• umar majid reshi
• Dr. RAKESH GUPTA

Thermal power plants that fuel on coal are key source of power generation in India. These thermal power plants leave coal as waste product. This coal ash is not just harmful to human health but also causes serious threat to environment. This research work focuses on use of heavier part of coal ash that is “bottom ash” to replace certain range of fines, its lighter part that is fly ash as the filler and jute used in optimum quantities so as to enhance the properties of “DBM”. Experimental studies are carried out on dense grade bituminous mixes prepared by using coarse aggregates, “bottom ash” to replace certain size range of fines, “fly ash” as filler in place of stone dust and jute fiber as an additive to enhance properties of mix. “Gradation for dense graded bituminous macadam (DBM)” has been taken in accordance with recommendations put forth by MORTH using maximum aggregates size of 26.5 mm. since jute is biodegradable so it needs to be coated with slow setting emulsion (SS-1) which is then added in percentages varied by .25% from 0% to 0.75% by weight of the mix, lengths are varied from 0mm to 20mm with the increment of 5mm. For preparing the test samples VG30 was used as the paving bitumen. Determination of marshal characteristics, binder content, fiber content and length of jute fibre was done by using Marshall’s test. Highest value of Marshall Stability obtained was 15kN, bitumen content of 5.6%, fiber content of 0.5% and length of 10 mm gave best results. Besides Marshall’s characteristics various other performance characteristics including tensile strength, creep and susceptibility towards moisture were also determined. Summarizing this, overall boost in the properties of “DBM” was found when coal ash was used as fine aggregates and mineral filler, stabilized with SS-l coated jute fibre. Coal ash and jute fibre together can pave a way for new methods of pavement construction. Use of coal ash in pavements is one of the solutions to reuse it in a best possible way by substituting costlier resources of sand and stone dust.

Jute fiber, coal ash, Voids in Mineral Aggregates (VMA), Marshall Stability value, Marshall flow value, asphalt

"EFFECT ON BITUMINIOUS MIXES BY ADDING COAL ASH AND JUTE FIBRE IN FLEXIBLE PAVEMENTS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 7, page no.517-522, July-2018, Available :http://www.jetir.org/papers/JETIR1807799.pdf

"EFFECT ON BITUMINIOUS MIXES BY ADDING COAL ASH AND JUTE FIBRE IN FLEXIBLE PAVEMENTS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 7, page no. pp517-522, July-2018, Available at : http://www.jetir.org/papers/JETIR1807799.pdf