WEBVTT

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(upbeat music)

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(gentle music)

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- We're here at Treat Island today,

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because we brought some concrete,

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that we poured in
subfreezing temperatures.

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And we're gonna see how the
long term durability looks

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when it's in this natural
weathering exposure site

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at Treat Island.

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So, here at Treat Island, it's salt water,

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freezing temperatures, things like that.

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So we're gonna see how our
concrete holds up over time.

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We brought both, bars and cylinders today,

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so we're gonna be measuring

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the length change of the bars
over time, as the years go by.

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And then, we brought cylinders,

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so we can see how the strength
changes over time as well.

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This experiment could
last for 10, 20 years

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until our samples either
degrade or hold up over time.

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So we're basically just
here to put some stuff out

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and to see how things go
over the next few years.

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(upbeat music)