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Physics Homework Help?

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A concrete highway is built of slabs 11 m long (15 ∘C).

How wide should the expansion cracks between the slabs be (at 15 ∘C) to prevent buckling if the range of temperature is -30∘C to +48 ∘C?
asked Nov 29, 2015 in PHYSICS by anonymous

1 Answer

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The length of the concrete slab is 11m.

Expansion cracks between 15°C and 48°C.

Initial Temperature is 15°C

Final Temperature is 48°C

Coefficient of the linear expansion of concrete is image.

Change in length of the concrete slab is image.

image

Expansion in the length of concrete slab is 0.4356 cm.

answered Nov 30, 2015 by Lucy Mentor

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