US 12,129,213 B1
Decorative glow-in-the-dark concrete block
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 Jul. 10, 2024, as Appl. No. 18/768,215.
Application 18/048,466 is a division of application No. 17/513,223, filed on Oct. 28, 2021, granted, now 11,512,027.
Application 17/513,223 is a division of application No. 16/151,994, filed on Oct. 4, 2018, granted, now 11,186,524.
Application 18/768,215 is a continuation of application No. 18/623,346, filed on Apr. 1, 2024, granted, now 12,060,306.
Application 18/623,346 is a continuation of application No. 18/121,693, filed on Mar. 15, 2023, granted, now 11,981,608.
Application 18/121,693 is a continuation of application No. 18/048,466, filed on Oct. 21, 2022, granted, now 11,661,381.
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)] 9 Claims
OG exemplary drawing
 
1. A decorative glow-in-the-dark concrete block, comprising:
a base concrete block having a rectangle cuboid shape, and
a cured luminescent concrete layer;
wherein the cured luminescent concrete layer comprises a cured luminescent concrete and has a skid resistance value of 100-150, and wherein the cured luminescent concrete layer has a thickness of 5-20 mm, and a thickness ratio of the cured luminescent concrete layer to the base concrete block is in the range of 0.02:1 to 0.2:1;
wherein at least a portion of a surface a single side of the base concrete block is coated with the cured luminescent concrete; and
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;
wherein the cured luminescent concrete layer 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 the phosphorescent aluminate particles are present only in the cured luminescent concrete.