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Article
Engineering, Civil
Xin-Yu Zhao et al.
Summary: This paper presents an alternative approach to evaluating the performance of recycled aggregate concrete columns using FRP jacketing. The XGBoost method and beetle antennae search metaheuristic algorithm are used to optimize the model, and a synthetic data generator is introduced to supplement the training data. The developed model outperforms existing models and improves the understanding of the axial stress-strain behavior of FRP-confined concrete.
THIN-WALLED STRUCTURES
(2023)
Article
Construction & Building Technology
Kaijian Zhang et al.
Summary: The carbonation behavior of seawater sea sand recycled aggregate concrete was investigated in this study. The results showed that the replacement ratio of recycled coarse aggregate and the type of fine aggregate had an impact on the carbonation depth. Sea sand was found to be the most suitable fine aggregate when the replacement ratio of recycled coarse aggregate was not less than 50%, while river sand was the most suitable when the replacement ratio was not more than 30%.
ADVANCES IN STRUCTURAL ENGINEERING
(2022)
Review
Construction & Building Technology
Chunhua Feng et al.
Summary: With the increasing consumption of construction resources and the pressure caused by construction waste on the environment, the use of recycled aggregate (RA) has become a hot topic worldwide. This paper summarizes the research results of RA enhancement technologies, discusses the problems and proposes potential solutions. The study shows that different enhancement technologies can improve the properties of RA, but further development is needed for its engineering application.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Vanesa Ortega-Lopez et al.
Summary: This study analyzes the strength development and durability behavior of a fiber reinforced self-compacting concrete. The addition of fibers and GGBFS affects the strength and porosity of the concrete, but the mixes still comply with the requirements for use in aggressive environments.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Engineering, Chemical
Zhi-hai He et al.
Summary: The influence mechanism of recycled concrete powder (RCP) on the multi-scale characteristics of UHPC mixtures was investigated. It was found that incorporating 30% RCP in UHPC mixtures reduced early-age autogenous shrinkage and improved mechanical properties, indicating that RCP has the potential to enhance the performance of UHPC.
Review
Engineering, Environmental
Yury A. Villagran-Zaccardi et al.
Summary: Global demand for buildings and infrastructure is rising, with concrete being the preferred construction material. However, overexploitation of natural resources and environmental crises are linked to concrete production. While waste concrete is abundant, challenges remain in its full recycling, especially concerning fine fractions.
RESOURCES CONSERVATION AND RECYCLING
(2022)
Article
Green & Sustainable Science & Technology
Miren Etxeberria et al.
Summary: The use of recycled aggregate to reduce the over-exploitation of raw aggregates is necessary. This study analysed and categorised the properties of water-washed, fine and coarse, recycled aggregates following European Normalization (EN) specification. The results showed that plain recycled concrete produced using 100% recycled concrete aggregates had adequate properties and could be used for large-scale production. The addition of admixtures improved the workability and properties of the concrete, while reducing environmental impact.
Review
Construction & Building Technology
J. Y. Hu et al.
Summary: This paper provides a comprehensive review on corrosion detection techniques and protection methods for existing reinforced concrete structures. It categorizes the detection methods into direct and indirect approaches, and discusses the prevention and therapy solutions for corrosion protection. The paper is valuable for researchers working on steel corrosion detection and advanced strengthening strategies.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Review
Construction & Building Technology
Xinyu Zheng et al.
Summary: This paper provides a comprehensive review of the effects of freeze-thaw cycles (FTCs) on the thermophysical and mechanical properties of concrete in cold regions. It analyzes multiple factors, such as water/binder ratio, air content, and number of FTCs, and summarizes the available theories and test methods for characterizing freeze-thaw damage. The paper suggests that future investigations should consider multiple factors and fields to reveal the micromechanism of freezing and thawing damage and develop multiscale models and techniques.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Review
Construction & Building Technology
Victor Revilla-Cuesta et al.
Summary: This literature review explores how the properties of Recycled Concrete Aggregate (RCA) affect the strength behavior of Self-Compacting Concrete (SCC) and how changes in RCA composition can modify its expected effect. It is found that, when the flowability of SCC remains constant, the compressive strength decreases linearly with increasing RCA content, albeit to a lesser extent if the RCA is obtained from higher strength concrete. Reducing the water-to-cement ratio can compensate for this loss of strength, while maintaining suitable flowability. The water absorption of RCA and its interaction with other mix components increase the variability of RCA's effect. Therefore, it is recommended to experimentally study the RCA and SCC produced with it before use.
INFORMES DE LA CONSTRUCCION
(2022)
Article
Construction & Building Technology
Peng Deng et al.
Summary: This study investigated the bonding behavior of MLC and BFRP bars exposed to dry-wet cycles of simulated seawater using pull-out tests. The results showed that the dry-wet cycles had a significant impact on the ultimate bond strength and slippage, causing the former to decrease and the latter to increase.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2022)
Review
Engineering, Environmental
Pablo Busch et al.
Summary: This study reviews previous research on cement and concrete decarbonization and analyzes the most common proposed measures along with their level of action, stakeholders involved, barriers to implementation, and policy actions. The primary technical measures identified for decarbonization include improved energy efficiency, fuel switching, carbon capture utilization and storage, and reduction of the clinker-to-cement ratio for cement production, and alternative binders, material and construction efficiency, and CO2 uptake by concrete for concrete production and end-uses. However, there is less clarity about preferred policy solutions and key barriers, indicating a need for further research.
RESOURCES CONSERVATION AND RECYCLING
(2022)
Review
Chemistry, Physical
San Luo et al.
Summary: This study summarizes the important findings of the freeze-thaw durability performance of concrete pavement, identifies knowledge gaps, and proposes future research needs. The study reveals that external loading and environmental factors can accelerate freeze-thaw damage and suggests various methods to mitigate the damage. The results of this study are important for understanding how to enhance the freeze-thaw durability of concrete pavement.
Review
Construction & Building Technology
Ariel Miranda de Souza et al.
Summary: This review article assesses the environmental impacts of self-compacting concretes (SCC) and analyzes existing dosing methodologies and the incorporation of different residues. The study finds that the eco-efficiency of SCC can be improved by using an efficient dosing methodology and incorporating residues.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Review
Materials Science, Multidisciplinary
Ganesh Naidu Gopu et al.
Summary: In the last few decades, corrosion study of conventional reinforcement in concrete has been given wider importance due to the losses occurring in monitoring concrete structures. The presence of chloride ions is known to be one of the significant factors contributing to the corrosion of reinforcing steel. Steel fibers and glass fibers have been found to have less impact on cracked sections in a chloride environment and can resist chloride infiltration.
Article
Construction & Building Technology
F. Fiol et al.
Summary: This study analyzed the mechanical properties and physical characteristics related to transport mechanisms of recycled self-compacting concrete, demonstrating that the use of crushed precast concrete waste is a viable and sustainable alternative. The mechanical properties of recycled SCC are similar to those of control SCC, and the durability meets the standards for high-quality concrete.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Biao Li et al.
Summary: This study examined the rheological properties and compressive strength of concrete containing recycled fine aggregate (RFA) with different particle size ranges. The results showed that the developed polycarboxylate superplasticizer was more compatible with RFA and different particle size ranges of RFA had a clear impact on the compressive strength of concrete.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Engineering, Civil
Ali A. Abdulhameed et al.
Summary: The study demonstrates that incorporating rubber aggregate and oil palm fiber into concrete cores in SCS structures can significantly enhance energy absorption capacity, improve impact resistance and ductility of materials, and provide important structural advantages.
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
(2021)
Article
Engineering, Civil
Feng Yu et al.
Summary: The study found that the PVA fiber content and replacement ratio of RCA have significant influences on the flexural performance of concrete slabs, affecting parameters such as ultimate moment, cracking moment, moment corresponding to crack width, and yield moment. By proposing applicable calculation formulas, the flexural capacities of PVA fiber-reinforced recycled concrete slabs can be conveniently predicted.
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
(2021)
Article
Construction & Building Technology
Zhi-hai He et al.
Summary: The research suggests that using an appropriate amount of recycled brick powder (RBP) as a replacement for silica fume can enhance the mechanical strength and reduce autogenous shrinkage in ultra-high performance concrete. Additionally, it improves the microstructure and performance of the concrete mixture.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
David Dominguez-Santos
Summary: This study compares the performance and structural performance of ordinary concrete blocks and blocks incorporating different types of wood additives (such as sawdust and wood shavings) in medium and high-rise building frames.
INFORMES DE LA CONSTRUCCION
(2021)
Article
Green & Sustainable Science & Technology
Hai-bo Hu et al.
Summary: The study shows that enhancing the properties of RCAs with zeolite powder-cement pre-coating can improve the compressive strength and reduce the dry shrinkage strain of concrete, thereby enhancing its overall performance. Compared to concrete containing RCAs, concrete containing ERCAs displays better performance in terms of compressive strength and dry shrinkage strain.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Construction & Building Technology
B. Cantero et al.
Summary: The research found that partial replacement of Portland cement and aggregate in concrete can increase porosity and reduce electrical resistivity, without compromising durability. The addition of GRC had the greatest impact on penetration depth of pressurized water, permeability coefficient, and sorptivity, while curing time had the most significant effect on electrical resistivity and shrinkage.
CEMENT & CONCRETE COMPOSITES
(2021)
Article
Construction & Building Technology
Beibei Xiong et al.
Summary: This study investigated the high-strain rate compressive behavior of concrete made with different levels of substitution and types of coarse aggregate. The results showed that Recycled Aggregate Concrete (RAC) and Recycled clay Bricks Concrete (RBC) are more strain-rate sensitive than Natural Aggregate Concrete (NAC), with the Dynamic Increase Factor (DIF) depending significantly on the level of substitution in RAC.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
J. J. Xu et al.
Summary: This paper presents a Bayesian model updating approach for evaluating and updating existing deterministic models for the mechanical properties of recycled aggregate concrete (RAC), improving the accuracy and applicability of prediction performances. Using Bayesian parameter estimation technique, the important parameters in the updating process are assessed and the selected deterministic models for RAC mechanical performances are accordingly updated.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Hai-bo Hu et al.
Summary: The properties of recycled coarse aggregates have been improved through four different treatments in this study, with the most significant improvement seen in the RCAs pre-coated by ZP-C slurry. The treated RCAs showed reduced crush value and water absorption, as well as increased apparent density. Additionally, there is a linear relationship between crack width and crush value or water absorption of RCAs.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Wichian Chalee et al.
Summary: Through a 7-year field investigation, it was found that adding 15-25% fly ash significantly improves the durability performance of RCA concrete in marine environments, providing higher resistance to destruction compared to NA concrete with the same water-to-binder ratio.
INTERNATIONAL JOURNAL OF CONCRETE STRUCTURES AND MATERIALS
(2021)
Article
Construction & Building Technology
Jiuwen Bao et al.
CONSTRUCTION AND BUILDING MATERIALS
(2020)
Article
Construction & Building Technology
Gabriella Puente de Andrade et al.
CONSTRUCTION AND BUILDING MATERIALS
(2020)
Article
Chemistry, Multidisciplinary
F. Fiol et al.
APPLIED SCIENCES-BASEL
(2020)
Article
Construction & Building Technology
Sara Almeida Santos et al.
MAGAZINE OF CONCRETE RESEARCH
(2019)
Review
Construction & Building Technology
S. Santos et al.
JOURNAL OF BUILDING ENGINEERING
(2019)
Article
Construction & Building Technology
A. Santamaria et al.
CONSTRUCTION AND BUILDING MATERIALS
(2018)
Article
Construction & Building Technology
Navdeep Singh et al.
CONSTRUCTION AND BUILDING MATERIALS
(2018)
Article
Construction & Building Technology
F. Fiol et al.
CONSTRUCTION AND BUILDING MATERIALS
(2018)
Article
Construction & Building Technology
Vanesa Ortega-Lopez et al.
CONSTRUCTION AND BUILDING MATERIALS
(2018)
Article
Engineering, Civil
Jin-Jun Xu et al.
ENGINEERING STRUCTURES
(2018)
Article
Construction & Building Technology
Sudha Uthaman et al.
CONSTRUCTION AND BUILDING MATERIALS
(2018)
Article
Construction & Building Technology
Ta Van-Loc et al.
CONSTRUCTION AND BUILDING MATERIALS
(2016)
Article
Construction & Building Technology
Andreu Gonzalez-Corominas et al.
CONSTRUCTION AND BUILDING MATERIALS
(2016)
Article
Construction & Building Technology
C. Thomas et al.
CONSTRUCTION AND BUILDING MATERIALS
(2016)
Article
Construction & Building Technology
Diego Carro-Lopez et al.
CONSTRUCTION AND BUILDING MATERIALS
(2015)
Review
Engineering, Civil
L. Evangelista et al.
EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING
(2014)
Article
Construction & Building Technology
C. Thomas et al.
CONSTRUCTION AND BUILDING MATERIALS
(2013)
Article
Construction & Building Technology
MT Blanco-Varela et al.
MATERIALES DE CONSTRUCCION
(2001)
