Conference Papers

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    Effect of waste ceramic tiles as a partial replacement of aggregates in concrete
    (Elsevier Ltd, 2019) Bommisetty, J.; Sai Keertan, T.S.; Ravitheja, A.; Mahendra, K.
    In recent constructions, the consumption of ceramic materials is increasing day by day in the form of tiles, sanitary fittings, electrical insulators etc. But a large quantity of ceramic materials changes into wastage during processing, transporting and fixing due to its brittle nature. Therefore, using these wastes in concrete production could be an effective measure in maintaining the environment and improving the properties of concrete. Hence, the crushed waste ceramic tiles were used in concrete as a replacement for natural coarse aggregates with 0%, 5%, 10%, 15% 20% and 25% of substitution. After analyzing results, the optimum value of waste ceramic tile to be used within the concrete mix with a water/cement ratio of 0.5 was determined as about 20%. The findings revealed that using waste ceramic tile lead to enhancing the properties of concrete. © 2019 Elsevier Ltd. All rights reserved. Selection and peer-review under responsibility of the scientific committee of the 1st International Conference on Manufacturing, Material Science and Engineering.
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    Physico-mechanical properties of concrete with industrial waste-A case study
    (Avestia Publishing info@avestia.com, 2019) Gayana, B.C.; Shashanka, M.; Rao, A.N.; Ram Chandar, K.
    A few waste materials, such as demolition waste, steel slag, quarry dust, fly ash are dumped in landfills. This causes environmental issues and pollution. The present study aims to examine the effect of replacing two types of waste materials i.e., quarry dust and steel slag as partial replacement of cement and sand respectively. Cement was replaced partially with quarry dust between 5 to 20% with 5% intervals and sand was replaced by 75% steel slag consistently for all the concrete mixes. The concrete cubes, beams and cylinders were tested for their strength characteristics by measuring compressive strength, flexural strength and splitting tensile strength. The maximum increase of 4%, 34% and 38% in compressive, flexural and splitting tensile strength respectively was observed with 15% quarry dust replaced with cement and 75% steel slag replaced with sand. Based on the present experimental study, partial replacement of these waste materials shall mitigate the issues occurring due to storage and also by utilizing these materials in concrete as replacement for cement and sand resulting in higher strength properties compared to the naturally available construction materials. © 2019, Avestia Publishing.
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    An experiment investigation on physical and mechanical properties of high strength concrete with suitable admixture
    (Trans Tech Publications Ltd ttp@transtec.ch, 2019) Gayana, B.C.; Shashanka, M.; Rao, A.N.; Ram Chandar, K.
    Concrete is an essential construction material. Even-though conventional concrete performs and satisfy the structures under normal conditions, a few special situations require very high compressive strength of concrete. An experimental investigation is done to develop high strength concrete with suitable admixtures and steel fibers. The properties of fresh and hardened concrete with alccofine as partial replacement for binder and poly-carboxylate ether (Glenium 8233) and steel fibers is investigated for the workability and mechanical properties i.e., compressive, splitting tensile and flexural strength of concrete. Based on the results, the strength increased with the addition of alccofine compared to the control mix. Hence, by optimum percentage of alccofine, high strength of concrete of 112 MPa can be obtained. © 2019 Trans Tech Publications Ltd, Switzerland.
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    Comparative study of natural fibre 3D braided yarn woven fabric and simply twisted yarn woven fabric reinforced epoxy composites
    (American Institute of Physics Inc. subs@aip.org, 2020) Kanakannavar, S.; Jeyaraj, P.
    In this study natural fibre 3D braided yarn plain woven fabric (NFBF) and natural fibre simply twisted yarn plain woven fabric (NFSF) are prepared and tensile tests are conducted on braided yarn, simply twisted yarn, NFBF and NFSF. Then the tensile results of braided yarn compared with simply twisted yarn and NFBF results with NFSF. The composites are manufactured by reinforcing prepared fabrics (NFBF and NFSF) with the epoxy resin. On these composites tensile and flexural properties characterisation is carried out in warp and weft directions of the fabrics. SEM analysis is used for fractured surface study. The test results showed that, simply twisted yarn and its fabrics (NFSF) are presented better strength than that of the braided yarn and its fabric (NFBF). The NFSF/epoxy composite in warp direction loading received higher tensile strength and flexural strength of about 67.12 MPa and 131 MPa. © 2020 Author(s).
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    A Comparative Study on Using Laterite and Sandstone Aggregates on Mechanical Properties of Concrete
    (Springer Science and Business Media Deutschland GmbH info@springer-sbm.com, 2021) Gayana, B.C.; Ram Chandar, K.R.; Reddy, K.R.
    Scarcity of natural aggregates in concrete construction is leading to explore the use of alternative materials, especially various industrial waste products. Mining industry is one such major source of waste materials. Sandstone, which is overlying coal seams, is the largest quantity of waste rock being produced by coal mining industry. Laterite is another waste comes from small scale quarries. An attempt is made to assess the use of laterite-GGBS and sandstone as partial replacement for sand in concrete. Sandstone samples were collected from the dumps of a coal mine in south India and laterite samples were collected from different quarries from the southwestern part of India. Various properties of mine waste samples were determined in the laboratory as per IS codes, the properties were found to be very close to that of natural river sand. Mix proportions were prepared for M20 grade concrete. Mechanical properties of concrete with different mixes (0, 25, 50, 75, and 100% replacement with sand) were determined and compared. As a result, the concrete mixes with the replacement of fine aggregates with 100% sandstone increased in strength properties i.e., compressive, splitting tensile, and flexural strength compared to laterite mixes, where the strength properties decreased with increase in replacement levels. This indicates that sandstone can be an effective replacement for the river sand in concrete. © 2021, Springer Nature Switzerland AG.
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    Engineering Properties of Heavyweight Concrete—A Review
    (Springer Science and Business Media Deutschland GmbH info@springer-sbm.com, 2021) Sharath, B.P.; Das, B.B.
    Heavyweight concrete which differs from normal weight concrete by having a higher density and special compositions to improve its attenuation properties, the density and cost of the material are really important in order to absorb gamma rays. If the main aim of developing heavyweight concrete is focussed to attenuate neutrons, then the material with less atomic weight should be embodied in the concrete mix which can in turn produce hydrogen. It is used in counterweights of bascule and lift bridges, but its general application includes in radiation shielding structures, offshore, ballasting of pipelines etc. The evolution of nuclear power into peaceful applications has given rise to an expanding use of heavy weight concrete in construction industries nowadays. Heavyweight concrete employs bulky conventional aggregates such as barites or magnetite or artificial aggregates such as Fe ore or Pb shots. This paper states a review on impact on engineering properties of Heavyweight concrete such as compressive, split tensile and flexural strength with different heavyweight aggregates as per the investigations conducted by researchers. © 2021, Springer Nature Singapore Pte Ltd.
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    Utilization of Ferrochrome and Recycled Concrete Aggregates for Sustainable Pavement Base Layers—A Laboratory Study
    (Springer Science and Business Media Deutschland GmbH, 2025) Chiranjeevi, K.; Kumar, D.H.; Yatish, R.G.; Talkeri, H.T.; Mulangi, R.H.; Ravi Shankar, A.U.
    The paramount importance of incorporating alternative aggregates cannot be overstated, as it plays a pivotal role in resource conservation, sustainability promotion, and efficient waste management. This study focuses on the utilization of ferrochrome aggregate (FCA) and recycled concrete aggregate (RCA) within cement-treated base layers, aiming to entirely substitute natural coarse aggregate (NCA). The research meticulously fabricated cement-treated recycled and ferrochrome aggregate (CTRFA) samples with cement contents of 3, 5, and 7%. These specimens incorporated varying blends of RCA and FCA, ranging from 0 to 100%. In this investigation, strength properties such as unconfined compressive strength (UCS), flexural strength, elastic modulus, and indirect tensile strength (ITS) were performed alongside durability. The experimental results indicated that the cement content exerted a more pronounced influence on both strength and durability. The CTRFA mixes containing 50% RCA, 50% FCA, and 5% cement meet IRC 37 2018 strength and durability standards and can be used as a base layer for flexible pavement instead of conventional cement-treated base (CTB). © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2025.