	US 12,241,017 B2
	High durability engineered cementitious composites with polymer fibers
Mohammed Al Mehthel, Dhahran (SA); Victor Li, Ann Arbor, MI (US); He Zhu, Ann Arbor, MI (US); Thibault Villette, Khobar (SA); Waleed Nasser, Ad Dammam (SA); and Oscar Salazar Vidal, Dhahran (SA)
Assigned to SAUDI ARABIAN OIL COMPANY, Dhahran (SA); and University of Michigan, Ann Arbor, MI (US)
Filed by SAUDI ARABIAN OIL COMPANY, Dhahran (SA); and University of Michigan, Ann Arbor, MI (US)
Filed on Oct. 13, 2022, as Appl. No. 18/046,259.
Prior Publication US 2024/0132770 A1, Apr. 25, 2024
Int. Cl. C09K 8/467 (2006.01); C04B 7/32 (2006.01); C04B 14/06 (2006.01); C04B 16/06 (2006.01); C04B 18/14 (2006.01); C04B 18/22 (2006.01); C04B 28/06 (2006.01)

CPC C09K 8/467 (2013.01) [C04B 7/323 (2013.01); C04B 14/068 (2013.01); C04B 16/0633 (2013.01); C04B 18/146 (2013.01); C04B 18/22 (2013.01); C04B 28/065 (2013.01)]

15 Claims

1. An engineered cementitious composite (ECC) comprising:

a cement precursor;

unprocessed desert sand from at least two distinct native environments having an average particle size ranging from 200 to 600 micrometers (μm), each native environment having unprocessed desert sand of a different average particle size; and

ultra-high molecular weight polyethylene fibers and polypropylene fibers,

wherein the ultra-high molecular weight polyethylene fibers and polypropylene fibers are included in a ratio ranging from 10:1 to 1:10, and

wherein the ECC has a tensile strain capacity ranging from 8.6 to 12.5%.