Eco-Friendly Concrete: A Dual Surface Modification Approach for Enhanced Mechanical Performance of Recycled Coarse Aggregates Harish Panghal, Awadhesh Kumar Journal of Materials in Civil Engineering, 2025 This study aims to boost the mechanical performance of eco-friendly concrete by addressing challenges related to recycled coarse aggregates (RCA), particularly aged cement mortar adhering to aggregate surfaces. Employing a novel dual approach involving abrasion and cement slurry treatments, the research effectively removes old mortar from the RCA surface and introduces a new surface. This dual treatment minimizes strength loss and enhances the bond with the concrete matrix. Various percentages of surface-modified RCA (SMRCA) replace traditional coarse aggregates, with evaluations covering modulus of elasticity, workability, split tensile strength, flexural strength, compressive strength, porosity, and microstructural features. Results indicate that the dual modification approach significantly improves mechanical performance, particularly at a 50% SMRCA replacement rate, where compressive, flexural, and split tensile strength increase by 14.23%, 8.05%, and 4.96%, respectively. The SMRCA 75 mixture emerges as the most economically viable and aligns with eco-friendly concrete objectives.
Enhancing concrete durability and strength: An innovative approach integrating abrasion and cement slurry treatment for recycled coarse aggregates Harish Panghal, Awadhesh Kumar Structural Concrete, 2025 This study introduces a novel approach to enhance the durability and strength of concrete by integrating abrasion and cement slurry treatments on surface‐treated recycled coarse aggregates (STRCA). Initial abrasion treatment removes aged mortar from the recycled coarse aggregate (RCA) surface, while subsequent cement slurry modification provides a fresh surface, reinforcing the bond with the concrete matrix. Through detailed material analyses including x‐ray diffraction, scanning electron microscopy, and energy‐dispersive x‐ray, microstructural changes are evaluated alongside compressive strength, drying shrinkage, electrical resistivity, and chloride ion penetration of STRCA‐based concrete. Results indicate significant improvements in mechanical properties and durability as the treatments eliminate mortar and enhance the interfacial connection with cement paste. Notably, a substantial 29.37% strength enhancement is observed at 25% replacement (STRCA 25), demonstrating treatment efficacy. While a reduction of 11.58% occurs at 100% replacement (STRCA 100), up to 75% replacement shows minimal strength loss, with optimal enhancements at 50% replacement. Additionally, STRCA concrete exhibits lower drying shrinkage (11%–20% reduction) and increased electrical resistivity (28%–36% rise), indicating improved durability at 100% replacement. Enhanced resistance to chloride ion penetration is also evident, with a 22%–28% increase at 100% replacement compared to conventional RCA. Overall, this study highlights the effectiveness of dual treatments for enhancing concrete properties using STRCA.
Enhancing sustainable concrete performance: dual treatment of recycled coarse aggregates for improved strength and durability Harish Panghal, Sandeep Chaudhary, Awadhesh Kumar European Journal of Environmental and Civil Engineering, 2025 This study seeks to enhance sustainable concrete by improving the performance of recycled coarse aggregates (RCA), with a particular focus on overcoming the challenges posed by aged cement mortar on the aggregate surfaces. A novel dual treatment method, combining chemical and abrasion techniques, is employed to improve the strength and durability of surface-modified recycled coarse aggregates (SMRCA). The process begins with hydrochloric acid treatment to weaken the mortar adhesion, followed by abrasion to remove the weakened mortar. This approach minimizes strength loss and strengthens the bond between the aggregate and the concrete matrix. Comprehensive analyses, including X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy dispersive X-ray (EDX) spectroscopy, alongside tests for compressive strength, drying shrinkage, electrical resistivity, and chloride ion penetration, reveal significant improvements. Notably, a 32.64% increase in strength is observed at a 25% replacement (SMRCA 25), demonstrating the effectiveness of the treatments. While a slight reduction of 8.31% is observed at 100% replacement (SMRCA 100), substantial strength gains of 1.68% and 20.40% are achieved at 75% and 50% replacement levels, respectively. Furthermore, SMRCA concrete exhibits reduced drying shrinkage (17–21%), increased electrical resistivity (34–42%), and enhanced resistance to chloride ion penetration (28–31%) at 100% replacement, indicating improved durability compared to conventional RCA.
Sustainable Concrete: Exploring Fresh, Mechanical, Durability, and Microstructural Properties with Recycled Fine Aggregates Harish Panghal, Awadhesh Kumar Periodica Polytechnica Civil Engineering, 2024 The growing construction industry and global population have led to increased demand for concrete, resulting in increased waste production. Recycling construction and demolition (C&D) waste as recycled fine aggregates (RFA) in concrete could help reduce waste and conserve natural resources. This research delves into the meticulous examination of particle packing density within specific cylindrical volumes under standard compacting efforts, elucidating an order of compressive strength. The study comprehensively explores various concrete properties, including workability, compressive strength, flexural strength, split tensile strength, drying shrinkage, electrical resistivity, rapid chloride penetration, and microstructural characteristics (analyzed through XRD, SEM, and EDAX). RFA particles, ranging from 0.15 to 4.75 mm, were employed as partial replacements for fine aggregates, with replacement percentages varying from 0% to 100% in increments of 25%. The empirical findings underscore that the incorporation of RFA significantly enhances concrete properties. However, it was observed that surpassing the optimum replacement percentage of 25% (RFA 25) adversely impacts the concrete’s strength and microstructure. Specifically, RFA 25 exhibited remarkable improvements, with a 14.75% increase in compressive strength, a 6.61% boost in flexural strength, and a 13.14% enhancement in split tensile strength compared to conventional concrete (RC). Furthermore, RFA 25 demonstrated a 4.16% increment in drying shrinkage, 17.65% higher electrical resistivity, and an 18.83% superior resistance to chloride penetration compared to RC. The analysis of XRD, SEM, and EDAX results elucidated that at lower replacement percentages, the pozzolanic reaction enhances strength by forming additional hydration products. Conversely, at higher replacement levels, strength diminishes.
Controlled Combustion Method for Sugarcane Bagasse Ash: Performance and Sustainability in Durable Concrete Ashish Khola, Ashita Singh, Harish Panghal, A Kumar Construction and Building Materials 527 (4) , 2026 2026
Enhancing sustainable concrete performance: dual treatment of recycled coarse aggregates for improved strength and durability H Panghal, S Chaudhary, A Kumar European Journal of Environmental and Civil Engineering 29 (15), 3225-3256 , 2025 2025 Citations: 8
Eco-friendly concrete: A dual surface modification approach for enhanced mechanical performance of recycled coarse aggregates H Panghal, A Kumar Journal of Materials in Civil Engineering 37 (4), 04025052 , 2025 2025 Citations: 5
Enhancing concrete performance with treated recycled aggregates: A comparative study of coating, chemical, and abrasion treatments H Panghal, A Kumar Iranian Journal of Science and Technology, Transactions of Civil Engineering … , 2025 2025 Citations: 8
Recycled coarse aggregates in concrete: a comprehensive study of mechanical and microstructural properties H Panghal, A Kumar Iranian Journal of Science and Technology, Transactions of Civil Engineering … , 2025 2025 Citations: 14
Enhancing durability and strength of concrete through an innovative abrasion and cement slurry treatment of recycled concrete aggregates H Panghal, A Kumar Minerals Engineering 220, 109109 , 2025 2025 Citations: 18
Examining the structural viability of recycled fine aggregates in sustainable concrete H Panghal, A Kumar Journal of Mechanical Science and Technology 38 (6), 2931-2942 , 2024 2024 Citations: 14
Structural aspects of concrete incorporating recycled coarse aggregates from construction and demolished waste H Panghal, A Kumar Materiales de Construcción 74 (353), e337-e337 , 2024 2024 Citations: 8
Sustainable Concrete: Exploring Fresh, Mechanical, Durability, and Microstructural Properties with Recycled Fine Aggregates H Panghal, A Kumar Periodica Polytechnica Civil Engineering , 2024 2024 Citations: 25
Enhancing concrete durability and strength: An innovative approach integrating abrasion and cement slurry treatment for recycled coarse aggregates H Panghal, A Kumar Structural Concrete , 2024 2024 Citations: 20
Enhancing Concrete Sustainability: Assessing the Impact of Construction and Demolished Waste Aggregates on Strength and Rapid Chloride Permeability as a Durability Indicator H Panghal, A Kumar E3S Web of Conferences 453 (01009), 1 - 9 , 2023 2023 Citations: 2
Enhancing concrete performance: Surface modification of recycled coarse aggregates for sustainable construction H Panghal, A Kumar Construction and Building Materials 411 (4) , 2023 2023 Citations: 68
Effects of Surface Modified Recycled Coarse Aggregates on Concrete’s Mechanical Characteristics H Panghel, A Kumar Materials Research Express 10 (9), 095506 , 2023 2023 Citations: 21
Accelerated Sulphate Attack Study on Cement – Metakaolin – Flyash Concretes A Tiwari, A Kumar International Journal of Advanced Engineering, Research and Science 9 (5 … , 2022 2022 Citations: 1
High Early Strengths in Concrete with Fly ash and Metakaolin A Tiwari, A Kumar Indian Concrete Journal 93 (02), 69 - 74 , 2019 2019 Citations: 2
Reliability of Moment Resisting Beam Column Bolted Connections A Kumar, G Khurana International Journal of Engineering Research & Industrial Applications 10 … , 2017 2017
Improvement in Impact Resisting Capacity of Concrete using Tyre Rubber Dust A Kumar, M Lamba International Journal of Scientific Engineering and Technology 6 (7), 235 - 241 , 2017 2017 Citations: 4
Application of Nanotechnology in Improving Performance of Cementitious Composites A Kumar, I Rahman International Journal of Recent Scientific Research 8 (6), 17719 - 17724 , 2017 2017
Retrofitting of Corrosion Effected Steel Bridge Members using Steel - CFRP Bonding Systems A Kumar, R Vij International Journal of Technical Innovation in Modern Engineering … , 2017 2017
Production and Utilisation of Rice Husk Ash in Concrete and It Comparison with Silica Fume A Kumar, N Sharma International Journal of Technical Innovation in Modern Engineering and … , 2017 2017
MOST CITED SCHOLAR PUBLICATIONS
Behaviour of RCC beams after exposure to elevated temperatures A Kumar, V Kumar Journal of the Institution of Engineers. India. Civil Engineering Division … , 2003 2003 Citations: 69
Enhancing concrete performance: Surface modification of recycled coarse aggregates for sustainable construction H Panghal, A Kumar Construction and Building Materials 411 (4) , 2023 2023 Citations: 68
Design of steel structures AS Arya, A Kumar Nem Chand , 2014 2014 Citations: 39
Experimental study on light transmitting concrete A Kumar, R Ahlawat International Journal of Innovative Science, Engineering & Technology 4, 201-210 , 2017 2017 Citations: 29
Sustainable Concrete: Exploring Fresh, Mechanical, Durability, and Microstructural Properties with Recycled Fine Aggregates H Panghal, A Kumar Periodica Polytechnica Civil Engineering , 2024 2024 Citations: 25
Effects of Surface Modified Recycled Coarse Aggregates on Concrete’s Mechanical Characteristics H Panghel, A Kumar Materials Research Express 10 (9), 095506 , 2023 2023 Citations: 21
Enhancing concrete durability and strength: An innovative approach integrating abrasion and cement slurry treatment for recycled coarse aggregates H Panghal, A Kumar Structural Concrete , 2024 2024 Citations: 20
Enhancing durability and strength of concrete through an innovative abrasion and cement slurry treatment of recycled concrete aggregates H Panghal, A Kumar Minerals Engineering 220, 109109 , 2025 2025 Citations: 18
Ferrocement Box Sections-Viable Option for Floors and Roof of Multi-Storeyed Buildings A Kumar Asian Journal of Civil Engineering (Building and Housing) 6 (6), 569-582 , 2005 2005 Citations: 16
Recycled coarse aggregates in concrete: a comprehensive study of mechanical and microstructural properties H Panghal, A Kumar Iranian Journal of Science and Technology, Transactions of Civil Engineering … , 2025 2025 Citations: 14
Examining the structural viability of recycled fine aggregates in sustainable concrete H Panghal, A Kumar Journal of Mechanical Science and Technology 38 (6), 2931-2942 , 2024 2024 Citations: 14
Enhancing sustainable concrete performance: dual treatment of recycled coarse aggregates for improved strength and durability H Panghal, S Chaudhary, A Kumar European Journal of Environmental and Civil Engineering 29 (15), 3225-3256 , 2025 2025 Citations: 8
Enhancing concrete performance with treated recycled aggregates: A comparative study of coating, chemical, and abrasion treatments H Panghal, A Kumar Iranian Journal of Science and Technology, Transactions of Civil Engineering … , 2025 2025 Citations: 8
Structural aspects of concrete incorporating recycled coarse aggregates from construction and demolished waste H Panghal, A Kumar Materiales de Construcción 74 (353), e337-e337 , 2024 2024 Citations: 8
Eco-friendly concrete: A dual surface modification approach for enhanced mechanical performance of recycled coarse aggregates H Panghal, A Kumar Journal of Materials in Civil Engineering 37 (4), 04025052 , 2025 2025 Citations: 5
Improvement in Impact Resisting Capacity of Concrete using Tyre Rubber Dust A Kumar, M Lamba International Journal of Scientific Engineering and Technology 6 (7), 235 - 241 , 2017 2017 Citations: 4
Retrofitting of RCC Beams using FRP and Ferrocement Laminates A Kumar, N Modi International Journal of Scientific Engineering and Research 5 (6), 87 - 93 , 2017 2017 Citations: 3
Enhancing Concrete Sustainability: Assessing the Impact of Construction and Demolished Waste Aggregates on Strength and Rapid Chloride Permeability as a Durability Indicator H Panghal, A Kumar E3S Web of Conferences 453 (01009), 1 - 9 , 2023 2023 Citations: 2
High Early Strengths in Concrete with Fly ash and Metakaolin A Tiwari, A Kumar Indian Concrete Journal 93 (02), 69 - 74 , 2019 2019 Citations: 2
Design and Experimental Investigation on High Strength Concrete using Flyash and Silica Fume A Kumar, R Rathore International Journal of Scientific & Engineering Research 8 (5), 1778 - 1787 , 2017 2017 Citations: 2
