Article
Construction & Building Technology
Thwe Thwe Win, Pitcha Jongvivatsakul, Tidarut Jirawattanasomkul, Lapyote Prasittisopin, Suched Likitlersuang
Summary: This study aimed to demonstrate the feasibility of utilizing recycled single-use surgical face mask fibers in cement mortar. The results showed that introducing face mask fibers increased the tensile and flexural strengths of the mortar, with the mixture containing 0.15% fibers performing the best.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Construction & Building Technology
Agnieszka Michalik, Filip Chylinski, Artur Piekarczuk, Waldemar Pichor
Summary: The production of Manufactured Steel Fibres (MSF) significantly contributes to pollution of the natural environment by releasing large amounts of carbon dioxide. Acquiring new solutions for dispersed concrete reinforcement should have environmental, economic, and practical considerations, reinforcing the brittle cement matrix. Comparative studies between concrete with MSF and concrete with the same amount of purified Recycled Tyre Steel Fibres (RTSF) were conducted to evaluate the adhesion of fibres to the cement matrix and their dimensions as the determining factors of effective reinforcement in concrete. The test results indicate that RTSF adheres better to the cement matrix compared to MSF, with fracture and fracture toughness indices at the same level as hooked-end MSF but lower than wave-cut and hooked-end MSF. Microscopic analysis further confirms the excellent adhesion of RTSF to the cement matrix. The application of waste RTSF reinforces concrete structures and promotes sustainable construction development.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Construction & Building Technology
Walid Mansour, Sabry Fayed
Summary: The study compared the mechanical properties of concrete reinforced with recycled plastic and end-hooked steel fibers, finding that 2% volume fraction of fibers exhibited the highest strength. As fiber volume fraction increased, the peak load of RC beams increased but decreased after exceeding 2%.
STEEL AND COMPOSITE STRUCTURES
(2021)
Article
Construction & Building Technology
Peifeng Su, Qingli Dai, Miaomiao Li, Yunxiang Ma, Jiaqing Wang
Summary: In this study, plastic-rubber compound modified mortar (PRM) and recycled steel fiber (RSF)-reinforced plastic-rubber modified mortar (PRSRM) samples were prepared and tested to evaluate their mechanical properties and drying shrinkage. The results showed that the addition of RSF increased the compressive strength of the mortar, while the PR improved its flexural behavior and reduced drying shrinkage length change. This sustainable material design promotes the full recycling of waste tires in cement-based materials.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Jong-Gun Park, Dong-Ju Seo, Gwang-Hee Heo
Summary: In this study, the effects of different fiber combinations on the properties of fiber-reinforced cement mortar were investigated. It was found that the hybrid fiber-reinforced cement mortar containing 0.75% steel fiber and 0.25% carbon fiber exhibited enhanced compressive strength, flexural strength, and impact resistance, showing a synergistic effect of the combined fibers.
APPLIED SCIENCES-BASEL
(2022)
Article
Construction & Building Technology
Afonso R. G. Azevedo, Thuany E. S. Lima, Raphael H. M. Reis, Michelle S. Oliveira, Veronica S. Candido, Sergio N. Monteiro
Summary: This study investigates the addition of guaruman fiber into cement for a reference mortar, finding that the fiber surface treatment process promoted an increase in mass density and water retention of the mortar.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2022)
Article
Chemistry, Analytical
E. G. Segovia, G. de Vera, M. Miro, J. Ramis, M. A. Climent
Summary: The research combined electrochemical and mechanical models to successfully predict the time of initial crack occurrence and the evolution of crack width in reinforced concrete structures. This approach provides a better understanding of accelerated corrosion testing and can be helpful in designing more durable concrete structures.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Construction & Building Technology
Nikhil Ranjan, Susanta Banerjee, Sanket Nayak, Sreekanta Das
Summary: The lackluster performance of masonry structures in seismic events has been a concern for civil engineers. This research focused on internally strengthening masonry structures by enhancing the mortar with recycled nylon fibers. The reinforced mortar showed improved flexural strength and masonry specimens exhibited increased compressive, shear bond, and flexural bond strength. In-plane and out-of-plane load-carrying capacity of masonry wallettes also increased, with reduced crack width and improved ductility. Overall, the findings suggest the effectiveness of using reinforced fibers for internal strengthening of masonry structures.
JOURNAL OF BUILDING ENGINEERING
(2023)
Review
Construction & Building Technology
Peng Zhang, Cong Wang, Zhen Gao, Fei Wang
Summary: This paper provides a comprehensive review of the fracture properties of steel fiber reinforced concrete (SFRC). It emphasizes the most compelling and feasible fracture toughness and other strength enhancement methods using steel fiber (SF). The paper also reviews fracture models, evaluation parameters, and test methods used to study fracture properties of SFRC, as well as the effects of SF volume fraction and distribution on fracture properties.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Construction & Building Technology
Salifu Nasiru, Linhua Jiang, Lin Yu, Hongqiang Chu, Yu Huang, Chun Pei, Yue Gu, Weizhun Jin, Edwin Eyram Klu, Ming-Zhi Guo
Summary: This study investigated the use of recycled glass (RG) as a replacement for river sand in cement-based materials, with rice husk ash (RHA) added as an eco-friendly mineral admixture. While RG incorporation reduced strength and increased water absorption, the addition of RHA improved mechanical properties and durability of the mortar.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Engineering, Civil
Sabry Fayed, Walid Mansour, Taher A. Tawfik
Summary: This study experimentally evaluated the bearing strength of steel fiber reinforced recycled concrete aggregate (SFRAC) with different percentages of recycled concrete aggregate (RCA) substitution. The results showed that the utilization of RCA reduced the bearing strength of concrete, but the addition of steel fiber increased it. Additionally, the use of RCA improved the ductility and ultimate slip values of the concrete.
Article
Green & Sustainable Science & Technology
Abdulaziz Alsaif, Mohammad Alshannag
Summary: Laboratory tests were conducted to evaluate the flexural performance of Portland cement mortars reinforced with recycled fibers. The results showed that a blend of 0.5% RTSF and 0.5% RPF exhibited superior flexural characteristics and toughness compared to mixes containing only manufactured steel fibers. The positive synergistic effect of the fiber blends on post-cracking strength and flexural toughness was particularly pronounced at this dosage.
Article
Materials Science, Multidisciplinary
T. E. S. Lima, L. U. D. Tambara Junior, L. F. C. Nascimento, L. C. C. Demosthenes, S. N. Monteiro, A. R. G. Azevedo
Summary: This study evaluated the compatibility effect of Malva fibers on fiber-reinforced cement composites. The results showed that treated fibers had a denser microstructure and reduced formation of portlandite and calcite compared to untreated fibers. Treated fibers also exhibited higher mechanical strength and lower water absorption. Incorporating 2% of treated Malva fibers in cement-based mortars showed improved efficiency for cladding walls in building materials.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Construction & Building Technology
Lourdes Alameda Cuenca-Romero, Raquel Arroyo, Alvaro Alonso, Sara Gutierrez-Gonzalez, Veronica Calderon
Summary: In accordance with European policies, using roof waste as recyclable materials to replace aggregates in the production of new construction materials shows potential. By modifying the chemical properties of binders and adding surfactants, the mechanical strength and other properties of the materials can be improved. These eco-mortars have good adaptability to temperature and can serve as sustainable alternatives to current materials.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Construction & Building Technology
Meeju Lee, Kyeongjin Kim, Chul-Woo Chung, WooSeok Kim, Yoseok Jeong, Jaeha Lee
Summary: The study investigated the use of rPET fibers for strengthening construction materials. The smooth surface of the fibers led to weak bonds with the mortar matrix, so nano-particle and NaOH hydrolysis were used to improve the bond strength. Surface treatment using NaOH and silane coating was performed to enhance hydrophilicity and bond strength. The study found that adding 0.5 vol% of rPET fibers had a significant impact on the mechanical properties of the mortar, making it suitable for marine applications.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Construction & Building Technology
Xijun Shi, Anol Mukhopadhyay, Dan Zollinger, Kaijian Huang
Summary: The study experimentally determined the properties of RAP-PCC, calculated the critical stress and deflection of JPCP slabs using a finite element tool, and evaluated pavement performance, finding that the lower MOE of RAP-PCC may lead to a higher stress to strength ratio, increasing the risk of fatigue cracking and higher faulting and base erosion.
ROAD MATERIALS AND PAVEMENT DESIGN
(2021)
Article
Construction & Building Technology
Xijun Shi, Zachary Grasley, Joshua Hogancamp, Leonardo Brescia-Norambuena, Anal Mukhopadhyay, Dan Zollinger
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2020)
Article
Construction & Building Technology
Yong Deng, Yao Zhang, Xijun Shi, Shuguang Hou, Robert L. Lytton
Summary: This study proposed two novel mechanistic-empirical rutting models that successfully captured rutting issues in asphalt mixtures, validated their accuracy and sensitivity through laboratory testing and finite element simulations, and reasonably predicted rutting behaviors of layered structures under different loading and environmental conditions in model applications.
INTERNATIONAL JOURNAL OF PAVEMENT ENGINEERING
(2022)
Article
Construction & Building Technology
Leonardo Brescia-Norambuena, Marcelo Gonzalez, Siva Avudaiappan, Erick Saavedra Flores, Zachary Grasley
Summary: By combining silica fume, nanosilica, and polypropylene fibers, significant improvements in the performance of concrete pavements for underground mining were achieved, showing enhancements in various aspects such as compressive strength, flexural strength, and abrasion resistance.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Computer Science, Interdisciplinary Applications
Yong Deng, Xijun Shi, Yazhou Zhang, Jun Chen
Summary: This study proposes a systematic numerical modelling framework to quantify the effects of phase change material (PCM) on the early-stage rutting performance of asphalt concrete pavement. The results show that the addition of a small amount of PCM can significantly reduce the rut depth of the pavement. Advanced methodologies such as artificial intelligence and finite element simulation and model updating can be used to evaluate the effectiveness of using PCM to control pavement rutting performance.
ENGINEERING WITH COMPUTERS
(2023)
Article
Construction & Building Technology
Cesario Tavares, Zachary Grasley
Summary: The influence of sand particles, aging, and water-cement ratio on the viscoelastic relaxation modulus of cement paste and mortars was investigated. Neglecting aging during relaxation experiments led to minimal error, likely due to the short duration of experiments and nonconstant strain history causing rapid stress decay. Lower water-cement ratio samples showed similar relaxation to higher ratio samples at early ages but exhibited lower relaxation rate at later ages. Similar relaxation curves for samples with different sand content and water-cement ratios suggest a method to quantify effects by adjusting spring constants in models.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2021)
Article
Construction & Building Technology
Yang Liu, Zhendong Qian, Haibo Hu, Xijun Shi, Leilei Chen
Summary: This study proposed an effective method to predict the skid resistance of steel bridge deck pavement using experimental methods and a neural network model, finding that mixture design parameters have a stronger influence on skid resistance.
ROAD MATERIALS AND PAVEMENT DESIGN
(2022)
Review
Construction & Building Technology
Mehrab Nodehi, Togay Ozbakkaloglu, Aliakbar Gholampour, Tijani Mohammed, Xijun Shi
Summary: This article reviews and discusses the recent advances in understanding and optimizing the mechanical, durability, and microstructural properties of alkali-activated materials (AAMs) in different curing regimes. Sealing and microwave curing are found to be the most suitable curing regimes for AAMs, enhancing their physico-mechanical and microstructural properties. On the contrary, water curing and continued thermal curing are the least favorable curing regimes for AAMs, negatively affecting their mechanical properties and microstructural stability.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Green & Sustainable Science & Technology
Yong Deng, Xijun Shi, Yao Zhang
Summary: A modeling approach was proposed to determine the modulus of elasticity of Portland cement concrete containing reclaimed asphalt pavement. The study showed that this method can accurately predict the concrete performance at different curing ages and replacement levels. The proposed approach can serve as a rapid and accurate tool for determining the modulus of elasticity with any replacement levels using limited experimental data.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Construction & Building Technology
Jun Chen, Zhenhao Sun, Wenming Zhang, Xijun Shi, Jing Yuan
Summary: This study compared the anti-icing effectiveness and mechanical performance of two types of anti-icing stone mastic asphalt (SMA) through laboratory and field investigations. The results showed that LX II exhibited better anti-icing performance than MFL, with minimal effects on other properties of SMA.
INTERNATIONAL JOURNAL OF PAVEMENT ENGINEERING
(2022)
Article
Green & Sustainable Science & Technology
Yong Deng, Xijun Shi, Yan Kou, Jun Chen, Quan Shi
Summary: This paper investigates the effects of phase change materials (PCMs) on temperature field and rutting performance in asphalt concrete (AC) pavement. The study finds that by using a specific PCM, rut depth accumulation can be reduced. However, the addition of PCMs does not always lead to improved pavement rutting performance, as the thermal conductivity and phase change process need to be considered.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Engineering, Civil
Matias Gonzalez-Frederick, Leonardo Brescia-Norambuena
Summary: The construction sector is crucial to the global economy, and concrete is the most commonly used material due to its excellent construction characteristics. However, cracking is a common and significant issue that can greatly impact the cost, deadline, and quality of construction projects. Despite recognizing its importance, there is currently no clear understanding of the specific impact of cracking. This study aims to determine the impact of cracking on mining, electrical, and civil infrastructure construction projects through statistical analysis and surveys of professionals in Chile.
PRACTICE PERIODICAL ON STRUCTURAL DESIGN AND CONSTRUCTION
(2022)
Article
Engineering, Civil
Gabriel Garrido-Torres, Leonardo Brescia-Norambuena
Summary: This research aims to better understand the quantitative impact of concrete cracking in building projects by analyzing Chilean construction projects. The results showed that due to the lack of information, the global impact of cracking is obscured, resulting in estimated annual losses of USD 3.48 million in Chile.
PRACTICE PERIODICAL ON STRUCTURAL DESIGN AND CONSTRUCTION
(2022)
Article
Construction & Building Technology
Mehrab Nodehi, Jie Ren, Xijun Shi, Solomon Debbarma, Togay Ozbakkaloglu
Summary: The decreasing trend in coal fly ash production has led to a growing interest in finding alternative materials for concrete production. This study investigated the use of glass powder as a replacement for fly ash in concrete. Experimental results showed that the performance of the glass powder varied depending on the type of binding system used, with higher mechanical performance observed in the portland cement system and the opposite conclusion in the alkali-activated system.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Engineering, Civil
Jun Chen, Cheng Zhao, Xijun Shi, Junpeng Wang
Summary: This study investigated the impact of the albedo of colored pavement on urban temperature. Laboratory measurements and numerical simulations were conducted to determine the relationship between pavement albedo and temperatures. Results showed that colored pavement can reduce pavement surface temperature and nearby air temperature, with green porous portland cement concrete having the best cooling effect.
JOURNAL OF TRANSPORTATION ENGINEERING PART B-PAVEMENTS
(2023)
Article
Mechanics
Xiaolong Liu, Kelian Luo, Pengcheng Gao, Tao Cong, Xi Wang, Wenjing Wang
Summary: This paper investigates the formation mechanisms of the zig-zag crack region on the shattered rim of railway wheels. The zig-zag crack region, identified as a typical region for crack propagation in rolling contact fatigue behavior, was observed using scanning electron microscopy and transmission electron microscopy. The formation of the zig-zag morphology is attributed to the periodic deflection of the propagation path relative to the initial propagation plane, caused by the limited plastic deformation zone at the crack tip. Grain refinement and secondary cracks in the zig-zag crack region are a result of the large compressive and shear stresses induced by rolling contact loading.
ENGINEERING FRACTURE MECHANICS
(2024)
Article
Mechanics
Anastasia Iziumova, Aleksei Vshivkov, Ivan Panteleev, Virginia Mubassarova, Oleg Plekhov, Denis Davydov
Summary: The aim of this study was to investigate the correlation between structural, acoustic emission, and thermal characteristics of fatigue crack growth in titanium alloys. Cluster analysis of the acoustic emission signals revealed two different types of signals observed during the fatigue crack development. It was experimentally demonstrated that the stored energy tends to reach an asymptotic value at the final stage of fatigue crack growth and this is correlated with the twinning process intensification in titanium alloy Ti Grade 2. A correlation was assumed between the stages of change in heat flux, the cumulative energy of the first cluster of acoustic emission signals, and the crack length.
ENGINEERING FRACTURE MECHANICS
(2024)
Article
Mechanics
M. Vieira de Carvalho, I. A. Rodrigues Lopes, F. M. Andrade Pires
Summary: This study investigates the numerical challenges of fracture mechanics models within implicit quasi-static frameworks and proposes an instability criterion. The ratio of cohesive to internal power is identified as a crucial factor. Two strategies for handling fracture problems with instabilities are discussed and a comparative assessment is performed. The study also examines more complex material responses, including transformation-induced plasticity effects.
ENGINEERING FRACTURE MECHANICS
(2024)
Article
Mechanics
Thomas Duminy, Aurelien Doitrand, Sylvain Meille
Summary: This study conducted in situ wedge splitting tests on millimeter-size PMMA samples and proposed a method to determine the material tensile strength and critical energy release rate using digital image correlation and a full finite element implementation of the coupled criterion.
ENGINEERING FRACTURE MECHANICS
(2024)
Article
Mechanics
Xin Chang, Xingyi Wang, Chunhe Yang, Yintong Guo, Yanghui Wan
Summary: The influence of cyclic thermal shock and high-temperature acid etching on the Mode I fracture of shale was investigated in this study. It was found that cyclic thermal shock severely degrades the strength and fracture toughness of shale, while high-temperature acid etching treatment improves the fracture toughness. These findings are valuable for optimizing process parameters to reduce initiation pressure in deep shale formations.
ENGINEERING FRACTURE MECHANICS
(2024)
Article
Mechanics
Liaojun Yao, Mingyue Chuai, Zhangming Lyu, Xiangming Chen, Licheng Guo, R. C. Alderliesten
Summary: Methods based on fracture mechanics have been widely used in fatigue delamination growth (FDG) characterization of composite laminates. This study proposes appropriate similitude parameters to represent FDG behavior with different R-ratios.
ENGINEERING FRACTURE MECHANICS
(2024)
Article
Mechanics
Zesheng Zang, Zhonghui Li, Yue Niu, Shan Yin
Summary: This study conducted experiments and recorded signals to investigate the fracture behavior and damage evolution characteristics of coal samples. The results showed that as loading proceeds, the stress, electric potential (EP), and acoustic emission (AE) values increase, and EP and AE signals are excited when stress drops. The fracture behavior of coal samples is altered by flaw inclination, and the destruction mode becomes increasingly complicated. The damage evolution characteristics of coal samples can be evaluated and analyzed by defining the coefficient of variation (CV value) of EP and the b value of AE.
ENGINEERING FRACTURE MECHANICS
(2024)
Article
Mechanics
Clotilde Berdin, Nathalie Prud'homme
Summary: In this study, zirconia layers with different fractions of tetragonal phase and thicknesses were tested for multi-cracking behavior. Cracks perpendicular to the tensile direction were observed, showing a blunting effect into the substrate. The ratio of crack spacing at saturation to layer thickness decreased as the layer thickness increased. Unit cell modeling was used to establish a relationship between crack spacing and layer strength, which fell within the bounds of Hu and Evans model and was found to be insensitive to the tetragonal zirconia fraction.
ENGINEERING FRACTURE MECHANICS
(2024)
Article
Mechanics
Huadong Zhang, Weichen Kong, Y. H. Liu, Yuh J. Chao
Summary: Williams' series expansion crack tip solution in linear elasticity is modified to include a uniform crack face pressure. Practical methods to calculate T-stress from near crack tip stresses are outlined. The analytical results are consistent with numerical results.
ENGINEERING FRACTURE MECHANICS
(2024)
Article
Mechanics
Jiahao Kong, Haoyue Han, Tao Wang, Guangyan Huang, Zhuo Zhuang
Summary: This paper introduces a phase-field model for polymer foam materials by combining the phase-field method with the crushable foam model. The model is calibrated using experimental data and successfully simulates the fracture processes of polyurethane under different loading conditions. The study is important for the engineering applications of polymer foam materials.
ENGINEERING FRACTURE MECHANICS
(2024)
