Effect of type of aggregate on permanent deformation of bituminous concrete mixes

Singh, Maninder; Kumar, Praveen; Anupam, Aditya Kumar

doi:10.1080/14680629.2015.1091374

Cited by 18 publications

(5 citation statements)

References 15 publications

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“…To analyze the effect of temperature on viscoelasticity of asphalt mixtures and compare viscoelasticity between different asphalt mixtures, the static creep tests of DBFAM, SBSAM, and AM were performed at 10 • C, 20 • C, 30 • C, 40 • C, and 50 • C. For the static creep tests, the cylindrical asphalt mixture specimens with 100 mm in diameter and 63.5 mm in height were fabricated accordance with the previous researches [30][31][32][33]. And a contact pressure of 200 kPa (σ 0 ) was applied on these specimens after 5-hour drying at experimental temperature.…”

Section: Experimental Methodsmentioning

confidence: 99%

Viscoelastic Properties of Asphalt Mixtures with Different Modifiers at Different Temperatures Based on Static Creep Tests

Cheng

et al. 2019

Applied Sciences

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To obtain the viscoelastic parameters of asphalt mixtures and analyze the effect of temperatures and modifiers on viscoelastic properties of asphalt mixtures, the creep compliances of the neat asphalt mixture (AM), compound diatomite and basalt fibers reinforced asphalt mixture (DBFAM), and styrene-butadiene-styrene modified asphalt mixture (SBSAM) were tested and calculated by the static creep tests. And the creep compliances of the three asphalt mixtures at −20 °C, −10 °C, and 0 °C are deducted by the time–temperature equivalence principle (TTEP) and Arrhenius equation. Further, the relaxation modulus of the three asphalt mixtures from −20 °C to 50 °C at 10 °C increments are calculated by the convolution integral and Simpson method. Subsequently, the Burgers model, the generalized Kelvin model, and the generalized Maxwell model are applied to analyze the viscoelastic properties of the three asphalt mixtures at different temperatures. The results show that the generalized Kelvin model and the generalized Maxwell model are superior to the Burgers model in describing the variation of viscoelastic properties of asphalt mixtures with loading time. At low temperatures, asphalt mixtures have excellent properties in resisting permanent deformation and releasing internal stress. Besides, the addition of SBS modifier and compound diatomite and basalt fibers modifier can significantly raise the viscosity η1 and the elastic modulus E1 of the asphalt mixture, respectively.

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Section: Experimental Methodsmentioning

confidence: 99%

Viscoelastic Properties of Asphalt Mixtures with Different Modifiers at Different Temperatures Based on Static Creep Tests

Cheng

et al. 2019

Applied Sciences

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“…Consensus properties-such as shape, texture, and angularity of aggregates-can be controlled by adopting different production processes, while the aggregate source properties-like hardness, toughness, and soundness-are inherent characteristics related to the source of the aggregate particles, mineral constituents, and geological formations. Studies have shown that aggregate properties play a meaningful role in the quality and performance of an asphalt concrete including aggregate skeleton integrity (Wu et al 1998;Chowdhury et al 2001;Singh et al 2013), permanent deformation (Pan et al 2006;Huang et al 2009;Singh et al 2016;Dulaimi et al 2017), stiffness and resilient modulus (Monismith 1970;Pan et al 2005;Bennert 2009), and moisture susceptibility (Hicks 1991;Kakade et al 2017).…”

Section: Role Of Mineral Aggregates In Asphalt Concretementioning

confidence: 99%

Verification of current LA abrasion test criterion for aggregate degradation in airfield asphalt pavements

Garcia,

Cox

2024

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Low-quality mineral aggregates can potentially lead to production, construction, and long-term performance-related problems in asphalt concrete pavements. Therefore, effective qualification criteria for mineral aggregates are paramount. This study was performed to investigate the effectiveness of the Los Angeles abrasion (LAA) test to assess the abrasion resistance of coarse aggregates commonly used in airfield asphalt paving. The LAA test acceptance criteria currently specified by state departments of transportation were examined and compared to the current Department of Defense criterion. Additionally, recent experiences during a forensic evaluation to identify potential sources of excessive presence of foreign object debris on an airfield runway are also briefly discussed in this report. The LAA test and associated acceptance criterion in Unified Facilities Guide Specification (UFGS) 32 12 15.13 were evaluated by testing 24 aggregate sources from various US locations. Also, the Micro-Deval abrasion test was performed as a surrogate abrasion resistance test. Sufficient evidence was not found to suggest adjustments to current LAA test criterion or to recommend the use of an alternative abrasion test. The current UFGS specifications should be improved to provide a more thorough aggregate testing protocol and detailed guidelines regarding aggregate sampling and testing frequency during design and construction of asphalt pavements.

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“…In asphalt pavement, permanent deformation, also known as rutting, generally indicates permanent depressions on the asphalt surface that can occur in the paths of pavement wheels [58]. Permanent deformation could exist in the HMA or underlying asphalt layers [59].…”

Section: Evaluation Of Permanent Deformationmentioning

confidence: 99%

Effect of Recycled Concrete Aggregate Addition on the Asphalt Mixtures Performance: ITZ Area, Microstructure, and Chemical Analysis Perspectives

Al-Bayati,

Jadaa,

Tighe

2024

Recycling

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The importance of environmental consciousness and sustainability is increasing among transportation governing bodies worldwide. Many government bodies are concerned with maximizing the usage of recycled substances in road construction. Therefore, assessing the effect of recycled materials consumption is essential, mainly when designing new ‘green’ pavement types. The primary objective of this study is to investigate the impact of different treatments on improving the interfacial transition zone (ITZ) of coarse recycled concrete aggregate (CRCA) and its application in asphalt mixes. Such an aim is accomplished by enhancing its physical and mechanical characteristics, as well as its microstructure. The surface morphology, chemical composition, and intermix phases of the ITZ area and calcium silicate hydrate (CSH) compounds for CRCA were evaluated using scanning electron microscopy (SEM), an energy-dispersive X-ray analyzer (EDAX), and X-ray diffraction analysis (XRD). The performance of asphalt mixtures that included treated and untreated CRCA was also examined using different tests. It was found that heat treatment is an effective technique for enhancing the ITZ. However, cracks were seen in the mortar of CRCA when exposed to high temperatures (500 °C), which adversely affects the characteristics of the mortar. Acid treatment appeared to be an effective approach for improving the ITZ area. Nevertheless, the treatment that used acetic acid, a weak acid, was more effective than HCl acid, a strong acid. The outcomes revealed that the ITZ microstructure is significantly enhanced under different treatment types; however, microstructure improvements mainly included increased surface homogeneity and CSH compounds and a reduced Ca/Si ratio. It was also found that the asphalt mixtures with different proportions of untreated CRCA exhibited enhanced resistance to rutting. Furthermore, their tensile strength ratio (TSR) values were above the minimal level requirements. Moreover, the asphalt mixture with 30% CRCA, which was treated with various treatment methods, demonstrated a significant improvement in the mixtures’ mechanical properties; therefore, its application is highly successful and an environmentally friendly solution.

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Effect of type of aggregate on permanent deformation of bituminous concrete mixes

Cited by 18 publications

References 15 publications

Viscoelastic Properties of Asphalt Mixtures with Different Modifiers at Different Temperatures Based on Static Creep Tests

Viscoelastic Properties of Asphalt Mixtures with Different Modifiers at Different Temperatures Based on Static Creep Tests

Verification of current LA abrasion test criterion for aggregate degradation in airfield asphalt pavements

Effect of Recycled Concrete Aggregate Addition on the Asphalt Mixtures Performance: ITZ Area, Microstructure, and Chemical Analysis Perspectives

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