Evaluation of the performance of iron ore waste as potential recycled aggregate for micro-surfacing type cold asphalt mixtures

Apaza, Freddy Richard Apaza; Guimarães, Antonio Carlos Rodrigues; Vivoni, Alexander; Schröder, R

doi:10.1016/j.conbuildmat.2020.121020

Cited by 23 publications

(2 citation statements)

References 8 publications

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“…In addition, the boiling test, Schulze‐Breuer and Ruck, is used to assess peeling characteristics and graded compatibility 16 . Apaza et al 17 evaluated the skid and abrasion resistance of MS with iron ore aggregate using WTAT and LWT in conjunction with relevant specification requirements. Gujar and Vakharia 18 used the results of WTAT as an indicator to predict the performance of MS mixtures through machine learning techniques.…”

Section: Introductionmentioning

confidence: 99%

Study of long‐term skid and wear resistance of waterborne epoxy resin‐SBR compound modified emulsified asphalt microsurfacing

Lu,

Zheng,

Gao

et al. 2023

J of Applied Polymer Sci

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As an eco‐friendly technology for pavement preventive maintenance, microsurfacing (MS) has the potential properties of cost‐saving and excellent performance benefits in repairing distress. MS also improves the surface function, especially skid resistance, of old pavements that have gradually decayed under the coupled effects of long‐term environment and loads. Reasonable assessments of the long‐term skid and wear resistance of the MS can provide support for accurate decision‐making on preventive maintenance, which in turn reduces maintenance costs and saves maintenance costs, and ensures traffic safety. To evaluate the long‐term skid and wear resistance of MS in different natural and traffic environments, this paper investigated the change of British pendulum number (BPN), rutting depth, and mass loss rate of waterborne epoxy resin‐SBR compound emulsified asphalt micro‐surfacing (WER‐SBR MEAMS) under different environmental factors and traffic conditions based on the self‐developed accelerated loading abrasion instrument. The factors considered in the experiment include temperature, rainfall, UV radiation, speed, and load. The results showed that temperature and vehicle speed had a detrimental effect on the durability of WER‐SBR MEAMS, which was more pronounced after 10,000 wear loading cycles. Reducing immersion time and slowing down the aging rate can improve the durability of WER‐SBR MEAMS. Further, the influence degrees of different factors on the skid and wear resistance of MS were evaluated using the gray correlation method. From the results of the gray correlation analysis, the correlation coefficients between external variables and BPN, rutting depth, and mass loss rate are all greater than 0.8, which indicate that all the variables involved have relatively obvious and regular effects on the skid and wear resistance of WER‐SBR MEAMS.

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Section: Introductionmentioning

confidence: 99%

Study of long‐term skid and wear resistance of waterborne epoxy resin‐SBR compound modified emulsified asphalt microsurfacing

Lu,

Zheng,

Gao

et al. 2023

J of Applied Polymer Sci

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“…Iron ore (IoT) has gained visibility in recent years. Apaza Apaza et al ( 18 ) investigated using iron ore residue for micro-coating cold asphalt mix. The results met the mixture use requirements with use limitation in 20% of the total aggregates.…”

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confidence: 99%

Viability of Asphalt Mixtures with Iron Ore Tailings as a Partial Substitute for Fine Aggregate

de Moraes,

Neto,

Lucena

et al. 2023

Transportation Research Record: Journal of the Transportation R

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Dark colors aggravate the absorption and accumulation of heat in urban centers in the layers of asphalt coating. These problems can be minimized by incorporating materials that increase the albedo on these pavements. The use of waste in the industry has been encouraged, and an alternative is iron ore tailing (IoT), whose material comes from processing iron ore. The circular economy encourages a change in waste disposal after project decommissioning, encouraging the transformation, reuse, and recycling of waste. Therefore, this research investigated the influence of percentages of IoT in the contents (7.5%, 10.0%, and 12.5%) as a substitute for fine natural aggregate on hot asphalt mixtures’ mechanical and thermal performance. The statistical variance test (ANOVA) was used to validate the obtained data. An economic analysis concerning the costs of production and recovery of asphalt mixtures was carried out using the Present Net Value. Asphalt mixtures with IoT were evaluated with regard to the environmental aspect using the circularity index. Among the asphalt mixtures analyzed, the one produced with 12.5% was the most viable. The results showed a gain in mechanical performance concerning tensile strength, resilient modulus, fatigue, and permanent deformation of this mixture, as well as a reduction in production costs per kilometer of highway. The use of 12.5% provided a greater circularity and a reduction of the surface temperature of the pavement by 2.9°C. IoT is viable in constructing highways close to places that produce iron ore.

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Characterisation of magnesite mine tailings as a construction material

Shanmugasundaram

Shanmugam

2021

Environ Sci Pollut Res

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Evaluation of the performance of iron ore waste as potential recycled aggregate for micro-surfacing type cold asphalt mixtures

Cited by 23 publications

References 8 publications

Study of long‐term skid and wear resistance of waterborne epoxy resin‐SBR compound modified emulsified asphalt microsurfacing

Study of long‐term skid and wear resistance of waterborne epoxy resin‐SBR compound modified emulsified asphalt microsurfacing

Viability of Asphalt Mixtures with Iron Ore Tailings as a Partial Substitute for Fine Aggregate

Characterisation of magnesite mine tailings as a construction material

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