Article
Polymer Science
Xiangjie Zhuang, Junsen Ma, Yi Dan, Long Jiang, Yun Huang
Summary: This study investigated the influence of interface structure on the hydrothermal aging of four carbon fiber reinforced epoxy resin composites (CFRPs). The results showed that CF-COOH-EP had the highest moisture absorption due to the presence of hydrophilic groups in the interface. The addition of Mxene nanosheets helped reduce the moisture absorption rate of CF-COOH/MXene/EP and CF-CONH-MXene-EP, making it similar to that of CF/EP. The interface structure also had an impact on the inter-laminar shear strength (ILSS) changes during aging, with CF-COOH-EP showing the fastest aging and lowest ILSS retention rate, while CF-CONH-MXene-EP exhibited the highest ILSS after aging.
POLYMER DEGRADATION AND STABILITY
(2023)
Article
Polymer Science
Tatjana Glaskova-Kuzmina, Aldobenedetto Zotti, Anna Borriello, Mauro Zarrelli, Andrey Aniskevich
Summary: The study investigated the effect of hybrid carbon nanofillers on the electrical and flexural properties for an epoxy matrix and basalt fiber reinforcing composite subjected to seasonal water absorption. Results showed minimal changes in mechanical properties after environmental ageing. Nanomodified BFRCs exhibited slightly higher effects on flexural characteristics due to higher defectiveness. Nanocomposites showed higher electrical conductivity, with UD BFRC/NC showing significantly improved conductivity after hydrothermal ageing, enhancing damage monitoring capabilities.
Article
Mechanics
Indraneel R. Chowdhury, Noel P. O'Dowd, Anthony J. Comer
Summary: This study focuses on the failure analysis of NCF basalt epoxy composite using in-situ 3-point bend test, standard flexure, and ILSS tests. The results reveal that the damage initiating failure mode is fiber/matrix debonding and matrix cracking in the 90° sub-ply, while final failure occurs due to fiber buckling in the neighboring 0° sub-plies. Finite element analysis shows that shear stresses ranging between 35 and 45 MPa control the matrix cracking in the 90° sub-ply.
COMPOSITE STRUCTURES
(2023)
Review
Polymer Science
James Thomason, Georgios Xypolias
Summary: The use of glass fiber-reinforced polymer (GFRP) composites in load-carrying constructions has increased significantly in recent decades. Vinyl ester (VE) resins are being increasingly used in these structural composites, and their long-term environmental exposure consequences need better understanding. Testing the environmental durability of new VE-based GFRPs is time-consuming and costly, and accelerated hydrothermal aging is often used. This paper reviews the literature on hydrothermal aging of VE-based GFRP, focusing on moisture-induced aging, voids, and the fiber-matrix interface on composite mechanical performance.
Article
Engineering, Chemical
Zahra Haeri, Mohammad Ramezanzadeh, Bahram Ramezanzadeh
Summary: In this research, GO/Ce-TA MOF was developed for the first time to enhance the mechanical properties of the epoxy matrix, improving the mechanical and thermal stability of the coatings. The high uniform dispersion and toughening properties of Ce-TA MOF particles in the epoxy matrix were validated in the experiments.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2021)
Article
Polymer Science
Adnan Amjad, M. Shukur Zainol Abidin, Hassan Alshahrani, Aslina Anjang Ab Rahman
Summary: Natural fibre reinforced polymer composites are increasingly popular in automotive applications, with the addition of Al2O3 and MgO nanofillers showing significant improvements in mechanical properties. Surface treatment of fibres and nanofiller addition play crucial roles in enhancing the overall performance of the composites, demonstrating superior tensile, flexural, and impact properties in the hybrid nanocomposites. The SEM images reveal various defects that impact the mechanical behavior of the composites, highlighting the importance of optimizing the composition for enhanced performance.
Article
Materials Science, Composites
Qibin Xu, Shengchang Zhang, Zihao Xia, Zhao Xu, Shuheng Liang, Kaixiang Wang, Yingying Zhao, Baolong Xue, Mengjin Jiang, Pengqing Liu
Summary: Inspired by diatoms, a diatom-inspired silication-oxidation strategy is used to achieve multifunctionalisation of fibre-reinforced polymeric composites (FRPC) in a simple and efficient manner, resulting in outstanding performance.
COMPOSITES SCIENCE AND TECHNOLOGY
(2023)
Review
Polymer Science
Bidita Salahuddin, Shaikh N. Faisal, Tajwar A. Baigh, Mohammed N. Alghamdi, Mohammad S. Islam, Bing Song, Xi Zhang, Shuai Gao, Shazed Aziz
Summary: Carbon fiber reinforced polymer composites are high-performance materials that can carry heavy loads and stresses. Coating carbon materials on the fiber surface is a way to enhance the interface between fiber and matrix, providing better adhesion and wettability. Various techniques are used to engineer this interface, ultimately improving the mechanical properties of the composite systems.
Article
Materials Science, Multidisciplinary
Xiao Qi, Jingwei Tian, Rui Guo, Guijun Xian
Summary: This study systematically analyzed the effects of hydrothermal aging on the properties of CFRP rods. It was found that elevated temperature and humidity accelerated water absorption and led to degradation in tensile strength, three-point bending strength, and short-beam shear strength. The most significant degradation occurred in the environment with alternating temperatures. The long-term effects of water molecules caused resin hydrolysis and debonding of the fiber-matrix interface, resulting in degradation in three-point bending and short-beam shear strength.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Characterization & Testing
Yi-Fan Niu, Yan Yan, Jia-Wei Yao
Summary: The study used PF-QNM technology to quantitatively characterize the interface structure and properties of carbon fiber/epoxy resin composites in situ, finding that the hygrothermal aging process can be divided into three stages, with different changes in interface size and properties at each stage.
Article
Materials Science, Composites
Andreas Klingler, Qinghao He, Bernd Wetzel, Tom Allen, Lin Ye, Ulf Breuer
Summary: This study investigates the effect of core-shell rubber nanoparticle and block copolymer matrix modifications on the low velocity impact resistance of thin, multi-axial carbon fibre reinforced epoxy laminates. The results show that the damage resistance is greatly enhanced to impact energies of 9 J and 13 J, but a proper bonding between matrix and the embedded fibres is essential. Lower impact energies do not activate the toughening agents effectively.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Forestry
Mohammad Hassan Mazaherifar, Hamid Zarea Hosseinabadi, Camelia Cosereanu, Camelia Cerbu, Maria Cristina Timar, Sergiu Valeriu Georgescu
Summary: This paper presents investigations on different types of fibre-reinforced epoxy-resin hybrid composites made from date palm and Calotropis procera fibres. The mechanical performance of the resulting composites was evaluated and compared through water resistance investigation and mechanical testing. The results showed that the addition of Calotropis fibres improved the flexural strength and flexural modulus of elasticity, while five-layer composites had lower values of tensile strength, tensile modulus of elasticity, impact resistance, and higher water absorption and thickness swelling compared to the three-layer composites.
Article
Materials Science, Composites
Renyong Zhao, Yun Chen, Jin Li, Songtao Liu, Yuhuai Wang, Xiaoxiao Kong, Boxue Du
Summary: In this study, the L-shaped needle-wire electrode was used to simulate the coupling direction of mechanical stress and electric field in GFRP composites. The effects of equivalent tension and compression load on the electrical tree degradation of GFRP were obtained. It was found that both tension and compression load aggravated the electrical tree degradation, and the combined action of high temperature and high pressure and external mechanical load accelerated the degradation process.
COMPOSITES SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Composites
Meiling Yan, Yucheng Liu, Wugui Jiang, Wenzhen Qin, Yi Yan, Liying Wan, Weicheng Jiao, Rongguo Wang
Summary: This study focuses on the cryogenic mechanical properties and evolution mechanism of carbon fibre reinforced epoxy resin composites. It is found that the resin molecular segments are frozen under cryogenic condition, leading to increased brittleness and reduced failure strain. In addition, the cryogenic environment enhances the packing density and intermolecular forces, resulting in increased strength and modulus of the composite material.
COMPOSITES COMMUNICATIONS
(2022)
Article
Chemistry, Applied
Arsalan Rahmani Ghohrodi, Mohammad Ramezanzadeh, Bahram Ramezanzadeh
Summary: The effects of UIO-66 nanoparticles on the thermal resistance, mechanical features, and UV resistance of epoxy-polyamide composite coatings were investigated. The results showed promising improvements in thermal and mechanical properties, as well as significant enhancement of UV-shielding properties with the presence of UIO-66 particles.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Engineering, Civil
Rui Guo, Chenggao Li, Guijun Xian
Summary: This study investigates the performance changes and degradation mechanism of fiber reinforced polymer (FRP) composite rod under hygrothermal aging conditions. The results reveal that water absorption and diffusion behavior follows a two-stage model, and resin plasticization and interfacial debonding are the main factors contributing to performance degradation.
ENGINEERING STRUCTURES
(2023)
Article
Polymer Science
Jingwei Tian, Chenggao Li, Xiao Qi, Guijun Xian
Summary: In this study, the hygrothermal aging behavior of multi-fillers reinforced epoxy composites (MFREC) was investigated through immersion experiments in different water environments. It was found that the moisture uptake and mechanical properties of MFREC were significantly influenced by the hygrothermal aging, with lower moisture uptake in saline water and a larger decrease in strength and glass transition temperature. Furthermore, the long-term life prediction of MFREC as coatings in different bridge environments was conducted, showing different strength retentions and an additional degradation in the southern environment.
EUROPEAN POLYMER JOURNAL
(2023)
Article
Engineering, Mechanical
Jingwei Tian, Xiao Qi, Chenggao Li, Guijun Xian
Summary: In this study, multi-fillers reinforced epoxy composites (MFREC) were prepared and analyzed to investigate their mechanical, thermal properties, friction behaviors, and wear mechanisms. The results showed that MFREC exhibited enhanced mechanical properties and reduced friction coefficient with increasing loads and temperatures.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Anni Wang, Xiaogang Liu, Qingrui Yue, Guijun Xian
Summary: Hybrid carbon fiber/flax reinforced polymer composites (HFRPs) are cost-effective materials for structural applications. This study investigated the property evolution of HFRP plates immersed in water at 40 and 70 degrees C for eight weeks. The water uptake and flexural properties of the HFRP samples were analyzed based on hybrid modes and fiber contents. The diffusion coefficient and equilibrium water absorption of HFRPs increased with temperature, and the deterioration of performance was more pronounced. HFRPs with carbon fibers on the surface showed better hydrothermal resistance and lower water absorption compared to other hybrid modes.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Nanoscience & Nanotechnology
Jingwei Tian, Xiao Qi, Chenggao Li, Guijun Xian
Summary: In this study, an environment-friendly and self-adhesive superhydrophobic polydopamine coating was successfully developed. The coating exhibited ideal static contact angle and roll-off angle through self-assembly technique. It showed tight internal compactness, excellent mechanical robustness, and significant mechanical stability. Furthermore, the coating had obvious self-cleaning properties and enhanced ice repellence and mechanical durability.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Mechanics
Zhen Wang, Guijun Xian, Qingrui Yue
Summary: This paper focuses on the CFRP-strengthened steel beam using a ductile adhesive and validates the effectiveness of the trapezoidal CZM. 3-D finite element models were used to simulate the mechanical response and the debonding behavior. The ductile adhesive is shown to be more appropriate due to reduced normal stress, increased mixed-mode fracture energy, and more uniform stress distribution.
COMPOSITE STRUCTURES
(2023)
Article
Mechanics
Deao Kong, Ping Zhou, Chenggao Li, Bin Hong, Guijun Xian
Summary: This study quantitatively investigated the effects of pipe and crack geometry, CFRP properties, and prestress levels on the Mode I stress intensity factor (SIF) of a prestressed CFRP-wrapped steel pipe with a through-walled crack through dimensional and finite element analysis. The results showed that the SIF was affected by the radius and wall thickness of the pipe, as well as the stiffness of the CFRP and the level of prestress. An empirical equation for calculating the Mode I SIF in the CFRP-wrapped thin-walled pipe with a through-walled crack was proposed, along with a mechanical method to calculate the decrement of pipe substrate bearing internal pressure caused by prestress.
ENGINEERING FRACTURE MECHANICS
(2023)
Article
Polymer Science
Noel Babu, Puxuan Zhang, Guijun Xian
Summary: Traditional surface treatment techniques are often insufficient for maintaining bond durability of adhesively bonded joints. The potential of using tannic acid (TA) as an additive to improve the interfacial bond durability of epoxy adhesives has not been adequately studied. In this study, an additive (TA-AGE) was synthesized and added to the epoxy, resulting in a significant improvement in the single lap shear strength. However, the hydrophilicity and water uptake characteristics of the epoxy were increased, negatively impacting its mechanical properties.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Anni Wang, Xiaogang Liu, Qingrui Yue, Guijun Xian
Summary: This article studied the impact resistance of unidirectional flax fiber and carbon fiber reinforced polymer composite plates. Drop hammer impact and compression after impact (CAI) tests were conducted to investigate the impact response, damage resistance, and impact tolerance. Acoustic emission technology was used to study the internal damage. The expansion of matrix cracks caused by the original impact was analyzed under compressive load in fiber-reinforced polymer composites (FRP).
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2023)
Article
Materials Science, Composites
Anni Wang, Peng Yin, Xiaogang Liu, Guijun Xian
Summary: Ramie fiber-reinforced polymer (RFRP) composites were studied under hydrothermal conditions to understand the influence of different resin matrices on their mechanical properties and durability. The study found that RFRP composites reinforced with phenolic resin (RFRPR) had better flexural and short-beam strength, while composites reinforced with unsaturated polyester (RFRUP) had higher water absorption and diffusion coefficients. The erosion of water molecules led to deterioration in the interfacial bonding performance of the RFRPR composite. This study lays the foundation for further promotion and application of RFRP composites.
POLYMER COMPOSITES
(2023)
Review
Materials Science, Composites
Lingyu Tian, Puxuan Zhang, Guijun Xian
Summary: Thermoplastic polymers have advantages over thermosetting resins as fiber reinforced composite matrices, but their high viscosity poses a challenge to processability. Low viscosity in situ polymerizable thermoplastic resins are considered a cost-effective solution. This paper provides an overview of the engineering, high-performance, room-temperature-processible liquid methyl methacrylate (MMA) resins and their composites. It reviews the polymerization behavior and initiators, discusses the pultrusion process and modeling, presents the mechanical properties and durability of fiber-reinforced MMA-matrix composites, and identifies challenges in their preparation and application.
POLYMER COMPOSITES
(2023)
Article
Polymer Science
Noel Babu, Puxuan Zhang, Maleck Massou, Chenggao Li, Guijun Xian
Summary: This study investigates the potential of a tannic acid-based additive to enhance the interfacial bond durability of underwater structural epoxy adhesive. The modified epoxy, M(Ep.), was prepared by incorporating 1% (optimized) TA-AGE additive into the epoxy. The incorporation of TA-AGE additive improved the underwater adhesion by strengthening the interfacial bonds through noncovalent interactions.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Xiao Qi, Jingwei Tian, Rui Guo, Guijun Xian
Summary: This study systematically analyzed the effects of hydrothermal aging on the properties of CFRP rods. It was found that elevated temperature and humidity accelerated water absorption and led to degradation in tensile strength, three-point bending strength, and short-beam shear strength. The most significant degradation occurred in the environment with alternating temperatures. The long-term effects of water molecules caused resin hydrolysis and debonding of the fiber-matrix interface, resulting in degradation in three-point bending and short-beam shear strength.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Review
Materials Science, Multidisciplinary
Xiao Qi, Jingwei Tian, Guijun Xian
Summary: In this paper, the hydrothermal ageing of CFRPs is comprehensively summarized, including water uptake process, property degradation, and prediction models. The different stages of ageing are characterized by the evolution of mechanical properties. The three typical model methods for life prediction of CFRPs are compared in terms of accuracy, applicability, reliability, precision, practicality, environmental factors, and degradation mechanisms.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Engineering, Civil
Maleck Massou, Noel Babu, Guijun Xian
Summary: This study examines the effects of seawater immersion at different temperatures on the degradation and viscoelastic behavior of carbon fiber-reinforced polymer (CFRP) composite plates. The results show that immersion in seawater significantly reduces the interlaminar shear strength (ILSS) of CFRP plates, particularly at higher temperatures and longer immersion times. However, the overall tensile properties are minimally affected. Dynamic mechanical analysis reveals a decrease in damping, indicating a reduction in fiber-matrix adhesion. Long-term life prediction suggests that CFRP plates subjected to seawater immersion are susceptible to degradation, with a stable retention of 70% of the interlaminar shear strength in the composite laminate.
Article
Construction & Building Technology
Qi Jiang, Wei Liu, Shaopeng Wu, Xuanwen Gou
Summary: This study analyzes the erosion mechanisms of NaCl solution on asphalt concrete and finds that NaCl solution softens asphalt and promotes the intrusion of crystalline salt into it. Salt crystallization alters the surface roughness of aggregates, resulting in a decrease in skid resistance but an improvement in compressive strength. Additionally, the concentration of NaCl solution initially has no significant impact on the mechanical performance of asphalt concrete, but its domination gradually increases with the intensification of cyclic effects.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Lili Kan, Lan-qing Dai, Ning Kong, Bin Peng, Fei Wang
Summary: This paper investigates the effect of freezing and thawing cycles on the tensile behavior of cracked ultra-high performance concrete (UHPC). The results show that long-term freezing and thawing action deteriorates the cracking strength, tensile strength, tensile strain, and strain energy of cracked UHPC. On the other hand, the action of water generally favors the development of tensile properties of UHPC. The crack distribution tends to be unsaturated under freezing and thawing environment, and the re-hydration reaction is hindered. The pore structure near the crack varies under different environments.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Xin Xiao, Jingwei Li, Qingke Meng, Xiangshan Hou, Yanhui Liu, Xujiang Wang, Wenlong Wang, Shengtao Lu, Yuzhong Li, Yanpeng Mao, Tong Li
Summary: Preparing gypsum-based self-leveling mortar (GSLM) using beta-hemihydrate gypsum and solid wastes-derived sulfoaluminate cement (WSAC) can improve the mechanical performance of the mortar, but phosphorus impurities can weaken the hydration speed and degree.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Sihang Bao, Junzhen Di, Yanrong Dong, Ziqing Gao, Qing Gu, Yuanfang Zhao, Hongyu Zhai
Summary: Tailings dam break and leakage accidents pose a threat to the safety of people in mining areas and cause severe environmental pollution. This study focuses on solidifying tailing sand using microbial induced calcite precipitation (MICP) to improve strength and fix heavy metals. The curing time of MICP bio-cemented tailings is found to significantly impact the strength of tailings, while its effect on heavy metal fixation is minimal. The optimized MICP curing time is 10 days, resulting in improved strength and cementation of tailings particles.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Ferhat Benmahiddine, Fares Bennai, Achraf Charaka, Ameur El Amine Hamami, Abdelkader Tahakourt, Rafik Belarbi
Summary: This paper studied the effects of hysteresis on the hygrothermal behavior at the building scale. Through laboratory validation and numerical simulations, it was found that hysteresis has a significant impact on the relative humidity and total heat fluxes in buildings, while it does not have a noticeable effect on temperature variations.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
You Gao, Wei He, Xiayang Zhang, De'an Sun, Pei Li
Summary: This study determined the boundary line between the swelling and compression deformation zone in lateritic clay through wetting tests, and proposed a simple bimodal SWRC model. It also found that the existing strength model underestimated the tested values in the medium to high suction range, therefore a segmented strength equation was introduced for enhanced predictions of the strength properties of lateritic clay.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Prabhath Ranjan Kumar Soda, Asheer Mogal, Kalyan Chakravarthy, Nikhil Thota, Nimish Bandaru, Sanjay Kumar Shukla, K. M. Mini
Summary: This study investigates the use of encapsulated bacteria to improve the self-healing ability of concrete. Through various tests, it is found that using 20% cement-coated alginate beads (CCAB) and 5% nanosilica (NS) can achieve optimal strength and healing. This research is significant for enhancing the durability of concrete.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Shizhe Wang, Haiping Wu, Wen Yang, Wei Wang, Zhibo Zhu, Kun Nie, Luoxin Wang, Hua Wang, Jing Wu
Summary: In this study, photothermal-heat storage concrete (PHSC) was developed with excellent photothermal conversion performance and heat storage capacity. By absorbing and storing solar energy during the day and releasing it at night, PHSC can effectively reduce energy consumption in buildings.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Robin Deb, Jialuo He, Geetika Mishra, Yaghoob (Amir) Farnam
Summary: Incorporation techniques of phase change materials in cementitious composites have a significant influence on thermal properties. This study investigated the thermal behavior of low-temperature PCM when subjected to varying temperature change rates and pore confinement inside the porous network of lightweight aggregates. The results showed that ramp rates affect the nucleation and crystallization growth process during the phase transition, and the pore structure of the aggregates affects the supercooling phenomenon and confinement pressure of the PCM.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Eduardo Ferreira, Payam Sotoudeh, Dagmar Svecova
Summary: This study investigates the fatigue behavior of concrete under different stress reversal conditions. The results indicate that stress reversal generally causes more severe damage and reduces the cycles to failure compared to tensile fatigue. Additionally, adding some level of compression contributes to the energy required for failure under stress reversal fatigue. Specimens with higher concentration of fractured aggregates achieve longer fatigue lives.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Mag Raj Gehlot, Sandeep Shrivastava
Summary: This study evaluates the compatibility relationship between plaster bonds and the substrate under an accelerated aging environment, and finds that incorporating an appropriate amount of granite cutting waste can improve the strength parameters and adhesion of the cement mortar.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Min Zhang, Qirui Luo, Mingke Deng, Shixing Zhao
Summary: This study investigated the bond behavior between carbon FRCM composites with added short fibers and concrete substrates. The effects of different factors were considered and 36 specimens were tested and discussed. The experimental results were analyzed in terms of failure mode, load-slip curve, and characteristic parameters, and the contribution of weft yarns was taken into account in the developed bondslip model.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Dengkai Liu, Hongniao Chen, Ray Kai Leung Su
Summary: The susceptibility of building stones to fire and high temperature was investigated in this study by examining their physical and mechanical properties. The results show that both compressive and tensile properties of stones are affected by temperature changes. The tensile strength is particularly sensitive to temperature changes, requiring special attention to the components subjected to tensile stress in stone buildings. Principal component analysis was used to predict the mechanical properties of stones, providing a new method for calculating the residual mechanical properties after high temperature or fire.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Joso Maria Raposo, Eduardo Cavaco, Luis Costa Neves, Eduardo Julio
Summary: This paper investigates the correlation between the friction coefficient and the surface roughness of concrete-to-concrete interfaces. Experimental tests were performed on specimens with different surface treatments, and the surface roughness parameters were analyzed and correlated with the shear strength and friction coefficient. The results showed that certain roughness parameters had a strong positive correlation with the friction coefficient, while others had little or no correlation. A novel combined roughness parameter with optimized correlation was proposed.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Chiara Riccardi, Massimo Losa
Summary: The interest in using bio materials in asphalt pavements is growing due to economic reasons and environmental benefits. This study aimed to review the use of bio extenders as additives in binders, with a focus on replacements greater than 20% of fossil binder. The properties of bio-extended binders were found to vary substantially depending on the biomass source and production process.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
