Physical and Geotechnical Properties of Tropical Peat and Its Stabilization

IF 1.5 4区环境科学与生态学 Q4 ENVIRONMENTAL SCIENCES Mires and Peat Pub Date : 2018-09-19 DOI:10.5772/INTECHOPEN.74173

P. Kolay, S. Taib

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引用次数: 10

Abstract

The chapter presents the physical and engineering properties of tropical peat treated with various types of stabilizers. Quick lime (QL), fly ash (FA), and ordinary Portland cement (OPC) were used as stabilizers. 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. Various physical or index and engineering tests have been conducted to characterize the peat samples. Unconfined compressive strength (UCS) tests were conducted on original and treated peat samples cured for 7, 14, and 28 days. The results show that the UCS value increases with the increase of all stabilizers used and with curing period. The UCS tests were also conducted on the peat samples with the combination of QL and FA to study the combined effects of the stabilizers. 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. Geotechnical engineers can refer to these correlations to determine the bearing capacity of treated peat. In addition, scanning electron microscope (SEM) studies were conducted on original and treated peat samples to investigate the microstructure of the samples.

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热带泥炭的物理岩土特性及其稳定性

本章介绍了用各种稳定剂处理过的热带泥炭的物理和工程性质。采用生石灰(QL)、粉煤灰(FA)和普通硅酸盐水泥(OPC)作为稳定剂。泥炭样品中QL、FA和OPC的添加量分别在2 - 8%、5 - 20%和5 - 20%之间。进行了各种物理或指标和工程试验来表征泥炭样品。无侧限抗压强度(UCS)测试分别对原始和处理过的泥炭样品进行了7、14和28天的固化。结果表明，随着稳定剂用量的增加和固化时间的延长，UCS值也随之增加。还对泥炭样品进行了QL和FA联合使用的UCS试验，研究了稳定剂的联合作用。本研究建立了原始泥炭的物理和工程性质与不同类型稳定剂处理泥炭样品的UCS结果之间的不同相关性。岩土工程师可以参考这些相关性来确定处理过的泥炭的承载力。此外，对原始泥炭样品和处理后的泥炭样品进行了扫描电镜(SEM)研究，研究了样品的微观结构。

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来源期刊

Mires and Peat ENVIRONMENTAL SCIENCES-

CiteScore

2.30

自引率

16.70%

发文量

审稿时长

33 weeks

期刊介绍： Mires and Peat is a peer-reviewed internet journal focusing specifically on mires, peatlands and peat. As a truly “free-to-users” publication (i.e. NO CHARGES to authors OR readers), it is immediately accessible to readers and potential authors worldwide. It is published jointly by the International Peatland Society (IPS) and the International Mire Conservation Group (IMCG). Mires and Peat is indexed by Thomson Reuters Web of Science (2017 Impact Factors: 1.326 [two-year] and 1.638 [five-year]), Elsevier Scopus, EBSCO Environment Complete, CABI Abstracts, CSA Proquest (including their Aquatic Science and Fisheries Abstracts ASFA, Ecology, Entomology, Animal Behavior, Aqualine and Pollution databases) and Directory of Open Access Journals (DOAJ). Mires and Peat also participates in the CABI Full Text Repository, and subscribes to the Portico E-journal Preservation Service (LTPA). Mires and Peat publishes high-quality research papers on all aspects of peatland science, technology and wise use, including: ecology, hydrology, survey, inventory, classification, functions and values of mires and peatlands; scientific, economic and human aspects of the management of peatlands for agriculture, forestry, nature conservation, environmental protection, peat extraction, industrial development and other purposes; biological, physical and chemical characteristics of peat; and climate change and peatlands. Short communications and review articles on these and related topics will also be considered; and suggestions for special issues of the Journal based on the proceedings of conferences, seminars, symposia and workshops will be welcomed. The submission of material by authors and from countries whose work would otherwise be inaccessible to the international community is particularly encouraged.