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Coal-based thermal power plants have been a key source of power generation in India. The prime waste product of a coal thermal power plant are fly ash and bottom ash. Heavy dumping of these waste products causes fatal environment pollution to air, water, and land, besides impairing human health. This research work is done to deliver the optimum use of ash, namely bottom ash as fine aggregate and fly ash as mineral filler with natural fiber (such as sisal fiber) used to improvise the engineering properties of bituminous paving mixes. For national interest these waste products, which are available easily and abundantly cane be used economically for bituminous paving purpose, which ultimately helps in saving the natural aggregate resources of the nation.
In this study, we form a mix of dense graded bitumen with the help of natural aggregates that are used as coarse aggregates. Fine aggregates would be bottom ash, fly ash would be a filler and the additive would be sisal fiber. The proportion taken for DBM or bitumen macadam in a dense form is considered according to MORTH (in 2013) with the max size of the aggregates being 26.5mm. To enhance the mixture, we have SSI or slow-setting emulsion that is coated to the sisal fiber and this is added in varying percentages such as 0 percent, 0.25 percent, 0.5 percent, 0.75 percent and 1 percent by weight of mixtures and length varying like 5mm, 10mm, and 15mm and 20mm. In the initial period of our research, we prepare the specimen in 2 kinds of paving bitumen which are VG10 and VG30. Out of these, the first trials gave an outcome of better Marshal features with VG30 and hence this was accepted for further studies. We take a detailed study of the Marshall Test results which helped us to know the Marshall features, content for binder, and also the content of fiber with the length of the fiber that was optimum. We obtain a Marshall stability which was reaching a high of 15kN while the content of bitumen was 5.57 percent and the content of fiber was about 0.5 percent, while the length of the optimum fiber was 10mm. Apart from these, to get better performances in the pavements, we also conduct some performance tests and these include tests for moisture susceptibility, ITS test, creep test and to find the ratio of tensile strength of the mixes of bitumen. It is seen that not just the needed ones but much enhanced engineering features when coal ash acts like fine aggregates and fibers as fillers, and these natural sisal fibers were coated in advance with SS-1 emulsion. The use of unorthodox aggregates such as natural fibers and coal ash jointly would help to get a novel way of constructing bitumen pavement. The dumping of coal ash, which is a big problem for all, with respect to environmental pollution and disposal, can find an easy and effective way to get reused economically by replacing natural resources such as stone dust and sand.
Keywords:
Bitumen, Aggregate, Marshall Mix, Unit Weight, Fly Ash, Air Voids
Cite Article:
"A Spatial Study on Characterization of Bitumen Binder by the help of Geosynthetic", International Journal of Science & Engineering Development Research (www.ijrti.org), ISSN:2455-2631, Vol.7, Issue 9, page no.80 - 85, September-2022, Available :http://www.ijrti.org/papers/IJRTI2209010.pdf
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000205125
ISSN:
2456-3315 | IMPACT FACTOR: 8.14 Calculated By Google Scholar| ESTD YEAR: 2016
An International Scholarly Open Access Journal, Peer-Reviewed, Refereed Journal Impact Factor 8.14 Calculate by Google Scholar and Semantic Scholar | AI-Powered Research Tool, Multidisciplinary, Monthly, Multilanguage Journal Indexing in All Major Database & Metadata, Citation Generator