Estimation of phase angles of asphalt mixtures using resilient modulus test

Venudharan, Veena; Biligiri, Krishna Prapoorna

doi:10.1016/j.conbuildmat.2015.02.061

Cited by 18 publications

(5 citation statements)

References 9 publications

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“…Stiffness and elasticity criteria are important to consider during pavement design [41,42]; stiffness is reflected by the resilient modulus. A higher resilient modulus indicates that a structure can withstand more vibration caused by traffic without cracking.…”

Section: Discussionmentioning

confidence: 99%

Mechanical Properties of Cold Mix Asphalt (CMA) Mixed with Recycled Asphalt Pavement

et al. 2022

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From the perspective of sustainability and environmental concerns, the use of cold-mix asphalt (CMA) and recycled asphalt pavement (RAP) is more advantageous than the use of hot mix asphalt (HMA) and warm mix asphalt (WMA). Some researchers used a mixture of CMA and RAP to improve the mechanical properties of pavement and made it more economical. However, only a few studies have focused on using a high content of RAP—particularly 100% RAP—as the virgin aggregate. Therefore, this study aims to analyse cold-mix asphalt (CMA) using 100% recycled asphalt pavement (RAP) instead of virgin aggregate raw materials and to determine the best mixture for the production of environmentally friendly asphalt. It is necessary to investigate the performance of CMA mixed with RAP in terms of the resilient modulus, indirect tensile strength, fatigue and rutting resistance. In this study, the percentage of bitumen emulsions added is 2%, 2.5%, 3%, 3.5%, and 4%, along with 100% RAP material. The results indicate that the fatigue life of the RAP mixture increased by 49.34% with the addition of bitumen emulsion (BE) from 2% to 4%, while the wheel tracking test experienced a decrease in rutting depth along with an increase in BE dose of 4%, which was 9 mm. The mixture containing 4% asphalt emulsion has the best performance. The results suggested that increasing the BE dosage increases the resistance against rutting and fatigue.

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Section: Discussionmentioning

confidence: 99%

Mechanical Properties of Cold Mix Asphalt (CMA) Mixed with Recycled Asphalt Pavement

et al. 2022

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“…In this direction, ratios of M 00 r /M r (loss moduli or M r sin/ Mr to M r ) and M 0 r /M r (storage moduli or M r cos/ Mr to M r ) were estimated that can clearly explain the energy stored within a mix to counter rutting distress at appropriate temperatures and frequencies. Note that / Mr for all the mixtures at corresponding temperatures and frequencies was estimated using the concept reported in [32]. Later, / Mr of different mixes were used to calculate M 0 r and M 00 r .…”

Section: Correlations Of Viscoelastic M R Mix Parameters With Binder mentioning

confidence: 99%

Binder rheological predictive models to evaluate rutting performance of asphalt mixtures

Meena

Biligiri

2016

Construction and Building Materials

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“…It is worth mentioning that the modulus of the AC layer under 15~35°C is usually used in pavement structure design in many countries (IRC, 2012;Corté & Goux, 1996;AASHTO, 1993;Ministry of Transport of China, 2006;Austroads, 2017). Consequently, a typical constant value of 2000 MPa was defined as the modulus of the AC layer under the specified temperature range based on the previous studies reflecting on results of laboratory tests (Austroads, 2017;Brown & Foo, 1991;Fakhri & Ghanizadeh, 2014;IRC, 2012;Lavasani et al, 2015;Ministry of Transport of China, 2006;Shafabakhsh & Tanakizadeh, 2016;Venudharan & Biligiri, 2015). At the same time, the modulus of the base layer was considered as a variable ranging from 500 MPa to 6000 MPa according to the findings presented in Section 1, that is to say, R m is distributed in a range from 0.25 to 3.…”

Section: Pavement Structure and Materials Propertiesmentioning

confidence: 99%

Influence of Modulus of Base Layer on The Strain Distribution for Asphalt Pavement

Yao

Jiang

et al. 2021

BJRBE

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In order to investigate the influence of modulus of the base layer on the strain distribution for asphalt pavement, the modulus ratio of the base layer and the AC layer (Rm) is introduced as a controlled variable when keeping modulus of the AC layer as a constant in this paper. Then, a three-layered pavement structure is selected as an analytical model, which consists of an AC layer with the constant modulus and a base layer with the variable modulus covering the subgrade. A three dimensional (3D) finite element model was established to estimate the strains along the horizontal and vertical direction in the AC layer under different Rm. The results show that Rm will change the distribution of the horizontal strains along the depth in the AC layer; the increase of Rm could reduce the maximum tensile strain in the AC layer, but its effect is limited; the maximum tensile strain in the AC layer does not necessarily occur at the bottom, but gradually rises to the middle with the increase of Rm. Rm could significantly decline the bottom strain in the AC layer, and there is a certain difference between the bottom and the maximum strain when Rm is greater than or equal to one, which will enlarge with increasing Rm. Rm could change the depth of the neutral axis in the AC layer, and the second neutral axis will appear at the bottom of the AC layer under a sufficiently large Rm. The average vertical compressive strain in the AC layer will significantly enlarge with the increase of Rm.

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Estimation of phase angles of asphalt mixtures using resilient modulus test

Cited by 18 publications

References 9 publications

Mechanical Properties of Cold Mix Asphalt (CMA) Mixed with Recycled Asphalt Pavement

Mechanical Properties of Cold Mix Asphalt (CMA) Mixed with Recycled Asphalt Pavement

Binder rheological predictive models to evaluate rutting performance of asphalt mixtures

Influence of Modulus of Base Layer on The Strain Distribution for Asphalt Pavement

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