New Measurement of Thermal Properties of Superpave Asphalt Concrete

Luca, Joseph; Mrawira, Donath

doi:10.1061/(asce)0899-1561(2005)17:1(72)

Cited by 118 publications

(30 citation statements)

References 9 publications

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“…The heat flux at the upper boundary of the computational (Luca and Mrawira, 2005); c (Jean and Jean-Marie, 2005); d (Lu et al, 2006); Density for subgrade is dry density. domain shown in (b) is the combined heat flow from convection, irradiation, and SR absorption.…”

Section: Heat Flow At the Pavement Surfacementioning

confidence: 99%

Modeling the temperature and stress distributions in rigid pavements: Impact of Solar Radiation absorption and heat history development

Qin

Hiller

2011

KSCE Journal of Civil Engineering

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This study describes the impact of the absorption of Solar Radiation (SR) on temperatures and subsequent thermal stress development in Jointed Plain Concrete Pavements (JPCP). A one-dimensional heat transfer model is proposed to predict the temperature distribution through the slab depth. In this model, the inputted SR has features with both deterministic and probabilistic features. The deterministic factor is the monthly mean observed SR. The probabilistic component is computed by assuming that the monthly SR's variation between the maximum and minimum observed radiations follow a random normal distribution, whose standard deviation depends on the uncertainties of the observed monthly SR. Considering that the amount of SR absorption may be inherited from both within and under the slab, we study the impact of the SR history on the temperature and thermal-induced stresses through the slab. The results show that when the local weather shifts from sunny day to cloudy day or vice versa, the maximum temperature and JPCP's thermal stresses shift by up to 5 o C and 0.3 MPa, respectively. Other than the SR, we also estimate the influences of the sunrise/sunset times and of the pavement surface absorptivity on rigid pavements.

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Section: Heat Flow At the Pavement Surfacementioning

confidence: 99%

Modeling the temperature and stress distributions in rigid pavements: Impact of Solar Radiation absorption and heat history development

Qin

Hiller

2011

KSCE Journal of Civil Engineering

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“…2e). The WT method is effective in the separation of connected aggregates and is widely used by many researchers [21][22][23][24]. The WT finds "catchment basins" and "watershed ridge lines" in the image by treating them as a surface where light pixels were high and dark pixels are low.…”

Section: Identifying Aggregate Particlesmentioning

confidence: 99%

Development of a Size-Based Multiple Erosion Technique to Estimate the Aggregate Gradation in an Asphalt Mixture

Saensomboon¹,

Sangpetngam²

2017

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Abstract. Image processing (IP) techniques have recently been applied in the field of asphalt materials to help identify aggregate particles and measure their geometrical information based on sectional images of the material. This study examined IP techniques to improve the accuracy of analyzing the size distribution of aggregates in an asphalt mixture, and proposed two new methods: seven-layer overlaying (SLO) and size-based multiple erosion (SBME) to solve the problem of identifying connected aggregate particles that often occurs in typical IP applications. The proposed methods were tested for their effectiveness with a typical IP method using a referenced sectional image of asphalt mixture. Both the proposed methods successfully improved the accuracy of detection (number and size distribution) of aggregate particles, but the SBME approach was superior over the SLO method.

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“…To this aim, the density value reported in Table 1 was adopted (2275 kg m À 3 ) while the specific heat capacity was assumed constant and equal to 0.880 kJ kg À 1 K À 1 [38]. Starting from the equivalent thermal inertia previously derived, the equivalent thermal conductivity resulted 0.563 Wm À 1 K À 1 and the thermal diffusivity 2.8 Á 10 À 7 m 2 s À 1 .…”

Section: Evaluation Of Ignition Parameters and Burning Rate Of Convenmentioning

confidence: 99%

Characterization of thermal properties and combustion behaviour of asphalt mixtures in the cone calorimeter

Bonati

Rainieri

Bochicchio

et al. 2015

Fire Safety Journal

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New Measurement of Thermal Properties of Superpave Asphalt Concrete

Cited by 118 publications

References 9 publications

Modeling the temperature and stress distributions in rigid pavements: Impact of Solar Radiation absorption and heat history development

Modeling the temperature and stress distributions in rigid pavements: Impact of Solar Radiation absorption and heat history development

Development of a Size-Based Multiple Erosion Technique to Estimate the Aggregate Gradation in an Asphalt Mixture

Characterization of thermal properties and combustion behaviour of asphalt mixtures in the cone calorimeter

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