The basis of the thesis was to find out the change in the physical properties of the bitumen by modifying it with fly ash. Different percentage of fly ash was used to modify the bitumen. Various physical tests were conducted on virgin and modified bitumen to evaluate its physical properties. Marshall Test was conducted on bituminous mix prepared using modified and unmodified bitumen and the results were analyzed and compared.The study indicated that increase in the percentage of fly ash improves the physical properties of virgin bitumen. Further it also indicated that increase in the percentage of fly ash improves Marshall Stability and flow values in the bituminous mix.The objective of this study is to investigate the effect of fly ash as a filler replacement on the mechanical properties of asphalt–aggregate mixtures. Utilization of fly ash, which is the by-product of coal-fired power generation, is of great importance from an environmental and economical point of view. In this study, a dense bituminous mixture composed of calcareous aggregate was selected as the reference mixture. It was observed that there was a definite increase in Marshall Stability and decrease in flow values, especially when calcareous filler was replaced by Soma-type fly ash, which was one of the three types of fly ashes used. The mechanical properties, namely elastic strain, elastic modulus, and permanent strain, of the asphalt mixtures were determined by carrying out fatigue tests with a UMATTA tester for three types of fly ashes, portland cement, lime, and control specimens. The changes in mechanical properties are important in the sense that they affect the behavior of asphalt concrete pavement under applied loads. This mechanism can be explained basically by bitumen extension. The fatigue life of fly ash specimens, especially Soma fly ash, was found to be considerably higher than that of calcareous filler specimens. Based on this study, it is demonstrated that fly ash can be used effectively in a dense-graded wearing course as a filler replacement.
Utilization of fly Ash
International Journal of Trend in Scientific Research and Development - IJTSRD having
online ISSN 2456-6470. IJTSRD is a leading Open Access, Peer-Reviewed International
Journal which provides rapid publication of your research articles and aims to promote
the theory and practice along with knowledge sharing between researchers, developers,
engineers, students, and practitioners working in and around the world in many areas
like Sciences, Technology, Innovation, Engineering, Agriculture, Management and
many more and it is recommended by all Universities, review articles and short communications
in all subjects. IJTSRD running an International Journal who are proving quality
publication of peer reviewed and refereed international journals from diverse fields
that emphasizes new research, development and their applications. IJTSRD provides
an online access to exchange your research work, technical notes & surveying results
among professionals throughout the world in e-journals. IJTSRD is a fastest growing
and dynamic professional organization. The aim of this organization is to provide
access not only to world class research resources, but through its professionals
aim to bring in a significant transformation in the real of open access journals
and online publishing.