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• The ARA could enhance the road performance of the LFSMA-13 for different ages and decrease the performance sensitivity to age. • The lignin fibers physically interact with the asphalt, while the ARA could chemically interact with the asphalt mixture. • The peak area of the imino and methyl in the asphalt decreases, and the peak area of the carbonyl and sulfoxide increases with age. • The correlation between the peak areas of imino, methyl, carbonyl, and sulfoxide, and the physical property indices of the LFSMA-13 and ALSMA-13 is good. This paper aims to analyze the long-term road performance of anti-rutting agent (ARA) reinforced asphalt mixture, and reveal its road performance from the micro morphology and chemical perspective. ARA was used to modify the lignin fiber-reinforced SMA-13 asphalt mixture (LFSMA-13). The unaged, and the short and long-term aged specimens were used to test the road performance (high and low-temperature properties, water stability, and anti-cracking) of the LFSMA-13 and ARA modified LFSMA-13 (ALSMA-13). In addition, the micromorphology of the additives and asphalt mixture and the chemical property of asphalt in the mixture were analyzed using the scanning electron microscope (SEM) test and Fourier transform infrared (FTIR) test. The relationship between road performance and chemical property was also analyzed. The results showed that the performance of the ALSMA-13 was better with age than the LFSMA-13. The SEM images showed that the lignin fiber and the ARA could form a network structure in the SMA-13 mixtures. The FTIR test indicated that the ARA's amino group (–NH–) could chemically interact with the asphalt in SMA-13. The peak area of the carbonyl and sulfoxide chemical group increased, and the imino and methyl decreased with age. The results showed a good correlation between the FTIR parameters and road performance. [ABSTRACT FROM AUTHOR]

• Improved fresh properties were found by introducing MCSW and FA in HSSCC. • FA used up to 25% in ternary mixes resulted in comparable compressive strength with the 5SF mix. • Combined use of MCSW up to 10% and FA up to 15% along with 5% SF resulted in better resistance to water absorption. • SEM analysis indicated improved microstructure by combined use of MCSW up to 10% and FA up to 15% along with 5% SF. Disposal of marble cutting slurry waste (MCSW) has acquired a disastrous proportion and is a leading cause of environmental and health-related issues. On the other hand, high strength self-compacting concrete (HSSCC) is being widely used which requires a higher quantity of cement and ultimately resulting in the substantial CO 2 emission to the environment. The aim of this study is to produce economical and eco-efficient HSSCC using MCSW, fly ash (FA), and silica fume (SF). This would help to beneficially use MCSW and minimize the need to use large quantities of cement in HSSCC production, thus significantly reducing CO 2 emissions. Total sixteen number of HSSCC mixes in binary, ternary and quaternary form were prepared by incorporating MCSW, FA, and SF as a replacement of cement. Among all HSSCC mixes, one mix was prepared with a 100% cement binder which was named as control mix. The impact on fresh properties was assessed by slump flow, T 500 time, V-funnel time, fresh density, L-box height ratio, J-ring flow, and J-ring step height. Mechanical performance in terms of compressive strength, and other properties like percentage of water absorption, percentage of voids, and dry bulk density were also examined. The microstructural investigation was carried out using the Scanning electron microscope (SEM) and Fourier transform infrared radiation (FTIR) techniques. It was observed that the incorporation of MCSW and FA improved the fresh properties of HSSCC. A combined use of 10% MCSW and 15% FA with 5% SF as cement replacement resulted in enhanced mechanical performance and amended microstructure. [ABSTRACT FROM AUTHOR]