A STUDY ON ENHANCEMENT OF ENGINEERING PROPERTIES OF GRADE BITUMINOUS MIXES WITH COAL, ASH BY USING NATURAL FIBER

Harsh Kumar Ahirwar; Chhaya Ahirwar; P.C. Diwan

Volume : VIII, Issue : II, February - 2019

A STUDY ON ENHANCEMENT OF ENGINEERING PROPERTIES OF GRADE BITUMINOUS MIXES WITH COAL, ASH BY USING NATURAL FIBER

Harsh Kumar Ahirwar, Chhaya Ahirwar, P. C. Diwan

Abstract :

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 is fly ash and bottom ash. Heavy dumping of the waste products causes lathell 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 and filament fiber) used to improvise the engineering properties of bituminous paving mixes. For national interest these waste products, which are available generally and abundantly can be used economically for bituminous paving are extremely strong purpose, which fundamentally helps in saving the natural aggregate resources of the nation. In the present study, dense grade of bituminous mix specimens are prepared using natural aggregate as coarse aggregates, bottom ash as fine aggregates, fly ash as filler and sisal fiber as submission. Proportion of aggregate for dense graded bituminous macadam (DBM) grading has been considered as per MORTH (2013) having nominal maximum aggregates size (NMAS) 26.5 mm. To strengthen the mix, slow setting emulsion (SS1) coated sisal fiber is added in meaning percentage of 0, 0.25%, 0.5%, 0.75%, and 1% by weight of the mix, with different length alternatives such as 5mm, 10 mm, 15 mm and 20 mm. At the initial stage of the research, specimens were prepared with the two types of paving bitumen i.e. VG30 and VG20, out of which the remaining trials resulting better Marshall characteristics with VG30 bit mastic and hence was conformed for subsequent read . Detailed study with Marshall test results were used to determine the marshall method characteristics, optimum binder content and also optimum fiber content including by the optimum length of fiber. Marshall stability as high as 15kN was obtained with optimum bitumen content of 5.57%, with optimum fiber content of 0.5% with optimum fiber span of 10 mm. Further, for delivering they accomplishment of the pavement, many performance tests were also conducted such as moisture susceptibility test, indirect tensile strength (ITS), creep test and water sensitivity test ratio of bitumen mixes. It is fallen observed then not only sufficient, but also much improved engineering properties result with coal ash as fine aggregate and filler, stabilized ,Utilization of non–conventional aggregate like coal ash and behavior fiber together thus may help to find a new way of bituminous reinforced construction. The coal ash dumping which is a serious concern about to everyone in respect of its waste disposal and environmental pollution, can find one way for its reuse in an economical way by substituting behaviors resources of sand and ick dust