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- Airfield damage repair is super exciting

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and important to me because we're helping

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the war fighter repair a runway

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and getting back to traffic within hours,

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rather than weeks or months,

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even in remote areas.

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My name is Lulu Edwards,

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I am a research engineer

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in the Geotechnical
Instructor's Laboratory.

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The name of our project

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is Structural Requirements
for Large Crater Repairs.

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The steps involved in doing
a rapid airfield repair

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are first we have to
saw-cut the damaged area,

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and once the area is saw-cut,

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we remove the damaged debris,

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and the concrete that is on top.

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Once the debris is removed,
we put a backfill in there.

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We've tested several backfills over time,

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we have several options to choose from.

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In this case, in our large crater repairs,

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we're testing global fill
and crushed limestone.

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And then once we have a backfill,

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we put in a rapid-setting cap.

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This is a rapid-setting concrete,

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that once it's set, after two hours,

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we're able to put aircraft traffic on it.

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We know that a certain repair can sustain

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so many passes, because we've tested it

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with a simulated load cart.

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And what we do is we monitor it,

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we measure the behavior
of the pavement over time.

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The ability to rapidly repair a runway

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within hours is amazing to me,

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and something that I didn't
even know was possible

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until I started working on this.