Characterization and correlation analysis of mechanical properties and electrical resistance of asphalt emulsion cold-mix asphalt

Li, Rui; Leng, Zhen; Wang, Yong-Li; Zou, Fuliao

doi:10.1016/j.conbuildmat.2020.119974

Cited by 23 publications

(12 citation statements)

References 38 publications

(55 reference statements)

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“…VMA is an air void between the aggregates of the compacted pavement, including the space packed with bitumen, and it is the available space to hold bitumen and the volume of air voids. , The aggregate gradation, mineral powder content, bitumen content, and compacting power can significantly affect VMA. , Figure presents the VMAs of OGFCs containing different fibers. The results show that the VMAs were slightly different among the three mixtures, which decrease with the increase of the bitumen content at the same aggregate gradation.…”

Section: Results and Discussionmentioning

confidence: 99%

“…VMA is an air void between the aggregates of the compacted pavement, including the space packed with bitumen, and it is the available space to hold bitumen and the volume of air voids. 21 , 22 The aggregate gradation, mineral powder content, bitumen content, and compacting power can significantly affect VMA. 23 , 24 Figure 5 presents the VMAs of OGFCs containing different fibers.…”

Section: Results and Discussionmentioning

confidence: 99%

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Effects of Fiber Type on the Mechanical Properties of the Open-Graded Friction Course Mixture

Wang

Cai

et al. 2022

ACS Omega

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The open-graded friction courses (OGFCs) have a large number of interconnected voids, which may cause serious water damage to the pavement. Hence, the road performance needs to be investigated. In this study, the mechanical properties of OGFCs containing two different fibers (lignin and mineral fiber) were investigated. Based on the procedure proposed by the Chinese specification JTG F40-2004, OGFCs were designed with the asphalt content between 4.1 and 4.7 wt % to find the optimal asphalt content (OAC). The mesh-basket draindown test was used to check the fiber’s stabilization and absorption of bitumen. OGFCs containing the lignin/mineral fiber with OAC would be preferred in terms of the bulk specific gravity. These results indicate that the fiber can bring higher air voids to the OGFCs, and the different specific gravities of fibers may primarily account for the result. Both the lignin and mineral fibers can bring much more asphalts padded in the pores of mineral aggregates and subsequently larger OAC in OGFCs due to their higher asphalt absorption. Performance experiments were carried out to check the dynamic stability and moisture susceptibility of OGFCs containing the lignin/mineral fiber. The study suggests that the lignin and mineral fiber can be used to adjust the internal environment of OGFCs, enhancing the moisture damage resistance and improving the rutting resistance of OGFCs at high temperatures.

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Section: Results and Discussionmentioning

confidence: 99%

“…VMA is an air void between the aggregates of the compacted pavement, including the space packed with bitumen, and it is the available space to hold bitumen and the volume of air voids. 21 , 22 The aggregate gradation, mineral powder content, bitumen content, and compacting power can significantly affect VMA. 23 , 24 Figure 5 presents the VMAs of OGFCs containing different fibers.…”

Section: Results and Discussionmentioning

confidence: 99%

Effects of Fiber Type on the Mechanical Properties of the Open-Graded Friction Course Mixture

Wang

Cai

et al. 2022

ACS Omega

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“…Under heavy traffic loads, asphalt pavements are vulnerable to surface distress such as rutting, fatigue cracking, thermal cracking, and moisture damage (Li et al, 2020;Jiang et al, 2022). The ITSM test was performed to examine the asphalt mixtures' ability to withstand cracking at moderate temperatures.…”

Section: Indirect Tensile Stiffness Modulus (Itsm) Testmentioning

confidence: 99%

Application of paper sludge ash and incinerated sewage ash in emulsified asphalt cold mixtures

et al. 2023

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Certain disadvantages could have appeared while using hot mix asphalt (HMA), such as the release of unhealthy gases into the environment (environmental issues), difficulty in sustaining the temperature over long distances (logistical issues), and consuming a sufficient amount of energy while preparing and laying down (practical and economic issues). To overcome the aforementioned issues, this study aimed to develop rapid-curing emulsified asphalt cold mixes (EACM) comprising a cementitious filler made from industrial by-product materials. Paper sludge ash (PSA) is used as an active filler for application in the EACM rather than conventional mineral filler. Additionally, to maximize the effect of PSA’s hydraulic activity, incinerated sewage ash (ISA) is utilized as an activator at a concentration of 0%–4% by mass of the aggregates. The results demonstrate that the use of waste PSA significantly improves the indirect tensile stiffness modulus (ITSM) by around 10 times more after 2 days than the traditional emulsified asphalt cold mixes. In addition, the improvement in ITSM was around 30% and 65% for 6%PSA+1%ISA and 6%PSA+4%ISA mixes, respectively. Furthermore, the rutting for the 6%PSA+1%ISA and 6%PSA+4%ISA mixes decreased to around 19% and 11% in comparison to the traditional 131-pen HMA. The formation of hydration products and rapid demulsification of asphalt emulsion, which results in binding within the mixtures, are responsible for the increased ITSM and rutting resistance. As a result, environmental issues are minimized, and energy preservation may be maintained.

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“…The nonlinear-least square minimization method was used to fit the test data to the MM model. Several studies used this model to analyse the curing behaviour of CBEM [20][21][22]52]. In this study, moisture loss, Marshal stability, Marshal quotient, RMS, ITS, and ITSR were considered as responses and these are analyzed concerning curing time.…”

Section: Michaelis-menten (Mm) Modelmentioning

confidence: 99%

“…Different mathematical models are being used to understand the curing behaviour of CBEM, i.e., Exponential [19], Mechaelis-Menten (MM) [19][20][21][22], Strength-Maturity model [23][24][25][26]. The Exponential and Mechaelismenten model demonstrates the evolution of mechanical properties of CBEM at specified curing temperature by considering curing time as a factor [19], in which MM model was found effective in characterizing the evolution of mechanical properties of cold bitumen emulsion mix [22]. The Strength-Maturity model consider both the curing time and curing temperature in prediction of mechanical properties of CBEM [24].…”

Section: Introductionmentioning

confidence: 99%

Impact of curing on the volumetric and mechanical properties of cold bitumen emulsion mix

Prasad

Suman

2023

Eng. Res. Express

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Cold bitumen emulsion mix (CBEM) is an emerging sustainable material for constructing the base or surface layer of flexible pavements, reducing energy consumption and global warming effects compared to hot mix asphalt. The main challenges associated with CBEM are low initial strength, moisture susceptibility, etc. This is primarily due to water encapsulation. The curing process allows the water to evaporate gradually over time, improving mechanical properties. This study investigates CBEM’s volumetric and mechanical properties under different curing conditions. CBEMs were prepared using low (50 blows) and high (75 blows) compaction efforts and cured at 25, 40, and 55 °C for 1 to 28 days. In volumetric characteristics, the air voids and voids in mineral aggregates decreased slightly with curing, while total binder volume decreased. Effective binder volume and voids filled with binder increased slightly, then decreased. The mechanical properties, i.e., Marshal Stability, Marshal Quotient, Indirect Tensile Strength (ITS), and Moisture Susceptibility parameters like the Indirect Tensile Strength Ratio (ITSR) and Retained Marshal Stability (RMS), were found to improve over time at each curing temperature. Using a high curing temperature further improved the mechanical characteristics of CBEM. The curing process was decelerated in case of CBEM prepared by high compactive efforts compared to CBEM prepared by low compactive efforts. The Michaelis-Menten model can be used to analyze moisture loss growth and the development of mechanical properties over time. The strength-maturity model can be developed by using ITS as strength parameters. There was a strong correlation between all mechanical characteristics and moisture loss.

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Characterization and correlation analysis of mechanical properties and electrical resistance of asphalt emulsion cold-mix asphalt

Cited by 23 publications

References 38 publications

Effects of Fiber Type on the Mechanical Properties of the Open-Graded Friction Course Mixture

Effects of Fiber Type on the Mechanical Properties of the Open-Graded Friction Course Mixture

Application of paper sludge ash and incinerated sewage ash in emulsified asphalt cold mixtures

Impact of curing on the volumetric and mechanical properties of cold bitumen emulsion mix

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