Assessing the effect of various categories of filler of high content on Hot Mix Asphalt

DOI

10.2991/978-94-6463-478-5_16How to use a DOI?

Keywords

Stone dust; Cement; Fly ash; Marshall quotient; Tensile strength ratio

Abstract

Fillers strengthen cohesiveness and fill void in the mixture of asphalt, which affects engineering properties of this mixture. Ordinary Portland Cement (OPC), lime and stone dust are generally used in the asphalt mixture as fillers. The influence of different fillers of various contents on volumetric and mechanical properties (Marshall stability, quotient and moisture susceptibility) of asphalt concrete mixtures was analysed in this research. The mixing of aggregate and fillers (stone dust, OPC and/or fly ash) in different amounts with asphalt was done. Hot mix asphalt (HMA) specimens with filler (stone dust) and without filler were prepared to compare the OPC cement and fly ash-added HMA. A total of eight test specimen groups were prepared, utilizing various fillers in varying concentrations within the mixture. The investigation of volumetric characteristics of asphalt concrete mixtures revealed that HMA without filler had the lowest bulk specific gravity and voids filled with asphalt (VFA), and the highest voids in total mix (VTM) and voids in mineral aggregate (VMA) among all the HMA samples with different filler materials used in this study. Again, HMA with 7% OPC cement had the highest specific gravity, VFA, and lowest voids. On the other hand, for the mechanical characteristics of HMA, the mixture of a combination of 4% OPC cement and 4% fly ash filler had the highest Marshall stability and quotient values and the lowest flow value. The 7% cement filler-added mixture had the highest tensile strength ratio (TSR), which was 58.32%. The mixture with 7% cement filler had the maximum indirect tensile strength (ITS) value for both dry and wet conditions. Therefore, compared to stone dust and fly ash filler used in HMA separately, the OPC cement filler and its combination with fly ash filler used to the asphalt mixture showed a higher strength, and moisture susceptibility.

Copyright

© 2024 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Saifa Summin Upoma
AU  - Mohei Menul Islam
AU  - Quazi Sazzad Hossain
PY  - 2024
DA  - 2024/07/23
TI  - Assessing the effect of various categories of filler of high content on Hot Mix Asphalt
BT  - Proceedings of the 7th International Conference on Civil Engineering for Sustainable Development (ICCESD 2024)
PB  - Atlantis Press
SP  - 203
EP  - 215
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-478-5_16
DO  - 10.2991/978-94-6463-478-5_16
ID  - Upoma2024
ER  -