Nur Izzi Md Yusoff

National University of Malaysia | ukm · Department of Civil Engineering

Conventional methods for assessing the Marshall characteristics of asphalt pavements are labour-intensive, expensive, and time-consuming because they require manual handling of materials, tools, and costly laboratory procedures. Therefore, this study employed a sophisticated machine learning methodology that integrated AdaBoost, Random Forest and X...

The maintenance and rehabilitation of flexible pavements are crucial for achieving optimal performance and ensuring higher quality, enabling transportation planners to promptly formulate economically viable and sustainable pavement maintenance and rehabilitation strategies. Employing the fuzzy logic technique constitutes a productive methodology fo...

Managing pavement assets poses a challenge for many highways worldwide, primarily attributed to funding restrictions and the absence of organized arrangement tools for maintenance and rehabilitation (M&R) activities to preserve road pavement assets. While pavement management systems (PMS) aid in predictions, the decision of when and how to administ...

Road degradation is a common problem in Malaysia which caused by weather changes, expanding loads as well as the effects of ageing, moisture and temperature results in high maintenance expenses on conventional bitumen pavement. Therefore, it has been recommended on the modification of bitumen as a substitute technique to address this issue and exte...

Road traffic collisions (RTCs) represent a significant public health challenge, particularly in countries with elevated mortality rates from such incidents. In Libya, the scarcity of digitized RTC data hampers robust analysis and subsequent intervention strategies. This study aims to bridge this gap by meticulously transforming over 2,300 hardcopy...

Researchers across the globe have explored several alternatives to recycling natural rubber and have identified several challenges. Therefore, this study evaluates the feasibility of recycling waste latex rubber gloves (WLRG) as a bitumen modifier to enhance the bitumen’s physical, thermal, and morphological characteristics. The study adds varying...

The crumb rubber (CR) recycled from waste tyres could be a viable alternative in achieving green pavements that offer exciting new markets to global investors. Adding CR into flexible pavements enhances their performance and ensures environmental sustainability. This paper will discuss the production variables, CR sizes and contents, blending techn...

This investigation is centered around the application of warm mix asphalt (WMA) technologies to address workability concerns linked to rubberized asphalt binders. The primary aim of incorporating crumb rubber (CR) and WMA additives is to establish a robust paving method that fosters energy conservation, efficient waste management, noise reduction,...

Pavement management systems (PMS) are used by transportation government agencies to promote sustainable development and to keep road pavement conditions above the minimum performance levels at a reasonable cost. To accomplish this objective, the pavement condition is monitored to predict deterioration and determine the need for maintenance or rehab...

The rapid economic and industrial growth experienced in the Asian region has significantly increased waste production, particularly single-use plastic. This surge in waste poses a significant challenge for these countries' municipal solid waste management systems. Consequently, there is a pressing need for progressive and effective solutions to add...

This study involves the preparation of cement grout samples by varying proportions of superplasticizer (SP) and water-cement (w/c) ratio (0.25–0.45) which were tested for computing flow value and 1-day, 7-day, and 28-day compressive strength. With 75 data points a neural network model was developed to predict the 28-day compressive strength based...

There has been an increase in plastic production during the past decades, yet the recycling of plastic remains relatively low. Incorporating plastic in concrete can mitigate environmental pollution. The use of waste polyethylene terephthalate (PET) bottles as an aggregate weakens properties of concrete. An alternative is to use PET bottles as a bin...

This study uses the artificial neural network and response surface methodology to develop two models for predicting the rheological properties, complex modulus (G*) and phase angle (δ) of bitumen-filler mastic. It also analyses and evaluates the accuracy of both models by determining the coefficient of determination (R 2), mean squared error (MSE),...

Hydrophobic aggregates have the great ability to prevent asphalt pavement roads from stripping-off of the asphalt in presence of water. In addition, they give the option to consume less asphalt and save cost. On the other hand, natural aggregates have been found to be non-renewable and rare. Geopolymer based artificial aggregates are great material...

This study investigates the effects of waste latex rubber gloves (WLRG) on bitumen's physical and thermal characteristics. The study modifies 60/70 penetration grade bitumen with varying percentages of 3%, 5%, 7%, and 9% of WLRG in high shear mixer at 150°C to determine the appropriate WLRG percentage for achieving the required specifications based...

This paper presents the results of an investigation to evaluate the effect of Palm Oil Boiler Ash (POBA) and a chemical warm mix additive, Rediset on the physicochemical and thermal properties of bituminous binders. Modified binder preparation was carried out by varying the composition of POBA (0, 3, 5, 7, and 9%) and Rediset with 2% by total weigh...

The aim of this research is to evaluate the effects of ageing on 60/70 penetration grade bitumen modified with polyurethane (PU). Effects of ageing were evaluated by performing consistency test through ageing index and morphology evaluation. The results of these tests showed that adding 3 wt% of PU stiffened the bitumen in comparison to base bitume...

The disposal of oily sludge (OS) and depletion of crude oil reservoirs has become a global problem for the petroleum industries. The rising cost of bituminous materials is also attributed to the depletion of crude oil reservoirs. Incorporating OS in the production of bitumen can reduce waste generation, thereby ensuring sustainability in petroleum...

This study focused on identifying the most appropriate structural system for multi-story buildings and analyzing its response to lateral loads. The study analyzed and compared the different structural systems to determine the most suitable option. The study aims to utilize three lateral framing systems (moment, braced, and diagrid) in order to inve...

The effects of modifying a 60/70 penetration grade bitumen with 3 wt% polyurethane (PU) and a Warm Mix Asphalt (WMA) additive, namely Rediset, were explored in this research. Penetration, softening point, viscosity, and ductility tests were employed for consistency testing, while the differential scanning calorimetry was used for thermal characteri...

The filler-bitumen interaction mechanism is one of the most essential phases for comprehending the asphalt mixture’s performance. However, despite numerous studies, in-depth knowledge of filler-bitumen reciprocity at a microscale level is yet to be ascertained. The goal of this research is to gain a better understanding of the filler-bitumen micr...

It is challenging to predict the mechanical properties of modified asphalt binders because of their complex non-linear viscoelastic behavior. This study evaluates and compares the feasibility of using the response surface methodology (RSM) and machine learning (ML) methods to predict the shear strain, accumulated shear strain, non-recoverable creep...

The critical position of concrete plays a decisive role in engineering applications where extreme high-temperature environments severely affect the durability and life cycle of concrete structures. Experiments were conducted to mimic fire and extreme high-temperature environments, using different activities of nano calcium carbonate (NC) and nano s...

Semi-flexible pavement surfacing, or grouted macadam, is an alternative to conventional flexible and rigid pavement. It is constructed by injecting cementitious grout into the voids of an open-graded asphalt surfacing. The cement used in cementitious grouts has adverse environmental effects because of the carbon dioxide emission in cement productio...

Geotechnical engineering design necessitates a study of soil parameters for calculation purposes. As a complement to the conventional method, a resistivity survey can give preliminary results in a short amount of time. This study uses a statistical analysis program to show a correlation and regression for predicting soil parameters based on the res...

The evaluation of fundamental mechanical properties of bitumen is vital to construct long-term performing pavements. This research evaluates cohesive bond strength of bitumen and mastics using compression pull-off test (CPOT). The results show problems in the common interpretation of load-displacement curves. A discussion is made on fibrillary nucl...

Te utilization of construction and demolition waste is useful for sustainable infrastructure development and protecting the environment. In this research, the properties of self-compacting concrete produced by replacing the natural coarse aggregates (NCA) with inferior recycled coarse aggregates (RCA) were investigated. Te properties of self-compac...

The effect of aluminum oxide nanoparticles (Al2O3) on the 60/70 penetration of asphalt cement (AC) was investigated in terms of the physical and rheological characteristics by using the Superpave testing procedures. Al2O3 at 3, 5, and 7% concentrations were blended with 60/70 penetration of grade AC. Conventional testing procedures were adopted reg...

Carbon footprint reduction, recompense depletion of natural resources, as well as waste recycling are nowadays focused research directions to achieve sustainability without compromising the concrete strength parameters. Therefore, the purpose of the present study is to utilize different dosages of marble waste aggregates (MWA) and stone dust (SD) a...

The environmental concerns of global warming and energy consumption are among the most severe issues and challenges facing human beings worldwide. Due to the relatively higher predicted temperatures (150-180 °C), the latest research on pavement energy consumption and carbon dioxide (CO2) emission assessment mentioned contributing to higher environm...

Modifiers such as fibers, fillers, natural and synthetic polymer extenders, oxidants and anti-oxidants, and anti-stripping agents are added to produce modified asphalt. However, polymers are the most widely utilized modifiers to enhance the function of asphalt mixtures. The objective of this research was to evaluate the mechanical properties and du...

Fire and extreme heat environmental changes can have an impact on concrete performance and as climate change increases, new concrete structures are being developed. Nano-silica and nano-calcium carbonate have shown excellent performance in modifying concrete due to their large specific surface area. This review describes the changes in concrete mod...

This article provides a comparative knowledge of predicted and measured settlements of road embankments with prefabricated vertical drains (PVDs). The emphasis of this study was to investigate and back-analyse the ratio of horizontal permeability in an undisturbed area to a smeared zone, which affects the behaviour of vertical drains. Two models of...

The hybrid type of pavement called semi-flexible or grouted macadam has gained popularity over the last few decades in various countries, as it provides significant advantages over both rigid and conventional flexible pavements. The semi-flexible pavement surface consists of an open-graded asphalt mixture with high percentage voids into which flowa...

Asphalt binder, as one of pavement component is exposed to heat and rainfall. Polymer modified asphalt binder is a good alternative to withstand the weather in tropical countries. By utilizing warm mix asphalt additive, the high compacting and mixing temperature can be reduced. However, the impact to the environment and its characteristic towards h...

The Sultanate of Oman has experienced rapid development over the last thirty years and has constructed environmentally friendly and sustainable infrastructure while it continues to find economical alternative resources to achieve the goals of the Oman 2040 vision. The primary concerns are preserving natural resources and reducing the impact of carb...

Rheology can be defined as the primary measurement associated with bitumen flow and deformation characteristics. In the long term, DSR testing consumes a long time, expensive cost and skilled labour to operate equipment or machines in the laboratory. The complex modulus, G* and phase angle, δ, are essential parameters for characterising and predict...

Optimal use of steel slag and Cathode Tube Rays (CRT) as alternative materials in the construction of roads can help reduce the demand for natural aggregates. The purpose of this study is to determine the potential of aggregate mixtures consisting of steel slag as coarse aggregate and CRT glass as fine aggregate. These two materials were used as a...

The daily utilization of a large amount of raw materials is causing a rapid depletion of natural resources. The growth of the human population is accompanied by higher activities in the agricultural and manufacturing sectors that resulted in a larger volume of waste materials being disposed of in landfills each year. Researchers are seeking ways to...

Road pavement is a structure that expose to various climate conditions. To make it more durable, modification of asphalt binder with polymer is a popular option. However, to maintain the environmental sustainability, the mixing and compaction temperature needs to be reduced. Warm Mix Asphalt additive had been widely used for this purpose. In this r...

Pavement assessment is significant in the maintenance and rehabilitation process. Spectral Analysis of Surface Waves (SASW) is one of the seismic testing where it is a non-destructive, inexpensive, convenient, and quick method to assess soil and rock mass characteristics as an alternative to the conventional method. Coring, which requires the drill...

Use of by-product materials, such as steel slag and cathode ray tube glass, as alternative recycled materials in the construction of roads, could reduce the demand for natural aggregates. Measurements of the physical properties (specific gravity, water absorption, Los Angeles abrasion value and soundness) and microstructure characteristics were mad...

There is currently an increasing demand for Building Information Modelling (BIM) to be integrated into green projects. BIM is able to evaluate green building assessment tools by digitising and assessing buildings during their development stage. In Malaysia, the Green Building Index (GBI) promotes sustainability in the built environment. Six categor...

Airports play a critical role in transporting goods and passengers and supporting the growth of the world economy. Airports spend huge sums annually to maintain and improve pavement functions by expanding the runways, taxiways, and aprons, and perform routine maintenance and rehabilitation of the existing pavements. Besides the traditional direct c...

This study examines the physical properties of a 60/70 penetration grade bitumen modified using warm mix asphalt (WMA) additive, Rediset and palm oil boiler ash (POBA) as a modifier. Modified binders were prepared by adding 2% of Rediset with different POBA contents (3, 5, 7, and 9%) through wet mixing process. Physical properties of modified bitum...

The growth of the palm oil industry has resulted in an increase in the production of solid waste, created from the extraction of fresh fruit bunches, which can take the form of palm oil boiler ash (POBA). POBA can be used to modify asphalt binder and asphalt mixtures to reduce the harmful effect of this waste on the environment. The objective of ea...

Airport pavements deteriorate with age due to the impacts of environmental factors and air traffic. There is a dearth of studies on the scheduling of airport pavement maintenance and the importance of assessing the different scheduling strategies using Life-Cycle Cost Analysis (LCCA). An analysis of the cost–benefit study of a delay in maintenance...

The construction of asphalt pavement road networks are very costly for the government budget. A flexible pavement maintenance prediction is unavoidable to reduce government expenses and increase the service life span of pavements. This paper aims to predict flexible pavement maintenance in tropical regions using an Adaptive Neuro-Fuzzy Inference Sy...

This study compares the feasibility of using artificial neural networks (ANN) and multi-linear regression (MLR) for predicting an hourly temperature of the pavement, considering the depth, time, and air temperature as independent variables. Accurate prediction of the pavement temperature is critical for road maintenance, pavement design, and near-s...

Roads play a pivotal role in the overall economic growth of any country. Developed countries allocated sufficient budget to make new roads and to maintain the existing roads. They also have a proper pavement management system (PMS) in practice to manage roads, whereas developing countries suffer from budgetary issues to make new roads and maintain...

In this study, the viscoelastic properties of Peat partials used to modify asphalt binders are investigated. The tests were implemented in the current study using a dynamic shear rheometer (DSR). The obtained results from the rheological tests were represented by both complex moduli (G*) and viscosity (δ) under different conditions by Isochronal Pl...

The performance of asphalt pavement is highly influenced by the properties of asphalt binder. Researchers are interested in conducting studies to improve the efficiency of the conventional asphalt binder due to its rheological deficiencies. This study aims to evaluate the performance of antiozonant self-manufactured rubber (ASMR) as modifier. The A...

Machine learning (ML) models are excellent alternative solutions to model complex engineering issues with high reliability and accuracy. This paper presents two extensively explored ensemble models for predicting asphalt pavement temperature, the Markov chain Monte Carlo (MCMC) and random forest (RF). The RF and multiple MCMC (RF-MCMC) were used to...

Elastomers and different Plastomers are most common additives used to improve the performance of binder. However, bitumen modified with these additives is known to be unstable followed by the problem of separation. The separation problem becomes worse, when bitumen is modified with CR, which can undergo a high degree of phase separation during hot...

Pavement failures such as fatigue, rutting, cracking, bleeding, and stripping are typical pavement deterioration. Researchers have been experimenting with pavement modification to overcome these problems. This study determines the optimum binder content (OBC) for modifying an asphalt mixture with a partial replacement of coarse aggregate (5mm-14mm...

This study investigates the effects of ageing simulation on the physical properties of nano-clay modified bitumens (NCMBs). Bitumen with penetration grade 60/70 is modified with 0, 2 and 4% nano-clay, and the consistency of the samples is characterized using the penetration, softening point, and viscosity tests before and after aging. Atomic force...

The present study aims to evaluate the efects of ageing simulation on the physical properties of Nano-Clay Modifed Bitumens (NCMBs). Bitumen with the penetration grade of 60/70 is modifed with 0, 2, and 4% nano-clay, and the consistency of the samples is characterized using the penetration, softening point, and viscosity tests before and after agin...

This study investigates the feasibility and effect of poly(lactic) acid (PLA) on bitumen modification. The chemical and physical properties were evaluated for the modified bitumen produced with varying percentages of PLA ranging from 3 to 9%. Several testings such as the nuclear magnetic resonance (NMR), Fourier Transform Infrared Spectroscopy (FTI...

Pervious concrete is an effective and unique way to overcome critical environmental issues and support green, sustainable growth. Pervious concrete refers to a non-slip porous pavement concrete, which is permeable to water. Recently, the demand for sustainable waste palm oil products for construction in Malaysia has dramatically increased. For long...

Waste palm oil products can be recycled in the production of pervious geopolymer concrete (PGC) for long-term sustainable development. PGC is a non-slip porous pavement concrete that allows water to pass through. Biomass aggregate (BA) is produced by burning palm oil biomass and is introduced as a replacement for natural aggregate (NA). BA is mixed...

For its renewability, environmentally friendly and cost-effective advantages, bio-oil is employed to partially substitute the petroleum-based asphalt. However, its usage weakens the high-temperature performance of petroleum asphalt. Therefore, hydrophobic nanosilica (NS) particles were employed as a physical modifier of crude palm oil (CPO) to impr...

This study was conducted to investigate the effect of ageing on bitumen, before and after modification. Nano-clay modified bitumen (NCMB) was produced by adding nano-clay (NC) to 60/70 penetration grade bitumen; then, the binder was tested using conventional tests for properties such as penetration, softening point and viscosity. These tests were c...