Glow in The Dark Concrete

Glow in the dark concrete took the stage with new research in self-consolidating concrete, portland cement/limestone blends, and recycled concrete aggregates in ready mixed concrete, and it’s all illuminating the future of cast-in-place.

Andrew Weiss of Purdue University, Dr. Taylor Washington, Dr. Bernard Tao and Dr. Jason Weiss stated in their 2015 TRB paper “Assessing glow in the dark Concrete” that concrete pavements can emit light and improve safety.

The authors say that in addition to creating more durable pavements, a luminous “Glow in the Dark” (GITD) sealant that can be applied to the concrete surface has an important safety advantage and adds: “glow in the dark sealant can be used for sealing and increased use. Lifetime concrete supplements streetlights, and increases the safety of passengers at night. If successful, GITD sealants can be used to improve the safety of the construction area or may replace streetlights in certain applications.”

One such application includes nature reserves. Light pollution may interfere with local wildlife, but pedestrians need to see where they are walking. Since the Glow in The Dark powder obtains its luminescence characteristics from sunlight, it is more efficient than the light emitted by the street lamp. It can emit light in all directions, cover it, and consume about 2.3% of the world’s electricity consumption.

Wiese, Washington, Tao, and Weiss write that drivers can see roads, edges, or important features more clearly, so road safety can be improved by using glow in the black sealant. They said: “Roads, sidewalks, building walls, and wharves can only provide other potential applications for GITB sealants.” “Using glow in the dark concrete sealants, by reducing or replacing street lights, placing light in desired locations, sealing concrete More durable roads and increased public safety to reduce energy consumption.”

Researchers have developed a soy-based glow in the dark sealant for concrete surfaces. The sealant is a mixture of soy methyl ester polystyrene (SME-PS) and strontium aluminate, a glow in the dark powder that slowly glows after being excited by light. Test procedures were developed to quantify the magnitude and duration of the surface brightness of the coated concrete. The luminous sealant is a kind of xenon illumination system that simulates sunlight, a photometer that measures the brightness of the concrete surface and a shell unit that prevents the ambient light from affecting the test results.

“The results of the tests showed that the luminescent surface emits light for approximately 24 hours (ie, luminescence) after being excited in a dark space,” reports Wiese, Washington, Tao and Weiss. “It has been found that larger particles of barium aluminate emit longer particles than the others.”

In addition to light, SME-PS also improves resistance to freezing and thawing by reducing the penetration of water into the concrete. The authors pointed out: “Compared with the average sample, rough testing showed that the salt intake decreased.” “Sample coated with SME-PS shows that the mass absorption of NaCl solution is reduced by about 50%, the quality of MgCl 2 solution Absorption is reduced by 25% and the mass absorption of CaCl 2 solution is reduced by 20% without cracking.The ability to combine luminescence with durability enhancement can provide sealants with multiple functions.”

Articles from concreteproducts.com Written by Tom Kuennen