Developing novel pothole patching mixtures utilizing iron ore waste as substitute to conventional aggregates with anti-stripping agent

Kumar, G. Shiva; Jakati, Suraj S.; Sharanagouda,; Ramaraju, H. K.

doi:10.1016/j.matpr.2023.03.225

Cited by 4 publications

(1 citation statement)

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“…According to an evaluation of the Indian road network by the National Highway Authority of India (NHAI), national highways constitute only around 1.7% of the total road network, although they carry nearly 40% of the traffic. Over the past five years, highway traffic has soared 7% to 10% annually, while the number of automobiles has increased by 10.16% annually (Jain et al, 2004;Kumar et al, 2004;Shiva Kumar et al, 2023). Asphalt mixtures, due to their superior properties, are used in road building, as they preserve the base course and the underlying pavement structure from the damaging effects of water and traffic abrasions.…”

Section: Introductionmentioning

confidence: 99%

Performance of Stone Matrix Asphalt Modified with Crumb Rubber and Fibres

Kumar

2023

JJCE

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This article investigates the impact of Crumb Rubber Modified Bitumen (CRMB) and fibre additives (aramid fibre and basalt fibre) on the performance properties of Stone Matrix Asphalt (SMA) mixtures. Tests were conducted to evaluate mix design, draindown, cantabro loss, moisture sensitivity, rutting resistance and fatigue behavior. The Marshall method, the draindown parameters (ASTM D6390-11) and the cantabro loss characteristics (ASTM D 7064) were used to examine the mix design qualities. The modified Lottman test was used to assess the moisture sensitivity of SMA mixes. The roller compactor cum rut analyzer was used to assess rutting resistance. Findings showed that CRMB and fibre additives effectively controlled binder draindown and minimized abrasion loss in SMA mixtures. SMA-CRMB mixtures had higher draindown, but comparable cantabro loss than SMA-AF and SMA-BF mixtures. Incorporating CRMB and fibre additives enhanced moisture sensitivity, rutting resistance and fatigue behavior. SMA mixtures with 0.3% fibre addition displayed similar performance properties to SMA with CRMB. Further, substituting fibre additions for CRMB in SMA combinations may yield similar performance. KEYWORDS: Stone matrix asphalt, Crumb rubber-modified bitumen, Fibre additives, Draindown, Cantabro loss, Moisture sensitivity, Rutting resistance, Fatigue behaviour.

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Section: Introductionmentioning

confidence: 99%