Investigating the effect of filler types on thermodynamic parameters and their relationship with moisture sensitivity of asphalt mixes

Sakanlou, Farhad; Shirmohammadi, Hamid; Hamedi, Gholam Hossein

doi:10.1617/s11527-018-1166-3

Cited by 21 publications

(12 citation statements)

References 17 publications

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“…Moreover, in a research study, Xie, et al [18] shows that treated fly ash with coupling agent (CFAM) filler leads to increased fatigue life, positive effect on creep, increased load bearing capacity and increased indirect tensile strength in asphalt mixtures. From the thermodynamic point of view, Sakanlou, Shirimohamdi and Hamedi [19] in their research, at first, investigated the role of various fillers on moisture sensitivity of asphalt mixes, and then thermodynamic parameters were calculated with and without considering filler in dry and wet states. Finally, using statistical analyses, the relationship between important thermodynamic parameters was calculated with and without considering the effect of filler to determine whether the method used in the lack of the effect of filler in surface free energy method requires to be modified or not.…”

Section: Literature Reviewmentioning

confidence: 99%

Comparing the Effect of Nanomaterial and Traditional Fillers on the Asphalt Mixture Properties

2019

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Several parameters affect asphalt mix performance against loading and environmental conditions. Minor changes in the filler amount or type can cause obvious changes in the asphalt mixture properties. Accordingly, in this research attempts have been made to optimally make asphalt mixture strong against loading and environmental conditions by changing the type, size and percentage of filler used in asphalt mixture. In this line, the effect of two types of cement and nano-silica fillers in two different percentages was investigated and compared as an alternative for part of the main filler in asphalt mixture samples made by two types of limestone and granite aggregate. Cement filler by 2% and 4% of the aggregate mass as the alternative for part of the main filler is added to stone materials before mixing with binder, but nano-silica filler by 2% and4 % of weight of the binder as the alternative for part of the main filler is added to binder and a modified and homogeneous binder is produced using a high speed mixer. In the following, considering the optimum binder content for each mixture, resilient modulus tests were conducted to determine the strength performance against loading and indirect tensile strength ratio was used to determine moisture sensitivity of asphalt mixtures. Results obtained from resilient modulus tests show that the use of nano-silica and cement has been capable of favorably improving the resilient modulus of samples containing these two types of fillers. The improvement of the resilient modulus of samples containing nano-silica is very significant. Additionally, the studies conducted based on the indirect tensile strength ratio show that both types of alternative fillers, especially cement has been capable of desirably improve the strength of asphalt mixtures against moisture damage.

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Section: Literature Reviewmentioning

confidence: 99%

Comparing the Effect of Nanomaterial and Traditional Fillers on the Asphalt Mixture Properties

2019

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“…One of the most commonly used methods for reducing the moisture sensitivity in asphalt mixtures is the utilization of antistripping materials to modify the properties of aggregate [20][21][22] or asphalt binder [23][24][25][26]. In fact, for obtaining good adhesion in an aggregate-asphalt binder system, the surfaces of both should be changed using a suitable additive in order to enhance the oil friendship and hydrophobicity characteristics of aggregates and asphalt binder cohesion [27,28].…”

Section: Introductionmentioning

confidence: 99%

“…Results showed that SFE was decreased by the mentioned additive. Sakanlou et al [21] reported that adhesion free energy of aggregate-asphalt binder was reduced using hydrated lime. Hamedi [22] examined the impact of nanocoating on the aggregate surface in exploring moisture damage, and results presented using the SFE concept showed that the differences between AFE in the presence of water and dry condition were decreased by the use of nanoparticles and, therefore, the stripping phenomenon was reduced.…”

Section: Introductionmentioning

confidence: 99%

Improving the Moisture Sensitivity of Asphalt Mixtures by Simultaneous Modification of Asphalt Binder and Aggregates with Carbon Nanofiber and Carbon Nanotube

Nikookar

Movahhed

Ayoubinejad

et al. 2021

Advances in Civil Engineering

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Moisture sensitivity of asphalt mixtures may cause damage due to cohesion in asphalt binder membrane and adhesion between aggregate and asphalt binder that result in considerable damage to the pavements. Therefore, by determining the adhesion quality in a modified aggregate-asphalt binder system, one can choose the suitable material compositions to decrease the moisture sensitivity of mixtures. In this study, the effects of modified asphalt binder with carbon nanofiber and modified aggregates with carbon nanotube on the moisture sensitivity of asphalt mixtures were simultaneously explored. For investigating the moisture sensitivity, the indirect tensile strength test and surface free energy concept were implemented. The results of the indirect tensile strength test revealed that modification of asphalt binder and aggregates with carbon nanofiber and carbon nanotube, respectively, increased the indirect tensile strength and tensile strength ratio values of mixtures. The results of surface free energy indicated that using carbon nanofiber and carbon nanotube enhanced the adhesion free energy of the aggregate-asphalt binder system. Moreover, utilizing carbon nanofiber to modify asphalt binder enhanced the cohesion free energy values in the asphalt binder membrane. Also, carbon nanofiber and carbon nanotube brought detachment energy of the system toward zero, indicating less desire for the mixtures to be stripped. Generally, investigations performed by the two methods showed that covering aggregates by carbon nanotube as well as utilizing carbon nanofiber as an asphalt binder modifier had a positive impact on decreasing moisture sensitivity of asphalt mixtures.

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“…In recent years, many researches have been done on asphalt mastic with various types of filler including Portland cement [17,18,19], hydrated lime [17,19,20,21], fly ash [20,22], natural and synthetic zeolites derived from fly ash [23,24,25,26], volcanic ash [27], oil shale ash [28], rice straw ash [29], red mud [30,31], limestone dust [19], glass powder [31], brick dust [31], carbide lime [31], copper tailings [21,31], natural bentonite clay [32], ladle furnace slag [33], silica fume [21], magnetite [34], waste stone sawdust [35] and steel slag [36]. Asphalt mixtures prepared using the same content of bitumen but different waste materials as fillers (glass powder, limestone dust, red mud, rice straw ash, brick dust, carbide lime and copper tailings) showed satisfactory mechanical and volumetric properties.…”

Section: Introductionmentioning

confidence: 99%

“…Recycled ladle furnace slag is beneficial to the volumetric properties, stiffness, indirect tensile strength and resistance to dynamic loading of asphalt concrete. Active filler including hydrated lime and cement had the potential to improve the resistance to moisture damage [17,18,19]. The usage of micro filler and nano-clay had shown high reinforcing potential in bitumen mastics [27,32].…”

Section: Introductionmentioning

confidence: 99%

Rheological and Interaction Analysis of Asphalt Binder, Mastic and Mortar

et al. 2019

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This paper investigated the rheological properties of asphalt binder, asphalt mastic and asphalt mortar and the interaction between asphalt binder, mineral filler and fine aggregates. Asphalt binder, mastic and mortar can be regarded as the binding phase at different scales in asphalt concrete. Asphalt mastic is a blend of asphalt binder and mineral filler smaller than 0.075 mm while asphalt mortar consists of asphalt binder, mineral filler and fine aggregate smaller than 2.36 mm. The material compositions of mastic and mortar were determined from the commonly used asphalt mixtures. Dynamic shear rheometer was used to conduct rheological analysis on asphalt binder, mastic and mortar. The obtained test data on complex modulus and phase angle were used for the construction of rheological master curves and the investigation of asphalt-filler/aggregate interaction. Test results indicated a modulus increase of three- to five-fold with the addition of filler and a further increase of one to two orders of magnitude with cumulative addition of fine aggregates into asphalt binder. Fine aggregates resulted in a phase change for mortar at high temperatures and low frequencies. The filler had stronger physical interaction than fine aggregate with an interaction parameter of 1.8–2.8 and 1.15–1.35 respectively. Specific area could enhance asphalt-filler interaction. The mastic and mortar modulus can be well predicted based on asphalt binder modulus by using particle filling effect. Asphalt mortar had a significant modulus reinforcement and phase change and thus could be the closest subscale in terms of performance to that of asphalt mixtures. It could be a vital scale that bridges the gap between asphalt binder and asphalt mixtures in multiscale performance analysis.

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Investigating the effect of filler types on thermodynamic parameters and their relationship with moisture sensitivity of asphalt mixes

Cited by 21 publications

References 17 publications

Comparing the Effect of Nanomaterial and Traditional Fillers on the Asphalt Mixture Properties

Comparing the Effect of Nanomaterial and Traditional Fillers on the Asphalt Mixture Properties

Improving the Moisture Sensitivity of Asphalt Mixtures by Simultaneous Modification of Asphalt Binder and Aggregates with Carbon Nanofiber and Carbon Nanotube

Rheological and Interaction Analysis of Asphalt Binder, Mastic and Mortar

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