The effect of carbon nanotubes on the flowability, mechanical, microstructural and durability properties of cementitious composite: An overview Suman Kumar Adhikary, Žymantas Rudžionis, R Rajapriya Sustainability Switzerland, 2020 Excellent mechanical properties and chemical stability make carbon nanotubes (CNTs) some of the most promising nanomaterials that can be used in cementitious composites to improve their performance. However, the difficulty of CNTs’ dispersion within the cementitious structure still exists and thus prevents the homogeneous distribution of CNTs. The homogeneous distribution of CNTs within a composite structure plays an essential role that can have a positive effect on the mechanical performance of CNT-cement composites. This paper introduces the methods for the production of CNTs and provides useful information about the influence of CNTs on the flowability, mechanical performance, microstructural changes and hydration of cement composites. The influences of water-cement ratio, used surfactants and various doses of CNTs on the properties of cementitious composites were also studied.
Strength and Microstructural Behaviour of Concrete Incorporating Laterite sand in Binary Blended Cement R. Raja, P. Vijayan Revista De La Construccion, 2020 Laterite, due to its wide availability and low cost, is considered as a societal building material in tropical and sub-tropical regions of the world. Excavation of the laterite leaves laterite stones as scrap which accounts for around 25-30%. These scraps being a hindrance for the further excavation of the laterite in the quarries can be crushed and used to meet the demand of fine aggregates in the construction industry. Performance indicators such as workability, compressive, split-tensile and flexural strength are measured to evaluate the suitability. M30 grade of concrete specimens were produced with these crushed scraps by replacing M-sand at the intervals of 25% ranging from 0% to 100%. Laterite replacement of 25% could enhance the performance after 28 days. Not limiting only to strength characteristics, its morphological features were also understood by conducting Scanning Electron Microscopy (SEM), Energy Dispersive X-ray Spectroscopy (EDS), X-Ray Diffraction (XRD) and Thermogravimetric analysis (TGA) for the optimum mixes. Laterite, due to its wide availability and low cost, is considered as a societal building material in tropical and sub-tropical regions of the world. Excavation of the laterite leaves laterite stones as scrap which accounts for around 25-30%. These scraps being a hindrance for the further excavation of the laterite in the quarries can be crushed and used to meet the demand of fine aggregates in the construction industry. Performance indicators such as workability, compressive, split-tensile and flexural strength are measured to evaluate the suitability. M30 grade of concrete specimens were produced with these crushed scraps by replacing M-sand at the intervals of 25% ranging from 0% to 100%. Laterite replacement of 25% could enhance the performance after 28 days. Not limiting only to strength characteristics, its morphological features were also understood by conducting Scanning Electron Microscopy (SEM), Energy Dispersive X-ray Spectroscopy (EDS), X-Ray Diffraction (XRD) and Thermogravimetric analysis (TGA) for the optimum mixes.
Effect of cracks on the chloride peneration in concrete International Journal of Applied Engineering Research, 2015
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Strength and microstructural behaviour of concrete incorporating laterite sand in binary blended cement R Raja, P Vijayan Revista de la Construcción 19 (3), 422-430 , 2020 2020 Citations: 15
The effect of carbon nanotubes on the flowability, mechanical, microstructural and durability properties of cementitious composite: An overview SK Adhikary, Ž Rudžionis, R Rajapriya Sustainability 12 (20), 8362 , 2020 2020 Citations: 84
Study on compressive strength of different grades of concrete using laterite sand KS Urmila, R Rajapriya, V Ponmalar International Conference on Sustainable Environment and Civil Engineering … , 2019 2019
Strength properties and Microstructural characterization of mortar samples using laterite as a fine aggregate R Rajapriya, V Ponmalar The Eleventh Structural Engineering Convention - (SEC-2018), Jadavpur … , 2018 2018
Effect of cracks on the chloride penetration in concrete R Rajapriya, B Sangoju, S Geetha International Conference on Advances in Biotechnology, Civil and Mechanical … , 2015 2015
MOST CITED SCHOLAR PUBLICATIONS
The effect of carbon nanotubes on the flowability, mechanical, microstructural and durability properties of cementitious composite: An overview SK Adhikary, Ž Rudžionis, R Rajapriya Sustainability 12 (20), 8362 , 2020 2020 Citations: 84
Durability studies on fly-ash based laterized concrete: a cleaner production perspective to supplement laterite scraps and manufactured sand as fine aggregates R Raja, P Vijayan, S Kumar Journal of Cleaner Production 366, 132908 , 2022 2022 Citations: 32
Investigations on mechanical characteristics and microstructural behavior of laterized high strength concrete mix R Raja, P Vijayan Arabian Journal for Science and Engineering 46 (11), 10901-10916 , 2021 2021 Citations: 25
Cupola slag as a green concrete-making material and its performance characteristics-A review R Raja, S Kumar Renewable and Sustainable Energy Reviews 185, 113573 , 2023 2023 Citations: 18
Strength and microstructural behaviour of concrete incorporating laterite sand in binary blended cement R Raja, P Vijayan Revista de la Construcción 19 (3), 422-430 , 2020 2020 Citations: 15
Exploring the performance of Fe-Al rich sand in fly ash-based cementitious system in the context of a sustainable built environment R Raja, P Vijayan, S Kumar Materials Today Communications 35, 105931 , 2023 2023 Citations: 12
Study on the mechanical behaviour of different grades of concrete incorporating crushed laterite scraps as fine aggregate R Rajapriya, V Ponmalar 3rd International Conference on Innovative Technologies for Clean and … , 2021 2021 Citations: 5
Recent advances in Bio-Based concrete materials: A critical In-Depth review A Manoharan, R Raja, H Sharma, S Kumar World Scientific Annual Review of Functional Materials 2, 2430004 , 2024 2024 Citations: 3
CONCRETE UTILIZING FE-AL RICH SAND FROM LATERITE SCRAPS AND METHOD OF EXTRACTION FE-AL RICH SAND FOR PREPARATION THEREOF R RAJAPRIYA IN Patent 521,318 , 2024 2024
Mix Proportion Methodology and Performance Characteristics of Concrete Using Laterite Sand R Rajapriya, V Ponmalar College of Engineering-Guindy, Anna University , 2022 2022
Study on compressive strength of different grades of concrete using laterite sand KS Urmila, R Rajapriya, V Ponmalar International Conference on Sustainable Environment and Civil Engineering … , 2019 2019
Strength properties and Microstructural characterization of mortar samples using laterite as a fine aggregate R Rajapriya, V Ponmalar The Eleventh Structural Engineering Convention - (SEC-2018), Jadavpur … , 2018 2018
Effect of cracks on the chloride penetration in concrete R Rajapriya, B Sangoju, S Geetha International Conference on Advances in Biotechnology, Civil and Mechanical … , 2015 2015