Abstract
The performance of asphalt concrete pavements (ACP) is greatly related to the rate of rutting. Stone dust is mostly used as a filler in ACP. Bagasse ash being cementitious in nature, and costless waste can also be used as a filler. The overall aim is to select a suitable filler for better performance of asphalt concrete pavements. The effectiveness of locally available bagasse ash is examined as a filler for asphalt concrete in terms of its effect on job mix formula, stability, rutting depth, the rise in temperature, and cost of asphalt concrete. All tests are performed as per AASHTO standards. The bagasse ash asphalt concrete showed a reduction in rutting depth, temperature rise, and cost as compared to that of the stone dust asphalt concrete without disturbing the job mix formula. Hence, bagasse ash can be helpful for the performance enhancement of asphalt concrete pavements.
Highlights
As compared to other types of pavements, asphalt concrete pavements (ACP) are considered a better choice in terms of its environmental friendliness [1]
The passing of 100%, 85.40%, 71%, 51.70%, 33.5%, 11.90%, and 4.40% is observed for 19.0 mm (3/4 inch), 12.7 mm (1/2 inch), 9.51 mm (3/8 inch), 4.76 mm (No 4), 2.38 mm (No 8), 0.297 mm (No.50), and 0.074 mm (No 200) sieves, respectively
The range set by AASHTO T-164 is 100%, 75 to 89%, 63 to 77%, 41 to 55%, 28 to 36%, 7 to 15%, and 3 to 8% for 19.0 mm (3/4 inch), 12.7 mm (1/2 inch), 9.51 mm (3/8 inch), 4.76 mm (No 4), 2.38 mm (No 8), 0.297 mm (No 50), and 0.074 mm (No 200) sieves, respectively
Summary
As compared to other types of pavements, asphalt concrete pavements (ACP) are considered a better choice in terms of its environmental friendliness [1]. One of the main flaws responsible for the serviceability decline of the asphalt concrete pavement is an increasing rate of rutting and cracking. Rutting is the primary measure of performance of the pavements in several pavement design methods. The performance of ACP can be enhanced by reducing its rate of rutting. Rutting loosely is defined as longitudinal depressions in wheel paths because of continued densification by the traffic load, which is a type of structural distress in asphalt concrete pavements. Rutting is a serious problem which is resulted due to high thermal conductivity of asphalt and settlement of subgrade material. In the presence of rutting, the rainwater could not dispose of to the side drains [2]
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