	US 12,351,514 B2
	Lightweight aggregates produced from waste-coal combustion ash
Mohammad Balapour, Philadelphia, PA (US); and Yaghoob Farnam, Philadelphia, PA (US)
Assigned to Drexel University, Philadelphia, PA (US)
Filed by Drexel University, Philadelphia, PA (US)
Filed on Apr. 26, 2022, as Appl. No. 17/729,039.
Application 17/729,039 is a continuation in part of application No. 17/469,945, filed on Sep. 9, 2021, granted, now 11,345,634, issued on May 31, 2022.
Application 17/469,945 is a continuation of application No. PCT/US2020/056976, filed on Oct. 23, 2020.
Claims priority of provisional application 63/326,937, filed on Apr. 4, 2022.
Claims priority of provisional application 63/004,032, filed on Apr. 2, 2020.
Prior Publication US 2023/0110778 A1, Apr. 13, 2023
Int. Cl. C04B 18/08 (2006.01); C04B 111/40 (2006.01)

CPC C04B 18/084 (2013.01) [C04B 2111/40 (2013.01)]

13 Claims

1. A lightweight aggregate comprised of a waste coal combustion ash, the lightweight aggregate comprising:

(a) a specific gravity between about 1.22 and about 1.45; and

(b) a normalized porosity of pores smaller than 50 nm between about 1.7% and about 11.5%.