@article{ref1,
title="Assessing performance of glow-in-the-dark concrete",
journal="Transportation research record",
year="2015",
author="Wiese, Andrew and Washington, Taylor and Tao, Bernard and Weiss, W. Jason",
volume="2508",
number="",
pages="31-38",
abstract="The objective of this research was to develop a soy-based luminescent sealant for use on concrete surfaces. The luminescent sealant was a mixture of soy methyl ester polystyrene and strontium aluminate, a phosphorescent powder that slowly luminesces after being excited by light. A test procedure was developed to quantify the magnitude and duration of the luminance of the coated concrete surface; quantifying the luminance was key in evaluating the performance of the luminescent sealant. The luminescent sealant was excited in a consistent manner with a xenon lighting system that simulated sunlight, a photometer (light-measuring instrument) that measured the luminance of the excited concrete surface, and a housing unit that prevented extraneous light from the surroundings from influencing the test results. <br><br>RESULTS of the tests indicated that the luminescent surface emitted light (i.e., glowed) for approximately 24 h in a dark space after it was excited. Larger particles of strontium aluminate were found to luminesce for a longer time than did smaller particles. The excited sealant's luminance was independent of the amount of time it was exposed to light coming from the xenon lighting system.<p />",
language="en",
issn="0361-1981",
doi="10.3141/2508-04",
url="http://dx.doi.org/10.3141/2508-04"
}