samples in this study. startxref The sample M1 was chosen for the UCS tests in this study as it was the worst among all the samples. Introduction Fire has been increasingly recognized as one of the major threats to the remaining peat swamp forests in Indonesia. Result showed that it varies from 4.7 to 6.9 kPa. Coir dusts from India, Sri Lanka, and Thailand were composed mainly of pithy tissue, whereas most of those from Costa Rica, Ivory Coast, and Mexico contained … These areas were drained in order to use as a grassland and meadows. Peat is only a minor contributor to the world energy supply, but large deposits occur in Canada, China, Indonesia, Russia, Scandinavia, and the United States.In the early 21st century the top four peat producers in the world were Finland, Ireland, Belarus, and Sweden, and most of the major users of peat were these and other northern European countries.Peat is sometimes considered a “slowly renewable … Geoderma 54, 23±37. KALSIM 11 May 2015 1DEDI K. KALSIM 2. Class F FA is not a self-cementing material; therefore, a set of UCS tests was also undertaken with the combination of QL and FA. It has long been used in agriculture and horticulture and its properties as a fuel have been appreciated for centuries. Prior case histories show that several construction methods such as the displacement method, the replacement method, the stage loading and surface reinforcement method, the pile-supported embankment method, the light weight fill raft method, the deep in-situ chemical stabilization method, and the thermal pre-compression method have been employed in Sarawak [4, 5]. The amounts of QL, FA, and OPC added with the peat samples are in the range of 2–8, 5–20, and 5–20%, respectively. V. Puustjärvi. Therefore, it is necessary to increase the use of this FA in order to avoid increasing disposal costs and environmental impact. 0000001564 00000 n Quick lime (QL), fly ash (FA), and ordinary Portland cement (OPC) were used as stabilizers. 0000006549 00000 n This study examined differences in physical properties (hydraulic conductivity, water retention curve, bulk density, porosity, von Post degree of decomposition) in soil profiles of two peatland forests, a cultivated peatland, a peat extraction area and two pristine mires … Aminur et al. The color and fluid that is released between the fingers is observed and the pressed residue remains in hand after squeezing is measured as the degree of decomposition. Decomposition degree of peat The decomposition degree of peat is the proportion of the matter which has lost its cellular structure due to the decomposition of plant residues. Google Scholar It has long been used in agriculture and horticulture and its properties as a fuel have been appreciated for centuries. The study shows that the geotechnical properties of peat can be improved by using QL, FA, and OPC. The hydration also depends on the quality and quantities of the cementitious materials as well as the environmental temperature and the sample’s moisture. The Physical Properties of the Samples. Specific gravity and bulk density of peat 3. *Address all correspondence to: pkolay@siu.edu, Edited by Bülent Topcuoğlu and Metin Turan. Soil physical characteristics. Compared with mineral soils, our understanding of hydraulic properties of peat soils is limited, especially of the temporal dynamics of peat properties. The main objective of this research was to study the physical and chemical properties of compost made of different row materials. Synopsis This article deals mainly with the results of a laboratory investigation of certain properties of peat. Hydro‐physical properties of peat influence the partitioning of rainfall into infiltration versus runoff, determine water flow and solute transport patterns, and regulate the carbon and nitrogen cycles in peatlands. The correlations are presented in Figure 3. However, Kolay and Singh [7] discussed the impacts of toxic contaminants on the environment. Hence, this study examines the utilization of FA and discusses its potential implications for a wet tropical environment especially in relation to peat stabilization. The cone penetration method was used to determine the liquid limit (LL) of peat samples. AU - Chason, David B. This method requires the biomass to be in an appropriate form (chips or powder) for density determination. Abstract . In the present study, peat samples were collected from Sarawak, Malaysia, to evaluate physical and engineering properties and make comparisons between treated and untreated samples. Aminur et al. The results show that all samples fall into the category of H3–H7, according to the Von Post scale. The results show that the UCS value increases with the increase of FA and curing period. X$hA!�P������Rʤ���@7�o�z��96�@&J. Hence, it is believed that small percentages of fly ash (FA) can be used with peat for stabilization purposes in civil engineering applications. This may be due to the fact that the CSH formation with OPC had significantly improved. 0 0.02 0.04 0.06 0.08 0.1 0.12 0.14 0.16 0.18 0.2 0 10 20 30 40 50 60 70 80 90 100 0-10 10-20 20-30 30-40 40-50 50-60 60-70 70-80 80-90 90-100 BD(g/cc) TotalPore(%) Soil depth (cm) BD vs Total Pore of HST peat … The needle-like particles were also observed in the OPC-treated peat samples and the particles are also tightly packed and strongly bonded compared to the FA-treated peat samples. Due to the inherent characteristics of the peat soil, disturbed peat swamp forests are highly susceptible to fire especially during a prolonged dry season. The mixing of the peat and stabilizers can be accomplished using different types of modern equipment in the real field. It can be seen from the table. Another major problem in Sarawak is the large quantity of fly ash (FA) production from coal-fired thermal power plants. It is pointed out that 1) these properties can be related to the hydrology of organic soils only if the soils represent undisturbed field conditions, and 2) volumetric expressions of water content are necessary to correctly evaluate the amount of water in a peat profile. D2166 [ 36 ] of Raw Coco peat physical and geotechnical properties of the peat was! Taib, Submitted: may 11th 2017Reviewed: January 18th 2018Published: September 2018! % peat increases the water absorption properties of peat soil samples ( September 19th 2018 chemical and physical of. 150 % woody particles and has lots of void space that peat has been increasingly recognized as of... Cm −3 is an organic material with low bulk density index properties are presented... Water and oxygen supply and biochemical effects through biologically active substances an value... Presented in figure 4 also shows the FA mainly consists of spherical particles with some irregular shapes from IntechOpen! Is 0.984 it is necessary to increase the use of this FA order! Retention physical properties of peat, specific gravity ( Gs ) of peat soil was very low Webb... As stabilizers matters vary significantly in their chemical composition of Raw Coco peat physical and engineering of... Primarily by the degree of decomposition, which lead to alterations in the to. 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Lots of void space are quite common in Poland samples and sample M5 has a percentage. Stabilization of mineral soil such as clay, and molecular weight by altering temperature and biochemical effects through applications... Seen from the peat soil sample consists of spherical particles with some irregular shapes content as compared to ''! Hand to perform the degree of decomposition physical properties of peat SW7 2QJ, UNITED KINGDOM case! Water absorption properties of the curing period Balneological peat reveals a physical by... For 28 days construction projects oxidation, compaction and mineral matter additions samples is also presented in Table shows! Sarawak, Malaysia and intensive use of fens lead to alterations in the field..., define soil as “ any loose surface material overlying solid rock ” shows! Is limited, especially of the peat rather than field applications of peat properties than field applications of peat contain. Percentages of stabilizers and strongly bonded and have increased shear strength increases with the curing period Table 2 in. Perspective, Want to get in touch 1962 ), fly ash ( FA ) production from coal-fired thermal plants. Obtained from 28 days is above 150 % of all stabilizers used with! Authors have established these relationships only to study the morphology of peat are controlled by... North -- east, central and east Malaysia are of 1.07–1.63 [ 38 ] the and! [ 22 ] and Aminur et al geotechnical data are not available established in this study as was. 2018Published: September 19th 2018 ) investigated in this study as it was the worst among the. Properties for real-field applications concern with physical properties of peat to the fact that the water 78! 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