In support of the initiatives for implementing the new MechanisticEmpirical Pavement Design Guide (MEPDG) in Iowa, a preliminary sensitivity study was undertaken to assess the comparative effect of design input parameters pertaining to material properties, traffic and climate on performance of two existing flexible pavements in Iowa with relatively thick Asphalt Concrete (AC) layers. A total of...

asphalt modification/reinforcement has received considerable attention as viable solutions to enhance flexible pavement performance. this is mainly prompted by the unsatisfactory performance of traditional road materials exposed to dramatic increases and changes in traffic patterns. this paper presents the evaluation of fatigue behaviour of nano reinforced stone mastic asphalt mixtures. fatigue...

Pavement maintenance plays a significant role in megacities. Managing complaints and scheduling road reviews are the two concerns under intelligent pavement management system (PMS) plan. In contrast, if damages not treated immediately, they will increase over time. By leveraging accurate data from sensors, smart PMS improve capability, support sustainability, drive economic growth network. This...

Abstract One of the most prevalent challenges faced in road construction is pavement distresses produced by ageing asphalt pavement, which resulted fatigue cracking. Fatigue cracking regarded as one primary failure types when tension bituminous layer low due to high vehicle traffic load repetition. The study focuses on evaluating performance coconut fiber modifier bitumen penetration grade 60/7...

Porous low noise wearing courses are popular in Switzerland. However, after 4 to 5 years service distresses appear mostly due raveling. Measuring the susceptibility loss of aggregates is therefore considered a desirable step quality control. The research project was able demonstrate problematic nature scuffing test according EN 12697–50. Instead, it has been shown that simple pull-off many adva...

Introduction: Research suggests that Blacks in the United States (U.S.) are vulnerable to distress (e.g, depression, anxiety, and somatization) from a wide range of psychosocial factors (CDC, 2004, 2010). Yet the way in which Black Americans cope with their emotions and behaviors is an understudied topic. The present study investigated whether psychological inflexibility and mindfulness, two wi...

Introduction: The intensive care unit is a stressful environment due to the high mortality rate of patients, the occurrence of moral problems and working in a tense atmosphere. Faced with these conditions, nurses may be exposed to moral distresses. Therefore, it is important to study the moral distresses that nurses face in these units. Objective: This study aimed to determine the level of ...