Patent ID: 11970288
Assignee: EARTHSTONE INTERNATIONAL LLC
Field: Civil engineering (Other fields)
Classification: CPC B  C  E | IPC B  C  E

Claim 0:
1. A method of slowing an aircraft overrunning a runway, comprising:
a) covering an area adjacent a runway with irregular, open porosity foamed glass bodies having 10 mm to 80 mm to define a loose aggregate bed;
b) pouring liquid cement over the loose aggregate bed;
c) curing the liquid cement to define a top cement layer;
d) crushing at least a portion of the loose aggregate bed with an oncoming aircraft;
wherein the loose aggregate bed is at least 85 volume percent foamed glass bodies;
wherein during step d) the foamed glass bodies crush and break up before slip failure occurs;
wherein the loose aggregate bed has a crushing failure mode;
wherein during step d) the aircraft is slowed.