International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 10 Issue: 08 | Aug 2023
p-ISSN: 2395-0072
www.irjet.net
Study of Effect of Variation of Filler Type and its Proportion in Bituminous Mixes Prahallad B S1, Jaya R Shinganmakki2, Swathi J3, Mohan M4 1P.H.D Scholar, Department of Highway Technology, RASTA-Center for Road Technology, Bengaluru, Karnataka,
India
2Associate Professor, Department of Highway Technology, RASTA-Center for Road Technology, Bengaluru,
Karnataka, India
3M-Tech Scholar, Department of Highway Technology, RASTA-Center for Road Technology, Bengaluru, Karnataka,
India
4M-Tech Scholar, Department of Highway Technology, RASTA-Center for Road Technology, Bengaluru, Karnataka,
India ---------------------------------------------------------------------***---------------------------------------------------------------------
Abstract - Bituminous mixes are vital components of modern infrastructure, and maximizing their qualities is crucial for providing long-lasting and resilient road surfaces. This study investigates the impact of changing the filler kinds and content in bituminous mixes. Mineral powders, polymers, and recyclable materials were all systematically mixed into bitumen- aggregate mixes in various amounts. The mechanical, rheological, and aging properties of the modified bituminous mixtures were investigated using a complete set of laboratory tests. The research exposes unexpected links between filler qualities, content levels, and overall performance. Standard tests were used to evaluate mechanical qualities such as stiffness, resistance to deformation, and fatigue behavior. The rheological properties of the mixes were also evaluated in order to better understand their workability and flow characteristics. The findings offer substantial knowledge into modifying bituminous mix formulations to achieve a balance that optimizes mechanical characteristics and long-term durability. This research contributes to the advancement of sustainable and efficient highway building materials, thereby enhancing the overall quality and service life of transportation infrastructure.
as traffic loads and temperature fluctuations, ensuring the performance of bituminous mixes is critical for the long-term viability and sustainability of road networks. This study looks into the effect of filler type and content on bituminous mix performance, as well as the interactions between fillers and bitumen-aggregate.
Key Words: Filler1, Marshall properties2, Volumetric properties3 and Indirect Tensile Strength4.
2. MATERIALS
1.1 Role of Fillers in Bituminous Mixes Fillers in bituminous mixes are finely powdered ingredients that improve mechanical strength, binderaggregate adhesion, and durability. They increase rigidity, prevent deformation, and prevent cracking, which is essential for load-bearing and minimizing pavement distress. Fillers help to achieve optimal workability and compaction during construction by affecting rheology. Their ability to fill vacant spaces assures dense mixes, decreasing water infiltration and increasing stability. Fillers save money by substituting more expensive components and help the environment by using recycled materials. Overall, fillers enable engineers to alter the qualities of asphalt mixes, resulting in durable, flexible, and environmentally friendly road infrastructure.
Asphalt is a bituminous mix that combines aggregates (such as crushed stone, gravel, and sand) with bitumen, a sticky binder. Bitumen binds, gives flexibility, and waterproofs while aggregates provide load-bearing strength. Fillers such as limestone dust and fly ash improve cohesiveness and moisture resistance. The composition of the mix varies according to climate, traffic, and purpose, with the goal of creating long-lasting, high-quality pavement. We used VG-30 binder, aggregates, hydraulic lime, and cement with variable filler proportions of 2%, 4%, and 6% for BC grade II.
1. INTRODUCTION Bituminous mixes, which are used in road building and pavement applications, are made composed of aggregates and bitumen binder and provide transportation infrastructure with durability and structural stability. Improving their performance is in line with the changing needs of modern transportation. The changing of filler type and content is a main point. Fillers, which are finely divided materials added to improve specific characteristics of bituminous mixes, have the potential to improve mechanical, rheological, and aging qualities.Their changing composition and content allow for customized blend attributes to fulfill individual needs. Given the stress imposed by elements such
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