ABSTRACT This paper represents the results of a comprehensive experimental work on developing high performance concrete mixes containing different percentages of electric arc furnace steel slag (EAFSS) coarse aggregate (0, 25, 50, 75, and 100% by weight) for sustainable pavements. The use of steel slag powder (SSP) and silica fume (SF) as a mineral filler was also investigated. Mechanical properties

ABSTRACT Gravel roads management systems (GRMS) are in need of an integrated and cost-effective approach for condition data collection. In order to fulfil this need, this paper validates the practicality of utilising deep learning and image classifiers in collecting corrugation data from gravel roads. The used image classifier in this study was developed using the TensorFlow framework. This classifier

ABSTRACT The pore-water pressure generated by intermittent dynamic vehicle loading under various saturation states is recognized as a critical factor influencing the behaviour of permeable pavement structures, especially the behaviour of UGB layer. However, the underlying mechanisms of hydro-mechanical interaction in the UGB layer and the influence on the pavement structure are still unclear. This

ABSTRACT Silty soil as a rich reserved subgrade fills in seasonally frozen regions of northern China, experienced at least one freeze-thaw (F-T) cycle each year. Many damages will occur after F-T cycles. In general, using cement to stabilise can alleviate that situation. Hence, a series of unconsolidated and undrained triaxial compression tests were conducted to evaluate the static properties (i.e

ABSTRACT Lime-cement stabilisation of clayey soils has been successfully used for many years. However, limited published studies have investigated the influence of varying mellowing period for two-stage lime-cement stabilisation on the secant elastic and resilient moduli of subgrade soils. The two-stage stabilisation starts with mixing the soil with lime, allow it to mellow for a specific period to

ABSTRACT Airport runway roughness can be characterised by power spectral density (PSD) and two spectrum parameters, namely, the unevenness index and waviness. In order to find suitable spectrum parameters for airport runway roughness, seven runway profiles in China were measured to expand the current database of runway profiles. The statistical distributions of the spectrum parameters for runway roughness

ABSTRACT This study aims to use traditional regression model and machine learning method to analyse the impact of traffic loading on pavement performance. Pavement condition data were obtained from pavement management systems (PMS) and axle loads of truck traffic were collected at weigh-in-motion (WIM) stations. Support vector regression (SVR) method was selected for modelling pavement performance

ABSTRACT Weigh-in-Motion (WIM) systems are used in order to reduce the number of overloaded vehicles. Data collected from WIM provide characteristics of vehicle axle loads that are crucial for pavement design as well as for the development of pavement distress prediction models. The inaccuracy of WIM data lead to erroneous estimation of traffic loads and in consequence inaccurate prediction of pavement

ABSTRACT Using polymer modification and warm mix modification together can result in modified binders having superlative performance along with normal mixing and compaction temperature. Over the decades, different experimental methods have been used to study rutting and fatigue performances of asphalt binders and mixes. Currently, advanced performance evaluation tests like multiple stress creep and

ABSTRACT Studies to understand the behaviour and structural integrity of square-shaped short slabs have gained enormous interest in the highway pavement community. Unfortunately, the quantification of curling deformations and subsequent performance studies are very limited. This study examines the curling behaviour of cast-in-situ short paneled concrete pavements (CiSPCP) on a lean concrete base (LCB)

ABSTRACT In this study, the usability and performance properties of recycled concrete aggregates (RCA) as granular road base (GRB) and granular road subbase (GRSB) material were investigated. A natural aggregate and the RCAs obtained from concretes with three different compressive strength and mixtures created by adding the RCAs to NA at the ratios of 25, 50 and 75% were used. Physical properties,

ABSTRACT Large amounts of waste white cement bypass dust (WCBPD) are generated in huge heaps near white cement factories in Jordan, posing growing environmental concerns related to potential hazardous impact and additional disposal cost. This research evaluates possible and suitable recycling of WCBPD as a partial replacement of Portland cement in the production of the rapidly expanding roller compacted

ABSTRACT This study aims to evaluate the field performance of the piezoelectric-based energy harvesting pavement system (PZ-EHPS) under moving traffic loads by multi-physics modelling. Finite element models (FEMs) with multiple physical interfaces were built with the close circuit system. The laboratory scale of FEM was analysed to validate the voltage output as compared to the measurements in laboratory

ABSTRACT This paper proposes an ensemble learning model that deploys a Gradient Boosting Decision Tree (GBDT) to predict two relevant functional indices, the International roughness index (IRI) and the rut depth (RD), considering multiple influence factors. To train and validate the proposed models, more than 1600 different records were extracted from Long-Term Pavement Performance database. The most

ABSTRACT This study was undertaken to develop a new index, the Main Landing Gear Cumulative Stroke (MLGCS) index, to evaluate airport runway roughness. Using ADAMS/Aircraft software, we first developed and validated a virtual prototype model of the Boeing B737-800 aircraft and then employed the model to predict the aircraft’s dynamic responses with regard to roughness. Using this prototype model and

ABSTRACT This article investigates the potential usage of eggshell powder as a bio-modifier for asphalt binder and mixture with the consideration of workability and mechanical properties. The effects of varying dosages (3%, 6%, 9%, and 12%) of eggshell powder on workability, rutting, and moisture damage of asphalt binder and mixture were investigated. Viscosity, multiple stress creep recovery, and

ABSTRACT In practice, the production temperatures of Warm Mix Asphalt (WMA) mixtures are determined based on practical experiences and recommendations. Thus, the focus of this study is to propose a temperature-sensitive compactabilty assessment method to quantify the temperature needs of WMA mixtures. Therefore, in this study, an image-based testing setup coupled with the Marshall Apparatus was developed

ABSTRACT The master curves of complex shear modulus |G∗(ω)| and phase angle δ(ω) of asphalt binder provide its important rheological information. Although many studies have been performed to develop prediction models of |G∗(ω)|, the determination methods often focus on fitting them with experimental data of the modulus. The intrinsic relationships between |G∗(ω)|, δ(ω), relaxation spectrum H(τ) and

ABSTRACT Prediction of solvent diffusion and evaporation rate in the initial days after construction of a sprayed seal is of special concern for pavement performance assessment. It is still a major challenge as solvent evaporation is a very complicated process. In this study, laboratory tests were conducted on bitumen-solvent binder films, under different experimental conditions and varying solvent

ABSTRACT Adherence between tire and pavement surface is essential to safe landing and take-off operations. The accumulation of rubber, originated from aircraft tires, impairs adherence by filling the macrotexture and decreasing the friction coefficient of the surface. Thus, it is necessary to carry out rubber removal procedures on the surface to re-establish adherence conditions. This paper features

ABSTRACT In the recent times, the use of geosynthetic-reinforced soil (GRS) technology has become popular for constructing safe and sustainable pavement structures. The strength of the subgrade soil is routinely assessed in terms of its California bearing ratio (CBR). However, in the past, no effort was made to develop a method for evaluating the CBR of the reinforced subgrade soil. The main aim of

ABSTRACT Multiwalled carbon nanotubes obtained via the Catalytic Chemical Vapor Deposition method were covalently functionalised by maleic anhydride – α-octene copolymer via ‘grafting from’ approach using a sonochemical method to obtain the additive for improving the mechanical properties of cement mortar. The catalyst and oxidising agent used for nanotube synthesis and surface activation through the

ABSTRACT In this study, a new combined framework based on the methods of Multiple-criteria decision-making and mathematical planning was provided in order to select the Road Sections (RS) to carry out Maintenance and Repair Operation (MRO) in order to maximise the reliability of using roads. At first, using Multiple-criteria decision-making of the Best-Worst Method (BWM) and Grey Relational Analysis

ABSTRACT Using modified bitumen has been one of the few reliable methods adopted for improving asphalt performance against moisture sensitivity. This research offers an approach in which both mechanical methods and micro-mechanism investigations have been employed to study the effect of bitumen modified with epoxy resin on the moisture sensitivity of asphalt mixtures. Six bitumen samples: base bitumen

(2021). Correction. International Journal of Pavement Engineering: Vol. 22, No. 5, pp. I-I.

ABSTRACT To reveal the fracture damage of asphalt mixture, an image-based numerical approach is proposed in this study considering the distribution of aggregate and asphalt mortar. Both digital image processing technique and discrete element method are applied to simulate the inhomogeneity of specimen and its fracture evolution at low temperature. At the same time, the acoustic emission (AE) activities

ABSTRACT In developing countries, it is necessary to have appropriate transport infrastructure and industrial facilities that support the fluctuating loads from increased use over time. The in situ concrete block pavements (ISCBP) arise as a cost-effective alternative to the traditional solutions. Few studies that analyse the structural behaviour of ISCBP mention that it works like a flexible pavement

ABSTRACT A new crack detection approach based on local binary patterns (LBP) with support vector machine (SVM) was proposed in this paper. The propsed algorithm can extract the LBP feature from each frame of the video taken from the road. Then, the dimension of the LBP feature spaces can be reduced by Principal Component Analysis(PCA). The simplified samples are trained to be decided the type of crack

ABSTRACT The dynamic response of a multilayer finite plate resting on a two-parameter viscoelastic foundation to moving variable loads is obtained analytically/numerically. The governing differential equation of a multi-layer finite plate resting on a two-parameter viscoelastic foundation is derived firstly. Then, the dynamic response is derived analytically using mode superposition and Duhamel’s formula

ABSTRACT In this study, the mix design volumetrics and cracking potential of foamed Warm Mix Asphalt (WMA) containing various amounts of Reclaimed Asphalt Pavement (RAP) were evaluated. It was found that the increased coating ability of the foamed WMA binder counteracted the lowering of mixing and compaction temperatures for WMA. Therefore, both control HMA and foamed WMA exhibited similar mix design

ABSTRACT Fibre is one of the most popular additives in hot mix asphalt (HMA). However, there are few research studies about the application of fibres in cold recycled mixture with asphalt emulsion. In this study, five popular fibres are introduced to the emulsion recycled mixture, including polyester fibre, polypropylene (PP) fibre, polyacrylonitrile (PAN) fibre, lignin fibre, and basalt fibre. The

ABSTRACT The adoption of mechanistic-empirical approach to pavement design requires the use of resilient modulus of subgrade soils as a crucial input. The determination of in the laboratory is inexpedient due to the nature of the existing test protocols. This prompted the use of estimated values, which inadvertently has gained popularity lately. However, the accuracy of estimated values is questionable

ABSTRACT This study presents a novel hybrid intelligent approach using Extreme Learning Machine (ELM) and Equilibrium Optimiser (EO) (ELM-EO) for predicting resilient modulus, Mr of Unbound Granular Materials (UGMs). Fourteen various blends of Recycled Concrete Aggregate (RCA) with Recycled Clay Masonry (RCM), and Electric Arc Furnace Steel (EAFS) slag with limestone aggregates were tested in the laboratory

ABSTRACT Highway authorities make efforts to relate visual ratings with directly measured pavement condition data to reduce or remove the necessity of manual pavement condition surveys that involve subjectivity and potential safety risk of assessors. This research develops a set of relationships between pavement surface condition rating and objective pavement condition parameters to assist road asset

ABSTRACT A proper interface bond between adjacent asphalt concrete layers ensures the layers to act monolithically to withstand traffic and thermal loading. The presence of a weak interface results in delamination, slippage and fatigue cracks thereby affects the pavement performance; hence, requires careful evaluation. The objectives of this investigation are three-fold. The first objective is to develop

ABSTRACT The sound absorption coefficient was evaluated for the acoustic performance of the pavement in many studies, which is an evaluation index generated by the non-contact interaction between the tyre and pavement. The impedance tube is not enough to simulate the noise of tyre/pavement interaction. This paper presents the findings of a lab and field evaluation of noise characteristics of porous

ABSTRACT Strength and fracture-based tests have been developed to assess the cracking potential of asphalt concrete (AC). The major difference between them is the presence of a notch in fracture tests. The objective of this study was to investigate the correlations between AC strengths and energy-based indices obtained from these tests, theoretically and experimentally. Theoretically, the role of a

ABSTRACT Pavement temperature is one of the most important factors influencing the performance of flexible pavements. The major components of the Earth's heat balance system are downwelling shortwave radiation (D-SWR) from the sun, downwelling longwave radiation (D-LWR) from the atmosphere, and upwelling longwave radiation (U-LWR) emitted by the warm pavement surface. The Pavement ME Design (PMED)

ABSTRACT The wood ash, generated at a large scale globally, is often landfilled or open dump, which creates a land shortage and environmental issues. Incorporating wood by-products in asphalt materials helped improve the performance and mitigate the stated problems, but little work was conducted to evaluate the effectiveness of incorporating wood ashes at the Nanoscale. Therefore, the aim is to study

ABSTRACT The road layer modulus backcalculation based on the road deflection basin obtained by the Falling Weight Deflectometer is a key issue in road engineering. Traditional Falling Weight Deflectometer backcalculation method based on Artificial Neural Network has the disadvantages of poor generalisation ability and low convergence accuracy in terms of the dynamic modulus. In this paper, a hybrid

ABSTRACT One of the key objectives of a pavement management system (PMS) is to find the optimal maintenance strategy, which minimises the sum of a road agency and user costs by maximising the net benefit to society. The PMS helps road agencies to better apply a selection of the right pavement treatments. The objective of the present paper is to show how the HDM-4 (Highway Development and Management

ABSTRACT Cracking is a common fault in asphalt and concrete pavements, which causes water damage and further defects if not repaired in timely fashion. Conventional pavement crack sealing methods based on machines and manual operations are generally subjective, labour-intensive, risky, and inefficient. A laboratory prototype of an automatic pavement crack sealing platform is proposed in this paper

ABSTRACT The design of rigid pavements in Austria is currently based on a catalogue of standard structures, which can be chosen depending on traffic-related parameters. This approach does not allow the consideration of real material characteristics, detailed traffic load information, local climate conditions, and other boundary conditions. To overcome these limitations, a new mechanistic-empirical

ABSTRACT The objective of this study was to assess the impact of aging on high polymer (HP)-modified asphalt binders when compared with conventional polymer-modified asphalt (PMA) binders on the basis of rheology- and chemistry-based parameters. An extended asphalt binder aging experiment that considered multiple combinations of PMA and HP binders from different sources was conducted. Long-term oven-aged

ABSTRACT Friction is a property of the pavement that provides vehicles with grip to change speed and direction. When the available friction is reduced through the polishing action of traffic, the risk of crash increases. This is especially true when the pavement surface is wet. To reduce the risk of skid-related crashes, pavement friction management programmes may establish thresholds, for example

ABSTRACT This study aims to investigate the effects of transverse cracking on the deflections of asphalt pavements. 3D finite element models were developed to simulate various intact and cracked asphalt pavements. The deflections of intact and cracked pavements under falling weight deflectometer (FWD) loading were computed and compared. In most cases analyzed, the deflections of cracked pavements are

ABSTRACT Accurate determination of the resilient modulus (MR) of subbase materials and subgrade soil is a major concern and an essential criterion in the design process of the flexible pavement. The experimental determination of MR involves a challenging process that requires ordinarily very difficult test procedures and extreme cautions and labour. For this reason, soft computing approaches and numerical

ABSTRACT To analyse the feasibility of the low-grade highway as a launch site in military applications and improve the pavement crushing technology in civilian applications, this study investigates the evolution characteristics of a low-grade highway under impact load, including deflection, crack, and energy, via the continuum–discontinuum element method (CDEM). To this end, this paper proposes an

ABSTRACT A road's performance is influenced by several factors. Owing to the limited availability of structural data, road agencies are forced to use rutting and fatigue cracking data as a substitute for structural bearing capacity to identify rehabilitation treatment options. However, this approach fails to assist in the development of investment strategies to reduce the life-cycle cost of the road

ABSTRACT For roadway rehabilitation, in-situ pavement recycling with cement stabilisation is considered as an economical and sustainable solution. However, it cannot be sustainable due to substantial consumption of ordinary Portland cement as the primary stabiliser. The production of cement releases a large amount of CO2 into the environment. Recently, an alkali-activated material (AAM) has been promoted

ABSTRACT Porous asphalt (PA) pavements are widely employed in areas with wet climates. As particle enhancement inclusions in asphalt mastic, mineral fillers play essential roles in improving the performance of PA pavements. This study developed a coupled multiscale finite element (FE) model, involving the mesostructure of PA mixture and PA pavement. Four types of mastic properties were employed with

ABSTRACT Civil engineers face significant challenges in the safe design and construction of durable road infrastructure in the presence of expansive soils. These problematic soils exacerbate undesirable serviceability concerns induced by pavement distress. Soil stabilisation has been recognised as a sustainable approach to alleviate the problematic nature of expansive subgrades. Road pavements constructed

ABSTRACT Metropolitan regions where ground surfaces are covered by an impermeable layer are vulnerable to heavy rainfall. Pervious pavement that facilitates infiltration of stormwater runoff into underground reservoirs mitigates the risk of flooding. However, pervious pavement systems are prone to clogging, which reduces its permeability. Three types of pervious block pavers were field tested in order

ABSTRACT The present paper presents the rutting evaluation of different asphalt mixtures in use in the state of Rio Grande do Sul, Brazil’s southernmost-region, through the uniaxial repeated load test and the monitoring of mixtures performance in field, culminating in a criteria proposal for the parameter Flow Number depending on traffic. For this, five distinct asphalt binders were studied, five grain

ABSTRACT The pavement friction has been recognised as a critical contributor to traffic safety and an important pavement functional characteristic. The sideway force coefficient routine investigation machine (SCRIM) has been used in many studies for pavement friction evaluation. However, this device is costly to purchase and run which limits its accessibility to many transportation agencies. This study

ABSTRACT Polymers are used worldwide for their unique properties such as a light weight or chemical resistance, but which have led to an environmental challenge because of the time they need to completely decompose when buried in landfills. Complementarily, bitumen generates the second biggest environmental impact in the construction of a road. This paper analyses the mechanical, environmental and

ABSTRACT This study focuses on determining the performance of carbon fibre-reinforced pervious concrete (CFRPC) mixes subjected to static, cyclic and impact loadings. Two single-sized coarse aggregates, namely, 12.5 and 20 mm were used with aggregate to cement ratio and water to cement ratio of 3.54 and 0.35, respectively. The volume fraction of carbon fibre (CF) was varied from 0 to 0.4% at 0.1% intervals

ABSTRACT Smartphones have integrated various sensors (e.g. GPS, acceleration sensor) and can be used to evaluate roads roughness. In this study the theoretical algorithm, in which the vehicle suspension parameters were included, would be established to calculate International Roughness Index (IRI) from acceleration using smartphones. Firstly, based on Android Studio 2.0, a client application installed

ABSTRACT Commercial decontamination procedures of oil contaminated sands can be costly. In this study, the inexpensive laterite soil was used as the stabilization additive, which brought notable results in geotechnical strengths, permeability, penetrability by a standard plunger, and surface morphology. To simulate contamination, clean sands were blended with motor oil where loses in geotechnical strength

ABSTRACT An epoxy resin/powder curing agent crack-repair material (EPCRM) was developed to overcome the limitations of the existing materials used to seal asphalt pavement cracks. The EPCRM was prepared by mixing a powder curing agent with a base solution containing an epoxy resin. The viscosity, tensile properties, compression properties, water stability, interfacial bonding properties, low-temperature