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Title: Properties of Light-Transmitting Cementitious Materials

Author(s): Maohui Li, Youjun Lu, and Shaolin Yang

Publication: Materials Journal

Volume: 119

Issue: 1

Appears on pages(s): 39-45

Keywords: light-transmitting cementitious materials (LTCM); mechanical properties; optical properties; plastic optical fiber

DOI: 10.14359/51733147

Date: 1/1/2022

Abstract:
The light-transmitting cementitious materials (LTCM) in a homemade device were produced with plastic fiber-optics, luminescent powder, reflective powder, and cement. The mechanical strength of LTCM was greatly enhanced by the incorporation of optical fiber, luminescent powder, and reflective powder. The maximum increase of the 3-day, 7-day, and 28-day compressive strengths and 3-day flexural strength of the LTCM are 15.33, 19.05, 13.10, and 5.15 MPa, respectively. The optical test results show that the absorption rate increases slowly with the increasing wavelength in the visible light range, and the 7 × 7 fiber arrangement mode obtains the best average absorption rate up to 0.58%. The reflectivity rate reached the peak values of 40.9, 37.2, and 29.2% in the range of the green light wavelength with 5 × 5, 6 × 6, and 7 × 7 of the fiber meshes. The transmittance rate of concrete with 5 × 5, 6 × 6, and 7 × 7 jumps to 0.28, 0.82, and 2.0% at the wavelength of 400 nm and then remains stable with the increase of the wavelength.