Azam Amir

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• Phd Student
• Phd student at Shibaura Institute of Technology

Road infrastructure plays a critical role globally with substantial investments. However, roads deteriorate over time due to aging and various factors, necessitating effective maintenance strategies. A key challenge in data-driven maintenance planning is the absence of pavement condition data, which may result from a variety of factors, including h...

Pavement performance evaluation is an essential part of road asset management, enabling the planning of budgets and maintenance priorities. Road agencies all over the world have to deal with the challenge of accurately and reliably conducting pavement condition assessments for their networks as a first part of the evaluation process in the face of...

The growth in infrastructure and social development of a nation is heavily reliant on road infrastructure. This makes spending on road infrastructure maintenance a priority in countries all over the world which is important to make it possible for road infrastructure to achieve its design life. It also considerably reduces the cost of reconstructio...

ブータンはヒマラヤの山岳国であり、国土のほとんどが2,000m以上に位置する。そのため、移動において道路インフラが最も重要な位置づけである。しかし、国道数は十分でなく、迂回路が存在しない場合も多い。その上、ブータン道路局のDepartment of Surface Transport (DoST) の管理下には235橋の橋梁がある。つまり、橋梁は道路の連続性を担保する上で重要な役割を担っている。これらの橋梁を長期間使用するためには効率的な維持管理が必要だが、1)現状ブータンでの維持管理は適切とは言い難い。現在は事後保全が主流であるが、予算や人材の制限を考慮すると予防保全への転換が必要であり、その実現のために劣化予測は重要である。また、2)床版は輪荷重を直接支えるため、橋梁の主要部材の中でも最...

The construction industry bolsters the economy by developing infrastructure essential for various economic activities. Maintenance is crucial to ensuring infrastructure remains functional and sustainable. However, delays in maintenance, particularly in developing countries like Ethiopia, result in deterioration and higher repair costs. This study e...

Roads are very important in contribution of economic development and for growth as well as for social benefits especially in developing countries. Road maintenance is critical in retaining the value that is obtained from road transport. The role of road managers in making the right decisions under these circumstances is very crucial, due to the hig...

Deterioration is one of the key concerns in assessing bridge performance and is necessary to understand how bridges degrade with age for optimal maintenance budget allocation. The rate of deterioration varies across bridge types, with Laos predominantly featuring aging concrete slab bridges, concrete girder bridges, and steel truss bridges. It is i...

The safety and operability of bridges are key elements for ensuring the functionality of highway networks. However, in Bhutan, road bridges are aging and deteriorating faster than they are maintained. This may be due to the current practice of bridge prioritization for periodic maintenance by ranking based on bridge inventory data and bridge struc...

The increasing burden of road infrastructure maintenance management has prompted numerous countries to transition towards effective maintenance planning based on data-driven Pavement Maintenance Management Systems (PMMS). Establishing a robust data-driven PMMS initially requires a comprehensive understanding of influencing factors of pavement condi...

An efficient Pavement Maintenance Management System (PMMS) is crucial for cost-effective highway network management, ensuring optimal performance throughout the pavement's expected service life. The effectiveness of PMMS relies on precise pavement performance prediction models to plan future maintenance strategies. However, creating an accurate pav...

Best practices dictate that road maintenance plans be drawn up based on the pavement conditions determined by routine inspection. However, in many cases, the maintenance strategy is based on the experience of decision-makers, rather than the actual conditions. In Khyber Pakhtunkhwa Province, Pakistan, there are more than 3,000 km of provincial road...

Understanding the various types of pavement distress that can affect asphaltic pavements is essential for effective project-level maintenance management. By identifying and analyzing different distress types and their probability of occurrence, road authorities can develop targeted maintenance strategies that address specific issues and prolong the...

As with datasets in many fields, pavement management systems suffer from missing data, but machine learning techniques such as random forest analysis make imputation a viable solution. This study applied missForest, one implementation of random forest, to impute missing international roughness index (IRI), structural number (SN), and pavement condi...

Highways play a vital role in a nation's development. However, due to the focus of road authorities in some countries on the construction of new highways , existing highways are left unattended to. Less severe distresses that develop on these roads after short periods and can be remedied relatively cheaper are left to deteriorate further. This resu...

Road pavements are ideally designed to bear and withstand the expected loads and stresses from projected vehicular traffic. The two main parameters for designing a pavement are traffic loading and bearing capacity of road subgrade. There are other factors that influence the lifespan and resilience of the road pavement like the quality of the materi...

Best practices dictate that road maintenance plans be drawn up based on the pavement conditions determined by routine inspection. However, in many cases, the maintenance strategy is based on the experience of decision-makers, rather than the actual conditions. In Khyber Pakhtunkhwa Province, Pakistan, there are more than 3,000 kilometers of provinc...

Understanding the various types of pavement distress that can affect asphaltic pavements is essential for effective project-level maintenance management. By identifying and analyzing different distress types and their probability of occurrence, road authorities can develop targeted maintenance strategies that address specific issues and prolong the...

Pavement Performance Modeling (PPM) is essential to the Pavement Management System (PMS). With the evolution of data analytics, pavement deterioration prediction models become more popular among road engineers and researchers for forecasting pavement conditions based on various factors such as traffic loading, road characteristics, and maintenance...

The Philippines is in the Golden age of Infrastructure development, where roads and bridges are currently being constructed to interconnect the cities and provinces. However, these infrastructures are susceptible to the adverse effects of climate change, as the Philip-pines ranked 8th on the risk index among the countries with the highest exposure...

Khyber Pakhtunkhwa province, Pakistan's third-largest provincial economy, is totally dependent on road transport. To upkeep the highway infrastructure in good condition, an effective, efficient, economical, and sustainable management technique needs to be devised. Pavement deterioration prediction is a vital element for an efficient pavement manage...

One important aspect of network-level highway management is the rational distribution of the maintenance budget to the necessary assets. However, the decision making underlying budget allocation is often unclear, making it difficult to determine whether the budget is being allocated effectively. Based on the PDCA (plan–do–check–action) approach to...

Road accidents remain a serious issue in Lao PDR. Every year around 1000 road users lose their lives. This can be attributed to the lack of a driving license and unawareness of road safety especially among young adult drivers aged between 20-29 years old. This research aimed to investigate the effective method for advertising road safety awareness...

The aim of this work was to study the effects of the variation in the inoculum to waste ratio on the anaerobic treatment of slaughterhouse waste and to utilize the results for the development of a low cost anaerobic treatment system. The work was carried out using a laboratory scale anaerobic digester consisting of two reactors with packing in the...

The pavements are complex structures and they behave in a complex way to various environmental variables and traffic loading conditions. The predictions of the future pavement conditions are a matter of great concern to road engineers. This knowledge of the future condition of the pavement is necessary for budget optimization. An effective maintena...

The study of increasing life service of concrete structures is an important subject for sustainability issues widely addressed by the international community facing the environmental crisis. So, to decrease the early deterioration of structures, it is mandatory to have an assertive structure maintenance plan. This paper explores the outputs of appl...

It is essential to study the factors that lead to the deterioration of bituminous pavement in order to prepare an effective maintenance plan. In developing countries, like Pakistan, a huge amount of budget is spent every year on the rehabilitation of road network due to the absence of an effective maintenance plan. The amount can be reduced by form...