Daylighting performance simulation and analysis of translucent concrete building envelopes

Su, Xiaosong; Zhang, Ling; Liu, Zhongbing; Luo, Yongqiang; Lian, Jinbu; Liang, Ping

doi:10.1016/j.renene.2020.03.041

Cited by 26 publications

(10 citation statements)

References 25 publications

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“…The numerical aperture (NA) is an important characteristic for optical fibres since it determines the acceptance angle that light may travel through, according to Su et al [42]. They conclude that a large NA has led to increased light transmission, but it has also resulted in excessive daylighting.…”

Section: Optical Fibres Derived From Translucent Materials For Ltc Productionmentioning

confidence: 99%

“…This reduction was found in the range of 6% to 20%. Furthermore, Juan and Zhi [2] have studied experimentally and numerically the properties of light-transmittance and mechanical, as well as the thermal performance of a novel kind of resin translucent mortar-based concrete [42]. The research pointed out that LTC has 0.38 W/(mk) thermal conductivity, which is 60% lower than the standard concrete of 0.89 W/(mk).…”

Section: Thermal and Energy-saving Propertiesmentioning

confidence: 99%

“…Su et al [42] Light transport properties are more influenced by fibre volumetric fraction than numerical aperture.…”

Section: Microstructure Performancementioning

confidence: 99%

See 2 more Smart Citations

Light Transmitting Concrete: A Review

Luhar,

Savva

et al. 2021

Buildings

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Recently, research attention has been drawn to the application of novel, unique, and innovative types of construction materials to fulfil diverse objectives associated with the ground-breaking concept of “Greener Architecture”, in order to improve the overall economic value and quality of construction. Among these revolutionary structural building materials is light-transmitting concrete, also referred to as translucent or transparent concrete. This material is based on the concept of nano-optics, which allows exterior light to transmit through internal spaces in which light elements, namely optical fibres, are incorporated during the material’s manufacture. The current review assesses earlier studies of translucent concrete, focusing on its applications, and the appropriate ratio and arrangement pattern of optical fibres. This study also investigated the light-transmitting, mechanical, thermal, and energy-saving properties of translucent concrete by analysing research conducted during the past decade. However, numerous material restrictions and research gaps were found in the earlier literature on this concrete. The principal restrictions relate to the material’s low material strength and the identification of the optimum ratio of fibres. The main gaps identified among the reviewed research investigations relate to tests aiming to identify the influence of dissimilar ratios of optical fibres on the material’s strength and energy-saving properties. In the current review, we also identify and recommend future areas of research, and provide suggestions to address the existing research gaps. Finally, we review the types of translucent materials, their properties, and their advantages and disadvantages, and provide illustrations and value-added applications. The aim is to promote translucent concrete as an attractive, promising, and innovative building material for the construction industry.

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Section: Optical Fibres Derived From Translucent Materials For Ltc Productionmentioning

confidence: 99%

Section: Thermal and Energy-saving Propertiesmentioning

confidence: 99%

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Light Transmitting Concrete: A Review

Luhar,

Savva

et al. 2021

Buildings

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“…Nevertheless, it is possible to change concrete from opaque to translucent by combining optical fibers with a concrete matrix [7]. Translucent concrete (TC) is a new energy-efficient building material that transmits light into the indoor environment via embedded optical fibers [5,8,9], which provides new insights into the interior design of buildings and decorative architecture [10]. TC not only improves the lighting of the building and reduces energy consumption for lighting, but also changes the traditional pattern of dense, dark, and bulky monotonous building walls, making the building aesthetically pleasing and decorative [11].…”

Section: Introductionmentioning

confidence: 99%

Mechanical, light transmittance properties and simulation study of sustainable translucent lightweight aggregate concrete

Lian¹,

Yin²

2022

Mater. Res. Express

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To investigate the engineering feasibility of translucent lightweight aggregate concrete (TLAC) in sustainable buildings, this paper focuses on testing the light transmission properties and mechanical performance of TLACs, the light transmission effect in building interiors is simulated and evaluated using automated steps seamlessly integrated with REVIT software and Radiance software. The preparation process of TLACs and the mixture proportions of raw materials were designed by combining translucent concrete technology with self-compacting mortar. The results indicate that the light transmission of TLAC increases with the volume of polymethylmethacrylate optical fiber (POF) incorporated and the diameter of POF, while the compressive strength tends to increase first and then decrease with the increasing volume fraction of POF in the TLAC samples. Moreover, the building lighting simulations show that indoor illuminance will improve significantly with the use of TLACs, which further illustrates the energy savings and structural performance improvements owing to the application of TLAC as a modern construction material.

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“…Первое смешивание таких элементов произведено уже в 2001 г. Полученный бетон спустя два года [5,6] официально стали называть полупрозрачным, а еще через пару лет инновационный материал смог пропускать уже до 80 % света. Сочетая в себе легкость и полупрозрачность, новый бетон [7] оказался весьма интересным для использования [8,9]. Его предлагали применять в качестве легких стеновых конструкций, где создавалось впечатление отсутствия толщины и веса.…”

Section: Introductionunclassified

Investigation of the properties of translucent concrete

Siyanov

Yaroshevich

2022

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Translucent concrete is an alternative material for many building structures. Having a sufficiently high strength, it has minimal values of density, porosity and water resistance, which allows it to be used in the construction of light road surfaces. Modern technologies make it possible to improve the quality of the material and obtain inexpensive concrete with a high ability to transmit light. Promising developments are designed to improve the technical characteristics of concrete and minimize the cost of obtaining it. The aim of the work was to study concrete using affordable and relatively inexpensive plexiglass. Within the framework of the work, a method of light transmission at different angles is proposed and concrete trends are revealed depending on the content of transparent elements. The stages of obtaining samples with specified parameters are determined and the structure of their light tests is developed. The levels at which the main changes occur are shown. Based on the conducted research, the properties of concrete were identified and analyzed. The dependence between the volume distribution and the contribution of plexiglass components to the overall light effect is established. The characteristic parameters of light permeability, density and strength are determined. The practical benefit of the study lies in the fact that it takes into account the need to change the angles of light transmission in accordance with the requirements of architecture and determines the influence of plexiglass on the properties of samples. Thanks to the inclusion of a cheap transparent polymer in the composition of concrete, performance indicators were significantly increased and a material with a lower volume mass was obtained. Such concrete, subject to the correct manufacturing technology, has the prospect of mass use in construction.

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Daylighting performance simulation and analysis of translucent concrete building envelopes

Cited by 26 publications

References 25 publications

Light Transmitting Concrete: A Review

Light Transmitting Concrete: A Review

Mechanical, light transmittance properties and simulation study of sustainable translucent lightweight aggregate concrete

Investigation of the properties of translucent concrete

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