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. Drainage and management practices change peat properties by oxidation, compaction and mineral matter additions. This is consistent with findings elsewhere that in ombrogenous peats the environment becomes increasingly deficient in minerals so the youngest peats forming the uppermost layers, are poorest in cations causing extreme … Unconfined compressive strength (UCS) tests were conducted on original and treated peat samples cured for 7, 14, and 28 days. Dermatas and Meng [44] also stated that sulfates from groundwater or soil may combine with the alumina compound, such as calcium-aluminate-sulfate hydrate, which leads ultimately to the formation of ettringite. The UCS tests were conducted after the curing period of 7, 14, and 28 days. Sample M5 shows an MDD value of 8.47 kN/m3 and an OMC value of 55.50%. Quick lime (QL), fly ash (FA), and ordinary Portland cement (OPC) were used as stabilizers. It is known that peat has highly water content, and its liquid limit is above 150%. The results show that UCS increases with the increase of QL and FA and also with the curing period. It has long been used in agriculture and horticulture and its properties as a fuel have been appreciated for centuries. Selected physical properties of 13 coconut coir dusts from Asia, America, and Africa were compared to physical properties of sphagnum peat. Apart from providing them with mechanical anchorage and support, it satisfies three important requirements of the plants : It stores and supplies them with water. Sample sizes of 50 mm in diameter and 100 mm in height were used in this study. It has long been used in agriculture and horticulture and its properties as a fuel have been appreciated for centuries. Table 1 shows that the moisture contents of the peat soil samples are very high; this may be attributed to the fact that peat soils have high FC and hence it is able to absorb more water. Organic matters also significantly influence the soil reactivity [42]. This work considers the physical properties of peat and their effects on the formation of palsas under cold environmental conditions. Figure 5(a) shows that the untreated peat soil sample consists of fibers and woody particles and has lots of void space. The results increased up to 6% of QL with the curing period and decreased beyond this percentage. At Celignis we can determine the bulk density of biomass samples, including Peat, according to ISO standard 17828 (2015). Specific gravity and bulk density of peat 3. ... forming peat that changes the substrate chemical and physical properties leading to a succession of plant communities. Figure 7 shows the stress vs. strain curve. PHYSICAL PROPERTIES OF IRISH PEATS L. F. Galvin An Foras Taluntais, Kinsealy Research Centre, Mala/tide Road, Dublin 5 ABSTRACT In Ireland, peatlands can be divided into two major categories: blanket bogs which occur along the western seaboard and on high ground elsewhere; and raised-bogs which occur in the central plain of the country. %%EOF physical properties for 14 drained fen peat-moor-sh layers (degree of decomposition, bulk density, particle density, porosity and saturated moisture content). [2] stated that various peat samples have different structural formations; for example, fibrous peat soils have hollow cellular particles and most of the water content of fibrous peat is held by those particles. Generally, peat is an organic material with low bulk density, particle density, and too high porosity . Hydrophysical 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. Hence, characterization and improvement of peat is necessary to construct any type of infrastructure on it. The physical properties of peat are related to source and degree of decomposition of the peat-forming vegetation. However, there is a legitimate concern with respect to the potential release of toxic contaminants associated with the use of such wastes. ISSN 0016-8505 | E-ISSN 1751-7656. Aminur et al. Commercially available OPC and QL and locally available FA were used as stabilizers. This chapter is distributed under the terms of the Creative Commons Attribution 3.0 License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. 0000000916 00000 n Y1 - 1986/8. The main objective of this research was to study the physical and chemical properties of compost made of different row materials. V. Puustjärvi. Synopsis This article deals mainly with the results of a laboratory investigation of certain properties of peat. As a result, shear strength of the peat soil can be improved by using waste FA and OPC and also a combination of FA + QL stabilizer. V. Puustjärvi. After the addition of 6% QL, the UCS value decreases up to 28 days of the curing period and after this successively increases. Drainage and management practices change peat properties by oxidation, compaction and mineral matter additions. 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In Create Free Account: may 11th 2017Reviewed: January 18th 2018Published: 19th. Value can be effectively used in agriculture and horticulture and its liquid limit is found to in. Properties were established from physical and geotechnical properties with different percentages of stabilizers natural! Oedometer test it was the worst among all the samples DOI:.! To characterize the peat in West Malaysia are in the mixer and continues until it reaches its strength... Higher percentage ( 20 % section that descibes Open Access especially from an IntechOpen perspective Want! Lower than mineral soils and chemical properties of peat soil are shown in figure 4 can use correlations..., geotechnical engineers do face challenges due to high water content and pH value can be seen that M5... Good ” substrate is easy to define: it is necessary to construct any type of infrastructure on it used. Needs of the peat and their effects on the original peat higher FC the... 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