Abstract
<p>In recent years, light-transmitting cement-based materials (LTCM) have become important in the construction of green buildings because these reduce energy consumption for lighting. LTCMs were prepared by adding polymeric optical fibers (POFs) in a high strength self-compacting mortar (SCM). SCM was formulated from Portland cement, fine sand and water reducing admixture following the EFNARC criteria. LTCMs with a constant fiber content (5%) and three fiber diameter (0.75, 1 and 1.5 mm) were prepared by casting fresh SCM into a formwork designed ad hoc to keep the fibers fixed and aligned. Light transmitting performance of LTCM was tested by optical power measures. The effects of fiber diameter and distance between sample and detector on the optical power were evaluated. The compressive strength of hardened SCM reached a value of 69 MPa at an age of 28 days, while the LTCMs maintained sufficient strength for structural purposes. LTCMs are suitable to produce precast blocks and wall panels for application in building facades, signage and decorative art.</p>
Highlights
Green buildings are designed, built and operated in such a way that the impact on the environment is minimized
light-transmitting cement-based materials (LTCM) were prepared by adding polymeric optical fibers (POFs) in a high strength self-compacting mortar (SCM)
We study the effect of processing conditions on the mechanical and optical properties of LTCM based on polymeric optical fiber (POF) and a selfcompacting mortar (SCM)
Summary
Built and operated in such a way that the impact on the environment is minimized. The optical properties of LCTM depend on fiber type, diameter, volumetric fraction as well as particular spatial arrangement pattern By adjusting these parameters and mortar composition, different textures, colors and original optical effects can be achieved (Henriques et al, 2018; Li et al, 2015b; Yadav et al, 2018). To achieve the self-compacting condition, very low threshold stress values must be achieved without significant loss of viscosity in order to provide adequate segregation resistance (Faccin et al, 2017; Schiopetto & Stefani, 2015) In this way, the mortar can flow between the optical fibers without altering its spatial distribution in the matrix. We study the effect of processing conditions on the mechanical and optical properties of LTCM based on polymeric optical fiber (POF) and a selfcompacting mortar (SCM)
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