Article
Green & Sustainable Science & Technology
William Fedrigo, Lucas Fraporti Heller, Lelio Antonio Teixeira Brito, Washington Peres Nunez
Summary: This study fills the research gap on the fatigue behavior of cold recycled cement-treated mixtures (CRCTMs) by conducting long-term curing fatigue tests and comparing the results with three different design methods. The experiment and modeling showed that CRCTMs with higher reclaimed asphalt pavement (RAP) contents exhibit superior fatigue behavior, while those with lower RAP contents experience abrupt stiffness loss, requiring thicker structures. The study also found that the MeDiNa method is more conservative and highlights the importance of calibration based on long-term pavement performance data.
Article
Construction & Building Technology
Kenneth A. Tutu, David H. Timm
Summary: This study evaluated the effectiveness of two methods, NCHRP 9-38 and NCHRP 9-44A, in estimating the fatigue endurance limit (FEL) of asphalt. The impact of these methods on asphalt thickness was also investigated. The results showed that the NCHRP 9-38 method yielded greater FEL values. Additionally, the NCHRP 9-44A model produced similar results for different types of mixtures when a rest period exceeding 5 seconds was entered.
INTERNATIONAL JOURNAL OF PAVEMENT ENGINEERING
(2022)
Article
Engineering, Civil
Babanpreet Singh Saini, S. P. Singh
Summary: The fatigue strength of self-compacting concrete (SCC) under flexural loads is examined in this study. Flexural fatigue tests were conducted on beam specimens to accumulate fatigue life data, and mathematical equations for predicting fatigue strength were proposed. Blended cements have a significant impact on the fatigue strength of SCC, with the mix containing RCA and MK enhancing the endurance limit.
Article
Construction & Building Technology
Junqing Zhu, Shad Sargand, Issam Khoury, Derar Tarawneh, Tao Ma, Feng Chen
Summary: Experimental roads with different thicknesses of asphalt concrete were constructed to study the effects of vehicle load, temperature, tire pressure, and axle configuration. The results showed that the calculated strain responses were generally in good agreement with the measured values. A strain gage rosette was effective in measuring vertical strain in the pavement. However, there were significant differences between measured and calculated strain responses in the summer test due to the limitations of the finite element program used.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Kenneth A. Tutu, David H. Timm
Summary: This study developed a novel fatigue cracking damage model for asphalt concrete pavements, incorporating changes in AC modulus and fatigue endurance limit. The model aims to reduce empiricism in M-E fatigue modeling by implementing an incremental-recursive damage accumulation approach. Field validation is recommended before using the model in pavement design.
INTERNATIONAL JOURNAL OF PAVEMENT ENGINEERING
(2022)
Article
Construction & Building Technology
William Fedrigo, Washington Peres Nunez, Gabriel Grassioli Schreinert, Thais Raduenz Kleinert, Matheus Ferreira Matuella, Mario Alexander Castaneda Lopez, Jorge Augusto Pereira Ceratti
Summary: This study evaluates the flexural static and cyclic behavior of cement-treated mixtures of reclaimed asphalt pavement (RAP) and lateritic soil (LS). The results show that flexural strength and resilient modulus increase with higher RAP content, while mixtures become more flexible with higher RAP and lower cement amounts. Additionally, the fatigue life of cement-treated recycled base layers increases with RAP percentage and the thicknesses of asphalt wearing course and recycled base layer, with the effect of cement content depending on the layer thickness.
ROAD MATERIALS AND PAVEMENT DESIGN
(2021)
Article
Construction & Building Technology
Songtao Lv, Xinghai Peng, Jiang Yuan, Hongfu Liu, Long Hu, Shuo Yang, Jing Liu
Summary: This study presents a new method to characterize the fatigue performance of cement stabilized macadam uniformly using experiments and mathematical analysis, which effectively solves the problem in engineering design.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Apichat Suddeepong, Apinun Buritatum, Menglim Hoy, Suksun Horpibulsuk, Thaworn Takaikaew, Jitwadee Horpibulsuk, Arul Arulrajah
Summary: Repetitive loads lead to fatigue cracking failure of concrete pavements. This study investigated the enhancement of mechanical strength and flexural fatigue resistance of normal concrete by utilizing natural rubber latex (NRL). The effect of water to cement (w/c) and dry rubber to cement (r/c) ratios on compressive and flexural strengths as well as flexural fatigue behavior was examined. It was found that higher r/c ratios resulted in lower compressive strength but higher flexural strength. Concrete modified by NRL had lower plastic deformation and higher fatigue life compared to normal concrete. The NRL-concrete pavement with optimized r/c ratio had a thinner thickness and reduced operational cost.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2022)
Article
Construction & Building Technology
Babanpreet Singh Saini, Surinder Pal Singh
Summary: Blending silica fume or metakaolin with cement and fly ash can enhance the flexural fatigue lives of self compacting concrete containing recycled concrete aggregates.
STRUCTURAL CONCRETE
(2023)
Article
Construction & Building Technology
Sohrab Zarei, Jian Ouyang, Yanqing Zhao
Summary: Semi-flexible pavements (SFP) have gained attention in pavement engineering due to their excellent resistance to rutting. However, traditional SFP has lower fatigue resistance compared to conventional asphalt mixtures due to its brittleness. To improve fatigue resistance, cement-asphalt emulsion paste (CAEP) is used as a grouting material in SFP, and the influence of asphalt emulsion content on fatigue resistance is studied. By establishing fatigue models and analyzing pavement responses, it is found that SFP with CAEP can have better fatigue resistance than traditional asphalt mixtures, especially when the asphalt emulsion to cement ratio is 0.4.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Jun Zhang, Jinxiao Bai, Shouxin Wang
Summary: This paper investigates the fatigue performance of cement stabilized macadam at different curing stages. The results show that the strength and fatigue life of cement stabilized macadam are highly sensitive to curing time in the early stage of curing. The established model successfully reflects the damage evolution characteristics of different curing stages.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Engineering, Mechanical
Yidong Gan, Hongzhi Zhang, Yu Zhang, Yading Xu, Erik Schlangen, Klaas van Breugel, Branko Savija
Summary: The study investigates the fatigue properties of cement paste at the microscale, revealing a strong size dependence in flexural fatigue life. Despite the presence of a higher density of nano-scale cracks during fatigue loading compared to static fracture, fatigue damage evolution is slow and small even under high stress levels. Residual deformation in cement paste is attributed to the interaction of viscoelastic deformation and fatigue cracking growth.
INTERNATIONAL JOURNAL OF FATIGUE
(2021)
Article
Construction & Building Technology
Audrius Vaitkus, Ovidijus Sernas, Judita Grazulyte
Summary: The research aims to develop high-strength concrete mixture for modular pavements, with steel fibers and silica fume showing the best performance. Concrete mix with 49.5 kg/m(3) of steel fibers and 7% of silica fume had the highest compressive strength of 61 MPa and the highest resistance to fatigue.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Engineering, Mechanical
Xuefei Guan
Summary: This study develops a probabilistic model for the threshold stress intensity factor range in infinite fatigue life design. The model incorporates the concept of probability of propagation to derive the probability density function of the threshold intensity factor range, accounting for uncertainty in fatigue crack growth. By integrating the derived distribution into the Kitagawa-Takahashi diagram, a rational fatigue endurance reliability model is established. The analytical form of fatigue endurance reliability index is obtained through first-order asymptotic approximation. Realistic engineering application examples demonstrate the usefulness of the overall method.
PROBABILISTIC ENGINEERING MECHANICS
(2023)
Article
Chemistry, Physical
X. D. Wang, S. L. Song, D. M. Liu, Z. W. Zhu, H. F. Zhang, X. C. Ren
Summary: Introducing dendrite phase has effectively improved the fatigue limit of metallic glass composite, leading to better fatigue performance. This may provide a promising approach for designing metallic glasses or metallic glass composites with improved fatigue performance.
Review
Construction & Building Technology
Suthakaran Sivagnanasuntharam, Arooran Sounthararajah, Javad Ghorbani, Didier Bodin, Jayantha Kodikara
Summary: This paper investigates the current state of knowledge of compaction testing methods for asphalt and identifies their limitations. Intelligent compaction can ensure uniformity and provide real-time feedback. However, the current specifications are not suitable for asphalt compaction, and GPR technology shows potential for asphalt density estimation.
ROAD MATERIALS AND PAVEMENT DESIGN
(2023)
Article
Construction & Building Technology
Suthakaran Sivagnanasuntharam, Arooran Sounthararajah, Didier Bodin, Jayantha Kodikara
Summary: This paper presents a novel equation, called the 'STKAR equation', for real-time prediction of the average in-depth temperature of asphalt layers during compaction. The equation utilizes the measured surface temperature and estimated temperature gradient at the asphalt surface. The developed equation was validated using temperature data obtained from a construction site and numerical simulations. The results showed the effectiveness and applicability of the STKAR equation.
INTERNATIONAL JOURNAL OF PAVEMENT ENGINEERING
(2023)
Article
Engineering, Geological
Yanjian Lian, Ha H. Bui, Giang D. Nguyen, Shaohan Zhao, Asadul Haque
Summary: The first fully validated smoothed particle hydrodynamics (SPH) model is proposed to tackle coupled flow-deformation problems in unsaturated porous media. The model is capable of predicting anisotropic seepage flows and their transition from unsaturated to saturated states, as well as their influence on the mechanical behavior of the porous media. Experimental results show that the model can accurately predict the behavior of unsaturated seepage-deformation problems in large-scale geotechnical applications.
Article
Engineering, Geological
Arun Kumar Murali, Khoa M. Tran, Asadul Haque, Ha H. Bui
Summary: The design of rock-socket piles relies on the shaft resistance to support the load at the serviceability state. This study investigated the load-bearing mechanisms of rock-socketed piles using a miniaturised pile-load test setup and numerical modelling. X-ray CT imaging and numerical modelling revealed three different interface mechanisms and validated the observed micro-mechanics in the rock asperities. The results indicated that the height of the rock asperities significantly influenced the failure mode, with the bottom leading edge carrying the majority of the shaft loads.
ROCK MECHANICS AND ROCK ENGINEERING
(2022)
Article
Engineering, Mechanical
Dat G. Phan, Giang D. Nguyen, Ha H. Bui, Terry Bennett
Summary: Constant suction triaxial tests reveal the effect of hydro-mechanical coupling on the onset and orientation of localisation bands in partially saturated soils. A model with a single yield surface dependent on stress and suction is used to investigate this effect. The model parameters are determined using experimental bifurcation characteristics, highlighting the sensitivity of conditions that promote bifurcation under the influence of hydro-mechanical coupling and dilation.
INTERNATIONAL JOURNAL OF PLASTICITY
(2023)
Article
Environmental Sciences
Fatima Azhar, Valentijn R. N. Pauwels, Ha H. H. Bui
Summary: This study combines laboratory experiments and numerical modelling to assess vehicle stability, which is crucial for hazard classification criteria and safety guidelines for stream crossings and evacuation route planning during floods. The research demonstrates the application of a numerical method to determine the stability threshold of vehicles, eliminating the need for physical model studies for each type of vehicle.
JOURNAL OF FLOOD RISK MANAGEMENT
(2023)
Article
Multidisciplinary Sciences
Asanka De Silva, Rajitha Ranasinghe, Arooran Sounthararajah, Hamed Haghighi, Jayantha Kodikara
Summary: This study conducted field experiments to capture and measure vehicle-induced road dust using a DSLR camera and a dust monitor. A new vision dataset was created with similar to 7,000 manually annotated images for dust segmentation.
Article
Engineering, Multidisciplinary
Yanjian Lian, Ha H. Bui, Giang D. Nguyen, Asadul Haque
Summary: This study proposes a computationally efficient three-point integration (TPI) scheme that removes the influence of water bulk modulus from the pore-water pressure equation, enabling larger time increments and saving computational costs for field-scale applications. Furthermore, a stabilised method is proposed to enable SPH to solve coupled flow-deformation of saturated porous media involving negative excess pore-water developments for the first time. The results suggest that the proposed SPH algorithm is stable and suitable for handling field-scale applications.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2023)
Article
Construction & Building Technology
Suthakaran Sivagnanasuntharam, Arooran Sounthararajah, Jayantha Kodikara
Summary: The main aim of this paper is to analyze and compare different intelligent compaction measurement values (ICMVs) with spot test measurements for asphalt pavement. A two-layer asphalt testbed was constructed and all ICMVs were calculated using the same accelerometer data. The analysis showed strong correlations between certain ICMVs, but none of them showed acceptable correlation with asphalt densities. A correction method for the influence of underlying support on one of the ICMVs was developed and validated.
INTERNATIONAL JOURNAL OF PAVEMENT ENGINEERING
(2023)
Article
Engineering, Civil
Kritsanaphong Chaikla, Suriyah Thongmunee, Peerapong Jitsangiam, Khachen Chakkaeo
Summary: This study characterized the bearing capacities and deformation behavior of inclined pile foundations subjected to vertical and horizontal loads through laboratory-scaled testing. The optimal inclinations for vertical load were found to be 10 degrees for single pile and 20 degrees for pile group. For horizontal load, the optimal inclinations were between -10 degrees to -20 degrees for single pile and 20 degrees for pile group. The ratios of the ultimate horizontal load to the ultimate vertical load ranged from 0.02 to 0.19 for single pile and 0.15 to 0.23 for pile group.
KSCE JOURNAL OF CIVIL ENGINEERING
(2023)
Article
Construction & Building Technology
Suthakaran Sivagnanasuntharam, Arooran Sounthararajah, Jayantha Kodikara
Summary: This study investigates the correlations between asphalt density, intelligent compaction measurement values (ICMVs), and asphalt moduli under different temperature conditions. The research findings indicate that the influence of asphalt density on its modulus is primarily controlled by the temperature of the asphalt mix. Additionally, ICMVs were found to be insensitive to changes in asphalt density at typical compaction temperatures. A practical approach for maximizing the benefits of intelligent compaction technology in quality control/quality assurance of asphalt pavements is proposed, involving the overlaying of ICMV maps and surface temperature maps to identify vulnerable regions for density testing.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Construction & Building Technology
Peerapong Jitsangiam, Korakod Nusit, Pimpawat Teeratitayangkul, Ghim Ping Ong, Chotchanit Thienchai
Summary: Plastic waste, especially single-use products, is a growing environmental concern that needs to be addressed. This study proposes the use of recycled plastic in hot-mix asphalt concrete as an alternative to landfill disposal. A modified Marshall mix design framework was developed to determine the optimal amount of plastic and asphalt binder for the ACP mix. Laboratory tests showed that ACP outperformed traditional asphalt concrete in terms of performance.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Environmental Sciences
Prinya Chindaprasirt, Chai Jaturapitakkul, Weerachart Tangchirapat, Peerapong Jitsangiam, Kamchai Nuithitikul, Ubolluk Rattanasak
Summary: This study examined the synthesis of CaCO3 from CCR solutions by capturing CO2 with the aid of triethanolamine (TEA) solutions. The results showed that TEA solutions primarily produced cubic calcite, while non-TEA solutions formed small and agglomerated spherical vaterite and cubic calcite particles. The CaCO3-filled epoxy composites exhibited higher compressive strength but reduced transparency. These findings provide guidelines for the application of CCR slurry filtrate and suggest the potential of CO2 gas combined with TEA solution for carbon-neutral manufacturing.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Chemistry, Analytical
Rajitha Ranasinghe, Arooran Sounthararajah, Jayantha Kodikara
Summary: Intelligent compaction (IC) is a technology that uses non-contact sensors to monitor and record the compaction level of geomaterials in real-time during road construction. However, current IC devices have limitations regarding visualization and comparison of multiple measurements, retrofitting to different rollers, incorporating corrections for variable field conditions, integrating construction specifications, and recording key roller parameters. To address these issues, the innovative retrofittable intelligent compaction analyzer (ICA) platform was developed, which effectively calculates and displays various parameters in real-time during compaction.
Article
Construction & Building Technology
Krittaya Varuntanya, Sararat Kwunjai, Theechalit Binaree, Peerapong Jitsangiam, Guoqing Jing, Peyman Aela
Summary: Railway ballast deteriorates over time and replacing it is necessary for track stability, but the shortage of fresh ballast presents challenges in the recycling process. This study proposes a method for characterizing fresh and used ballast using digital images and data analysis software, aiming to establish a threshold for distinguishing between the two. The study analyzes morphology parameters and suggests that specific combinations of shape indices offer insights into differentiating between fresh and used ballast. Further exploration using advanced statistical techniques and machine learning could enhance the accuracy of defining used ballast.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2023)
