Thermal transmission characteristics of plastic optical fibre embedded light transmitting concrete

Shenoy, Adithya; Nayak, Gopinatha; Tantri, Adithya; Shetty, Kiran Kumar

doi:10.1016/j.matpr.2022.04.798

Cited by 8 publications

(7 citation statements)

References 34 publications

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“…This has been proven by a study of translucent concrete panels (TC), which shows us that the TC panels can reduce energy expenditure by 18% for a fiber volumetric ratio of 5.6%. This demonstrates the practicality of fabricating TC panels [32]. Due to the high demand for energy in the construction industry, along with its increasing price and market instability, it is crucial to solve the problem of how to reduce these costs.…”

Section: Physical Definition Of Solar Radiationmentioning

confidence: 95%

“…The uniformity of daylight can be influenced by certain factors, such as the height of the room, bright paint, and the use of light-scattering materials like curtains and glass. The evenness of daylight is also influenced by the position of the windows (a higher location is preferable) and the color of the shading objects (the lighter the better) [32].…”

Section: Quantitative and Qualitative Level Of Daylightmentioning

confidence: 99%

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Illumination of Interior Spaces through Structures Made of Unified Slabs of High-Performance Light-Transmitting Concrete with Embedded Optical Fibers

2023

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Light-transmitting concrete as a building material already exists in many forms, but its light properties and the possibilities of using it to improve the lighting of interior spaces have not been investigated in detail yet. This paper focuses on the illumination of interior spaces using constructions made of light-transmitting concrete, which will allow light to pass between individual spaces. The experimental measurements carried out are divided into two typical situations using reduced room models. The first part of the paper focuses on the illumination of the room through the penetration of daylight through the ceiling made of light-transmitting concrete. The second part of the paper investigates the transmission of artificial light from one room to another through a non-load-bearing dividing structure composed of unified slabs of light-transmitting concrete. For the experiments, several models and samples were created for comparison. The first step of the experiment was to create slabs of light-transmitting concrete. While there are many options to produce such a slab, the best option is to use high-performance concrete with glass-fiber reinforcement, which improves the load transfer properties, and plastic optical fibers for light transmission. By adding optical fibers, we can achieve the transmission of light between any two spaces. For both of the experiments, we used reduced-scale models of rooms. Slabs with dimensions of 250 × 250 × 20 mm and 250 × 250 × 30 mm were used in three versions: concrete slabs with optical fibers, concrete slabs with air holes and solid slabs. The experiment measured and compared the level of illumination at several points in the model as it passed through each of the three different slabs. Based on the results of these experiments, it was concluded that the interior level of illumination of any space can be improved by using light-transmitting concrete, especially those without access to natural light. The experiment also assessed the strength properties of the slabs in relation to their intended use and compares them with the properties of stone slabs used as cladding.

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Section: Physical Definition Of Solar Radiationmentioning

confidence: 95%

Section: Quantitative and Qualitative Level Of Daylightmentioning

confidence: 99%

Illumination of Interior Spaces through Structures Made of Unified Slabs of High-Performance Light-Transmitting Concrete with Embedded Optical Fibers

2023

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“…The epoxy resins enhance compressive strength in small doses while increasing translucence and rationalizing energy expenditure [21]. A detailed analysis of the thermal behavior of light-transmitting concrete indicates how thermal transmittance has an insignificant impact on the air-conditioning costs and proving the efficiency of the material as an insulator [22].…”

Section: Introductionmentioning

confidence: 99%

Annual Transmittance Behavior of Light-Transmitting Concrete with Optical Fiber Bundles

Shenoy,

Nayak,

Tantri

et al. 2023

Materials

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This study characterizes the transmittance behavior of structural light-transmitting concrete under natural sunlight. The experimentation involves the use of a novel test setup and a detailed analysis considering the variation and dependence on time of day, month of the year and seasonal variations. The test set consisted of 28 variations of fiber configurations, with two different diameters, spacing and bundling techniques used to increase the area of fibers while maintaining spacing to aid the placing of concrete without compromising on transmittance. The study provides a real-time observational understanding of the behavior of light-transmitting concrete, a result usually obtained by modelling and simulation. The statistical analysis helps in understanding the impact of various variables as well as their interrelationships, which can help in design optimization. Based on the behavior as well as the stipulations of standards, the applicability of the material to various structural applications has been identified.

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“…Aggregate is a predominant material that is used on a vast scale in the construction industry. Due to the better durability of igneous rock-based aggregates, granite and basalt are most preferred and utilized in the construction industry to date [17][18][19]. In India, aggregate flow analysis revealed that 99% of the produced stone is utilized in concrete, and its demand is about 1.089 billion tonnes per annum [17,20].…”

Section: Introductionmentioning

confidence: 99%

Implementation assessment of calcined and uncalcined cashew nut-shell ash with total recycled concrete aggregate in self-compacting concrete employing Bailey grading technique

Tantri

Nayak

Shenoy

et al. 2022

Innov. Infrastruct. Solut.

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The present study concentrates on the performance evaluation of calcined and uncalcined cashew nut-shell ash (UCCNA and CCNA) with treated total recycled concrete aggregate (TRCA) in self-compacting concrete. The achievement of sustainable self-compacting concrete (SCC) is possible by the implication of four stages, which includes TRCA treatment process, gradation selection process through Bailey aggregate grading technique, by considering TRCA replacement percentage with an increment of 25% and up to 100% and by considering UCCNA or CCNA replacement with an increment of 5% and up to 20%. Hardened and fresh properties of SCC have been performed and analyzed based on the compliance requirements of SCC. In addition finding results through microstructure assessment was in line with the findings of the hardened and fresh properties of SCC. In addition, quality and dynamic instability assessments of SCC were analyzed through ultrasonic pulse velocity and drying shrinkage aspects. Besides CO2, the emission rate and the efficiency rate of SCC, composites were analyzed in detail. Overall findings revealed that CCNA-based SCC mixes performed effectively than UCCNA-based SCC; specifically, incorporation of 75% of TRCA with 15% CCNA was found to be optimal. But with regard to shrinkage performance UCCNA found to be better by imputing less shrinkage compared to CCNA-based SCC mixes. Further with regard to efficiency rate of SCC composites revealed the gain of maximum efficiency of about 0.156 MPa/kg CO2/m3 and 0.160 MPa/kg CO2/m3 for 15% and 20% CCNA-based SCC mixes.

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Thermal transmission characteristics of plastic optical fibre embedded light transmitting concrete

Cited by 8 publications

References 34 publications

Illumination of Interior Spaces through Structures Made of Unified Slabs of High-Performance Light-Transmitting Concrete with Embedded Optical Fibers

Illumination of Interior Spaces through Structures Made of Unified Slabs of High-Performance Light-Transmitting Concrete with Embedded Optical Fibers

Annual Transmittance Behavior of Light-Transmitting Concrete with Optical Fiber Bundles

Implementation assessment of calcined and uncalcined cashew nut-shell ash with total recycled concrete aggregate in self-compacting concrete employing Bailey grading technique

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