Review
Construction & Building Technology
Xia Qin, Sakdirat Kaewunruen
Summary: This paper provides a comprehensive evaluation of the use of recycled steel fibres in the construction industry, comparing their mechanical properties with industrial steel fibres. It also investigates their contribution to sustainable development and the economy based on global warming potential and price data.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Meng Chen, Hanqing Si, Xiaochun Fan, Yiwei Xuan, Mingzhong Zhang
Summary: This paper presents a systematic experimental study on the dynamic compressive behaviour of recycled tyre steel fibre (RTSF) reinforced concrete. Results show that with increasing RTSF content, the slump of concrete was reduced while its air content was increased. The compressive strength of concrete at various strain rates went up with the increase of RTSF content from 0 to 0.75% but reduced with the further increase of RTSF content from 0.75% to 1.25%. The optimal dosage of RTSF for concrete was found to be 0.75% for workability, compressive strength, and dynamic compressive performance.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
J. F. Dong, Z. W. Guan, H. K. Chai, Q. Y. Wang
Summary: Experimental and numerical investigations were conducted to assess the impact of incorporating recycled coarse aggregates on the mechanical behavior of inner steel-tube reinforced concrete columns exposed to high temperature. The study found that the addition of basalt fibres decreased the tensile and flexural strength of recycled aggregate concrete specimens at room temperature, but did not affect their static elastic modulus. However, the basalt fibres improved crack resistance of the steel tube reinforced recycled aggregate concrete columns. Additionally, the mass reduction and dynamic elastic modulus decrease of basalt fibre reinforced STRC specimens were lower than those of STRC at a given RCA replacement ratio and exposure temperature. The study concludes that basalt fibre reinforced STRC columns could be effective in reducing the risk of brittle structural collapse in fire or high-temperature scenarios.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Engineering, Civil
Mansour Ghalehnovi, Arash Karimipour, Ali Anvari, Jorge de Brito
Summary: The study investigated the effect of SFRC jacketing on the flexural performance of CRARC beams. It was found that strengthening RC with 2% SF reinforced CJs substantially increased the maximum flexural strength and displacement of 100% CRARC beams.
ENGINEERING STRUCTURES
(2021)
Article
Green & Sustainable Science & Technology
Shuai Zong, Zhenzhen Liu, Shan Li, Yiyan Lu, Aohan Zheng
Summary: The study introduces steel fibres and recycled coarse aggregate to form steel-fibre-reinforced recycled aggregate concrete to enhance CDW recycling rate. Experimental results indicate that steel fibres positively influence the tensile behavior of concrete, with established predictive formulas. Recycled SFRAC is reusable and cost-effective, making the method feasible from an industrial perspective.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Mechanics
Tan Wang, Min Yu, Wentao Shan, Lihua Xu, ShanShan Cheng, Long-yuan Li
Summary: The post-fire compressive stress-strain behavior of steel fiber reinforced recycled aggregate concrete (SFR-RAC) after exposure to elevated temperatures was investigated through uniaxial compressive tests. The test considered parameters such as water-to-cement ratio, recycled concrete aggregate (RCA) substituting ratio, steel fiber content, and heated temperature. The study analyzed the failure mode, strength, elastic modulus, peak strain, and strain-stress response of the specimens. The results showed that the compressive strength and elastic modulus decreased with increased water-to-cement ratio and/or RCA substituting ratio at any exposed temperature. The steel fiber had a positive effect on the residual mechanical properties, which increased with the heated temperature.
COMPOSITE STRUCTURES
(2023)
Article
Engineering, Mechanical
M. G. Alberti, J. C. Galvez, A. Enfedaque, A. Picazo, W. J. Ramirez
Summary: Fibre reinforced concrete (FRC) has been widely used in civil and building construction as a way to reduce or replace traditional steel-bar reinforcement. Steel fibres are the most commonly used, but there have been advancements in plastic fibres as well. However, there is still a lack of understanding about the behavior of polyolefin fibre reinforced concrete (PFRC) under different fracture modes and size effects.
THEORETICAL AND APPLIED FRACTURE MECHANICS
(2022)
Article
Construction & Building Technology
Zhenzhen Liu, Yiyan Lu, Shan Li, Jiancong Liao
Summary: The study found that SRCFST columns exhibit similar shear behavior to ordinary CFST columns, with shear resistance decreasing as the shear span ratio increases and flexural strength showing an increasing trend. Applying axial compression or thickening the steel tube can provide an adequate safety margin during the plastic period.
ADVANCES IN STRUCTURAL ENGINEERING
(2021)
Article
Chemistry, Physical
Arash Karimipour, Mansour Ghalehnovi, Mohammad Golmohammadi, Jorge de Brito
Summary: In this study, 24 specimens of SCS sandwich panels were produced and tested with a new stud-bolt connector to regulate shear behavior. Increasing the diameter of the stud-bolts or using SFC in sandwich panels improved shear strength and ductility ratio, according to the research.
Article
Chemistry, Physical
Marek Lehmann, Wieslawa Glodkowska
Summary: This paper reports the research results on reinforced concrete beams made of fine aggregate fibre composite with steel fibres. The study analyzes shear capacity and diagonal cracking, finding that the developed fibre composite can be successfully used for construction elements, serving as an alternative to ordinary concrete.
Article
Construction & Building Technology
Nancy Kachouh, Tamer El-Maaddawy, Hilal El-Hassan, Bilal El-Ariss
Summary: The study investigated the effect of steel fibers on the shear behavior of concrete deep beams made with 100% recycled concrete aggregate. Results showed that steel fibers significantly improved the shear response, especially when a minimum shear reinforcement was present in the RCA beams. Additionally, using steel fibers at v(f) of 1 and 2% restored 80% and 90% of the shear capacity, respectively.
Article
Engineering, Civil
Shuai Zong, Yiyan Lu, Wentao Ma, Yuhong Yan, Chenlong Lin
Summary: Recycled concrete technology is a viable solution to construction and demolition waste issues. This study shows that the use of steel fibers improves the mechanical behavior of the specimens, especially in ductility.
ENGINEERING STRUCTURES
(2022)
Article
Construction & Building Technology
Daniel de Lima Araujo, Fausto Arantes Lobo, Barbara Gomes Martins
Summary: This study evaluated the shear stress-slip relationship in steel fibre-reinforced concrete through modified direct shear tests, proposing a model for prediction. Results showed that steel fibres played a positive role in reducing crack width and enhancing shear strength.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Haicheng Niu, Lei Wang, Jianhua Li, Jiakun Ji
Summary: Research on the utilization of recycled concrete in civil engineering applications is increasing globally, with a focus on improving mechanical properties by incorporating steel and polyvinyl alcohol fibers. Test results showed significant improvements in compressive and flexural strength with the addition of steel fibers, while polyvinyl alcohol fibers led to a decrease in cubic compressive strength but an increase in flexural strength. Mathematical expressions derived from test data provided theoretical insights into the mechanical properties of steel-polyvinyl alcohol fiber-reinforced recycled concrete.
APPLIED SCIENCES-BASEL
(2021)
Article
Engineering, Multidisciplinary
Brian Jacks Odero, Raphael Mutuku, Timothy Nyomboi, Zachary Abiero Gariy
Summary: Shear resistance by beams without stirrups in reinforced concrete (RC) beams is influenced by the complex shear mechanism, especially in structures containing recycled aggregate (RCA). This study developed a numerical shear model that considered fracture characteristics, modes I and II, along with dowel action, aggregate interlock, and the uncracked compression zone. The model successfully captured the correlation among shear arm ratio, longitudinal reinforcement ratio, maximum coarse aggregate size, and concrete strength. It was validated using experimental results from 139 concrete beams containing RCA without stirrups, and showed relatively higher shear strength predictions due to the inclusion of multiple factors.
ALEXANDRIA ENGINEERING JOURNAL
(2023)
Article
Engineering, Civil
Javad Shayanfar, Joaquim A. Barros, Mohammadali Rezazadeh
Summary: The paper proposes a new unified model for determining the concrete confinement characteristics of FRP fully/partially confined circular/square concrete columns, aiming to enhance the continuity in predicting confinement-induced improvements for different types of columns. By considering the confinement efficiency factor and confinement path effect, the model includes the substantial influence of non-homogenous concrete expansion distribution in the determination of confinement pressure. The predictive performance of the developed model is evaluated by simulating experimental tests reported in the literature, based on an extensive set of experimental results.
ENGINEERING STRUCTURES
(2022)
Article
Construction & Building Technology
Cristina Frazao, Joaquim Barros, J. Alexandre Bogas, Veronica Garcia-Cortes, Tiago Valente
Summary: The use of recycled steel fibers as an alternative to industrial steel fibers for concrete reinforcement was assessed in terms of technical and environmental impact. Numerical simulations accurately fitted experimental results to derive the tensile stress-crack width relationships of RSFRC and ISFRC. It was demonstrated that the environmental impact of RSFRC production is reduced compared to ISFRC with the same concrete strength class.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Construction & Building Technology
M. R. Mostakhdemin Hosseini, Salvador J. E. Dias, Joaquim A. O. Barros
Summary: The effect of cyclic loads on the behavior of flexurally strengthened RC slabs with prestressed NSM CFRP laminates was evaluated through an experimental program. The results showed that the strengthening intervention using prestressed carbon fiber reinforced polymer laminates had good performance under cyclic loading. Fatigue loading did not significantly affect the strengthening effect, with only one specimen failing during the fatigue loading process. The deflection of the strengthened slabs increased slightly after 1 million cycles, and the strains in the CFRP laminates also marginally increased.
STRUCTURAL CONCRETE
(2022)
Article
Engineering, Civil
Joaquim Barros, Beatriz Sanz, Petr Kabele, Rena C. Yu, Gunther Meschke, Jaime Planas, Vitor Cunha, Antonio Caggiano, Nilufer Ozyurt, Ventura Gouveria, Ab Van den Bos, Elisa Poveda, Erez Gal, Jan Cervenka, Gerrit E. Neu, Pierre Rossi, Daniel Dias-da-Costa, Peter K. Juhasz, David Cendon, Gonzalo Ruiz, Tiago Valente
Summary: Experimental research has shown that adding short fibers to cement-based materials can greatly improve the behavior of concrete structures under normal and extreme conditions. However, the current methods for evaluating predictive performance rely on simulating experimental tests, which may not be practical for structural design. Further analysis and understanding of the models and their parameters are needed to enhance their predictive capabilities.
Article
Construction & Building Technology
Javad Shayanfar, Joaquim A. O. Barros, Mohammadali Rezazadeh
Summary: A new model is developed and calibrated based on a large test database by proposing a cross-sectional and confining system unification approach. The developed model demonstrates a high reliability and suitable for design purposes by balancing the simplicity of the usage and accuracy.
STRUCTURAL CONCRETE
(2023)
Article
Construction & Building Technology
Joaquim Barros, Beatriz Sanz, Marcilio Filho, Fabio Figueiredo, Petr Kabele, Rena C. C. Yu, Guenther Meschke, Jaime Planas, Vitor Cunha, Antonio Caggiano, Niluefer Ozyurt, Ventura Gouveia, Ab van den Bos, Elisa Poveda, Erez Gal, Jan Cervenka, Gerrit E. Neu, Pierre Rossi, Daniel Dias-da-Costa, Peter K. Juhasz, David Cendon, Gonzalo Ruiz, Tiago Valente
Summary: This article describes the second blind simulation competition (BSC) organized by the fib WG 2.4.1 for assessing the predictive performance of FEM-based models in the analysis and design of FRC structures. The chosen structural system, a hybrid FRC shallow beam supported on columns or piles, demonstrates the potential of FRC in such applications and evaluates the accuracy of computational models. The experimental results obtained from testing two shallow beams are presented, including applied loads, strain measurements, and crack widths, as well as the rules and outcomes of the competition.
STRUCTURAL CONCRETE
(2023)
Article
Engineering, Civil
Javad Shayanfar, Joaquim A. O. Barros, Mohammadmahdi Abedi, Mohammadali Rezazadeh
Summary: The aim of this study is to establish unified strength and ductility models for concrete columns of circular or noncircular cross sections with fully or partially confining FRP systems. By analyzing and comparing test data predictions with available models, the proposed unified formulations were found to be highly reliable for design purposes.
JOURNAL OF COMPOSITES FOR CONSTRUCTION
(2023)
Article
Engineering, Mechanical
Mohammad Bakhshi, Joaquim A. O. Barros, Mohammadali Rezazadeh, Isabel B. Valente, Honeyeh Ramezansefat
Summary: This paper presents a novel model for predicting the impact response of steel fiber reinforced concrete (SFRC) beams. The model utilizes the principles of energy conservation and impulse-momentum theorem to calculate the maximum reaction force and peak impact force, considering the effect of volume fraction of steel fibers and the effect of strain rate on the concrete properties. The model uses the conventional beam theory and a cross-section-layered approach to express the total beam's reaction forces vs deflection relationship, and calculates the maximum midspan deflection of SFRC beams subjected to impact loading. Comparison with 121 impact tests shows that the model can estimate the maximum reaction force of SFRC beams with acceptable accuracy.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2023)
Article
Construction & Building Technology
Javad Shayanfar, Joaquim A. O. Barros, Mohammadali Rezazadeh
Summary: In this study, a new model for determining the peak compressive strength of FRP-confined concrete columns is developed by unifying the cross-sectional and confining system approach. The model is calibrated based on a large test database and demonstrates high reliability and suitability for design purposes.
STRUCTURAL CONCRETE
(2023)
Proceedings Paper
Engineering, Civil
Chandan Gowda, Joaquim Barros, Maurizio Guadagnini
Summary: An analytical model is proposed to predict the torsional moment capacity and failure type of reinforced concrete elements strengthened with near surface mounted carbon fiber reinforced polymer laminates. The model implements the thin walled space truss analogy and modified compressive field theory. The predictive performance of the model is compared against experimental data and shows good accuracy.
10TH INTERNATIONAL CONFERENCE ON FRP COMPOSITES IN CIVIL ENGINEERING (CICE 2020/2021)
(2022)
Proceedings Paper
Engineering, Civil
Javad Shayanfar, Mohammadali Rezazadeh, Joaquim A. Barros
Summary: The present study developed a new axial stress-strain model for FRP-based confinement strategies in fully/partially confined circular concrete columns. The model showed reliable predictive performance and wide applicability.
10TH INTERNATIONAL CONFERENCE ON FRP COMPOSITES IN CIVIL ENGINEERING (CICE 2020/2021)
(2022)
Proceedings Paper
Engineering, Civil
Reza MohammadiFirouz, Eduardo Pereira, Joaquim Barros
Summary: Near surface mounted (NSM) strengthening technique using fiber reinforced polymer (FRP) composite materials is a promising solution for deteriorating reinforced concrete (RC) structures. However, the use of epoxy adhesives in NSM systems has limitations, particularly in high temperature conditions. Cement-based materials show great potential as an alternative adhesive due to their incombustible nature and low thermal diffusivity. This study investigates the bonding performance of CFRP NSM strengthening technique with cement-based adhesives, demonstrating the effectiveness of the approach in enhancing bond strength under different loading conditions.
10TH INTERNATIONAL CONFERENCE ON FRP COMPOSITES IN CIVIL ENGINEERING (CICE 2020/2021)
(2022)
Proceedings Paper
Engineering, Civil
Honeyeh Ramezansefat, Mohammadali Rezazadeh, Joaquim Barros, Isabel Valente, Mohammad Bakhshi
Summary: This paper discusses the performance of steel fiber reinforced concrete (SFRC) under high strain rate tensile loads and its influencing factors. It points out the lack of prediction models for the behavior of SFRC materials under high strain rate loads in existing design codes. Therefore, the paper proposes an artificial neural network approach to accurately predict the tensile behavior of SFRC materials.
10TH INTERNATIONAL CONFERENCE ON FRP COMPOSITES IN CIVIL ENGINEERING (CICE 2020/2021)
(2022)
Proceedings Paper
Engineering, Civil
Luis Correia, Tiago Silva, Jose Sena-Cruz, Eduardo Pereira, Isabel Valente, Joaquim Barros
Summary: This study aims to develop a hybrid sandwich panel for building floor rehabilitation, consisting of steel fibre reinforced self-compacting concrete, polyurethane closed-cell foam, and glass fibre reinforced polymer. Full-scale tests were conducted to evaluate the flexural behavior of the panels.
10TH INTERNATIONAL CONFERENCE ON FRP COMPOSITES IN CIVIL ENGINEERING (CICE 2020/2021)
(2022)
Article
Engineering, Civil
Gintaris Kaklauskas, Aleksandr Sokolov, Ashkan Shakeri, Pui-Lam Ng, Joaquim A. O. Barross
Summary: This paper proposes an analytical technique for assessing the flexural behavior of steel fiber-reinforced concrete (SFRC) structural members. By combining residual stresses and tension stiffening stresses, the behavior of the tensile zone can be accurately modeled. This technique is validated against test data and provides a transparent and mechanically sound method for evaluating SFRC members.
STRUCTURAL ENGINEERING AND MECHANICS
(2022)
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)
