	US 11,981,608 B2
	Luminescent concrete product
Muhammad Saleem, Dammam (SA); and Nawaf Isam Ahmed Blaisi, Dammam (SA)
Assigned to Imam Abdulrahman Bin Faisal University, Dammam (SA)
Filed by Imam Abdulrahman Bin Faisal University, Dammam (SA)
Filed on Mar. 15, 2023, as Appl. No. 18/121,693.
Application 18/048,466 is a division of application No. 17/513,223, filed on Oct. 28, 2021, granted, now 11,512,027, issued on Nov. 29, 2022.
Application 17/513,223 is a division of application No. 16/151,994, filed on Oct. 4, 2018, granted, now 11,186,524, issued on Nov. 30, 2021.
Application 18/121,693 is a continuation of application No. 18/048,466, filed on Oct. 21, 2022, granted, now 11,661,381.
Prior Publication US 2023/0265020 A1, Aug. 24, 2023
Int. Cl. C04B 41/50 (2006.01); C04B 14/06 (2006.01); C04B 14/30 (2006.01); C04B 28/04 (2006.01); C04B 41/00 (2006.01); C04B 41/68 (2006.01); C04B 103/54 (2006.01); C04B 111/00 (2006.01); C04B 111/80 (2006.01); C09K 11/02 (2006.01); C09K 11/77 (2006.01)

CPC C04B 41/5098 (2013.01) [C04B 14/06 (2013.01); C04B 14/303 (2013.01); C04B 28/04 (2013.01); C04B 41/009 (2013.01); C04B 41/68 (2013.01); C09K 11/02 (2013.01); C09K 11/77 (2013.01); C04B 2103/54 (2013.01); C04B 2111/00508 (2013.01); C04B 2111/807 (2013.01)]

11 Claims

1. A glow-in-the-dark concrete block, comprising:

a surface layer comprising a cured luminescent concrete; and

a base concrete block,

wherein the cured luminescent concrete comprises:

a cement;

a fine aggregate comprising sand; and

phosphorescent aluminate particles,

wherein a weight ratio of the phosphorescent aluminate particles to the fine aggregate is in the range of 1:2 to 1:20; and

wherein the cured luminescent concrete has an intensity of glow of 2-15 candelas per square meter for a period of 0.1-10 hours upon excitation with sun light for 2-20 minutes; and

wherein at least a portion of a surface of the base concrete block is coated by the surface layer, and

wherein the surface layer has a skid resistance value of 100-150.