A pure case study on moisture sensitivity assessment using tests on both loose and compacted asphalt mixture

2020 ◽  
Vol 239 ◽  
pp. 117817 ◽  
Author(s):  
Safeer Haider ◽  
Imran Hafeez ◽  
Syed Bilal Ahmed Zaidi ◽  
Muhammad Ali Nasir ◽  
M. Rizwan
Keyword(s):  
Asphalt Mixture ◽  
Moisture Sensitivity ◽  
Sensitivity Assessment ◽  
Pure Case

scholarly journals Assessment of Climate Change Vulnerability at the Local Level: A Case Study on the Dniester River Basin (Moldova)

2013 ◽  
Vol 2013 ◽  
pp. 1-13 ◽  
Author(s):  
Roman Corobov ◽  
Igor Sîrodoev ◽  
Sonja Koeppel ◽  
Nickolai Denisov ◽  
Ghennadi Sîrodoev
Keyword(s):  
Climate Change ◽  
Adaptive Capacity ◽  
Local Level ◽  
Housing Conditions ◽  
Socioeconomic Characteristics ◽  
Temperature And Precipitation ◽  
Sensitivity Assessment ◽  
Vulnerability To Climate Change ◽  
Relative Vulnerability

Vulnerability to climate change of the Moldavian part of the Dniester river was assessed as the function of exposure, sensitivity, and adaptive capacity of its basin’s natural and socioeconomic systems. As a spatial “scale” of the assessment, Moldova’s administrative-territorial units (ATUs) were selected. The exposure assessment was based on the climatic analysis of baseline (1971–2000) temperature and precipitation and projections of their changes in 2021–2050, separately for cold and warm periods. The sensitivity assessment included physiographical and socioeconomic characteristics, described by a set of specific indicators. The adaptive capacity was expressed by general economic and agricultural indicators, taking into consideration the medical provision and housing conditions. Through a ranking approach, the relative vulnerability of each ATU was calculated by summing its sensitivity and adaptive capacity ranks; the latter were obtained as combinations of their primary indicator ranks, arranged in an increasing and decreasing order, respectively. Due to lack of sound knowledge on these components' importance in overall assessment of vulnerability, their weights were taken as conventionally equal. Mapping of vulnerability revealed that ATUs neighboring to municipalities are the most vulnerable and need special attention in climate change adaptation. The basin’s “hotspots” were discussed with public participation.

Case Study of a Composite Layer with Large-Stone Asphalt Mixture for Heavy-Traffic Highways

2020 ◽  
Vol 146 (1) ◽  
pp. 04019040 ◽  
Author(s):  
Zila M. G. Mascarenhas ◽  
Matheus S. Gaspar ◽  
Kamilla L. Vasconcelos ◽  
Liedi L. B. Bernucci ◽  
Amit Bhasin
Keyword(s):  
Heavy Traffic ◽  
Asphalt Mixture ◽  
Composite Layer ◽  
Large Stone

Experimental investigation on performance of asphalt mixture with aggregate of acid migmatite – a case study

2019 ◽  
pp. 296-302
Author(s):  
Erhu Yan ◽  
Zhenyu Zhou ◽  
Yongchun Qin ◽  
Jie Wang ◽  
Songchang Huang ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Asphalt Mixture

Prediction of Fatigue Life of Steel-Slag Asphalt Concrete Based on Four Point Bending Test

2014 ◽  
Vol 599 ◽  
pp. 208-211
Author(s):  
Xin Yan Zhang ◽  
Liang Liang Tu ◽  
Yang Gao ◽  
Shan Li
Keyword(s):  
Fatigue Life ◽  
Asphalt Concrete ◽  
Steel Slag ◽  
Asphalt Mixture ◽  
Bending Test ◽  
Asphalt Pavements ◽  
Comprehensive Investigation ◽  
Moisture Sensitivity ◽  
Four Point Bending ◽  
Four Point Bending Test

Steel slag reserves of our country has reached 200 million tons and each year it will increase 100 million tons. Slag accumulation occupied a large number of enterprises space and made pollution to the environment. Since steel slag based asphalt pavements have been utilized for a certain history, their fatigue life necessitates comprehensive investigation imperatively. In this paper, the fatigue life of steel-slag asphalt mixture was tested through the four-point bending test. The results showed that steel slag prepared mixture was superior to limestone mixture after several freeze-thaws, with respect to moisture sensitivity, and was suitable for asphalt treated base (ATB). The fatigue life of slag asphalt mixture with low content limestone was longer.

Fiber-Reinforced Hot-Mix Asphalt: Idaho Case Study

2017 ◽  
Vol 2633 (1) ◽  
pp. 98-107 ◽  
Author(s):  
Ahmed Muftah ◽  
Amir Bahadori ◽  
Fouad Bayomy ◽  
Emad Kassem
Keyword(s):  
Laboratory Tests ◽  
Asphalt Mixture ◽  
Asphalt Mixtures ◽  
Fiber Reinforced ◽  
Flow Number ◽  
Indirect Tensile Test ◽  
Need To Evaluate ◽  
Indirect Tensile ◽  
The One

This paper presents the findings of a research study to determine the benefits of fiber-reinforced asphalt mixtures used to mitigate distresses observed in the field. Control asphalt mixture test sections were constructed on US-30 in Idaho, along with fiber-reinforced asphalt mixture test sections. Three types of fibers were evaluated: Fiber 1 (i.e., aramid and polyolefin fiber), Fiber 2 (i.e., wax-treated aramid fiber), and Fiber 3 (i.e., glass fiber). Several laboratory tests were conducted on laboratory-prepared test samples and extracted field cores. The laboratory tests included dynamic modulus, flow number, Hamburg wheel-track test, indirect tensile test, creep compliance, and semicircular bending, in addition to performance evaluation with AASHTOWare Pavement ME Design software. The laboratory results showed no significant improvement to the properties of asphalt mixtures at the fiber content recommended by the manufacturer. However, the performance of asphalt mixtures did improve at a fiber dosage higher than the one recommended by the manufacturer. This study demonstrated the need to evaluate different fiber contents when asphalt mixtures are designed, because the dosage recommended by the manufacturer may not be optimal for various asphalt mixtures.

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