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How do expansion joints in a sidewalk keep the concrete from cracking?
The expansion joint in a sidewalk keeps the concrete from cracking just as what its called. It allows the concrete to expand when heated and contract when cold. Without the joint, the concrete will crack and become uneven or mountain up.
Does concrete expand when heated?
Yes , just the same as steel - otherwise the rebar would crack structures !
Does concrete expand on hot days?
A little bit, but not much. If it is really hot, and then really cold, then your cement will crack.
Why are some roads asphalt and some concrete?
Asphalt is used because primarily because it is cheaper than concrete. Asphalt is also more pliable, and can expand and contract in changing weather. Concrete, however, cannot expand or contract as well, so gaps are placed periodically to ease this tension or compression. Also Asphalt creates less noise than Concrete. it helps me walk better on da ground yasss very much
How would temperature affect bridges?
the metal or concrete might expand if it gets too hot and compress when it gets too cold.
What material allows concrete sections to expand on bridges?
Material such as wood allow the concrete to expand
How tar is useful in concrete roads?
Because the concrete will expand and the tar will become soft. So the concrete has room to expand. With out cracking.
Is tar useful in concrete roads?
Because the concrete will expand and the tar will become soft. So the concrete has room to expand. With out cracking.
Why does London bridge not expand?
It is a concrete bridge so has no need to expand.
Does it expand and contract Even after concrete is dry?
No. Concrete never gets any bigger than the day it is poured.
How do expansion joints in a sidewalk keep the concrete from cracking?
The expansion joint in a sidewalk keeps the concrete from cracking just as what its called. It allows the concrete to expand when heated and contract when cold. Without the joint, the concrete will crack and become uneven or mountain up.
Why do concrete patios crack?
A concrete patio usually cracks due to heat cold. If it is to cold it contract and break. If it is to hot it will expand and break. Then water can seep into those cracks and freeze causing the crack to expand
When temperature rises what will happen to the gaps between the concrete sections?
when the tempreture rises the gaps between the concrete pavement will expand because of the heat.
Why concrete roads have gaps?
because it expands and contracts depending on the temperature..the gaps allow the concrete some space to expand so that it will not crack..
When the temperature rises what will happen to the gaps between the concrete sections?
when the tempreture rises the gaps between the concrete pavement will expand because of the heat.
Is it possible to expand the size of a concrete slab foundation and if so how is it done ie we are knocking down existing house and want to expand the floorplan?
Expand the following: 3 ( 2x +5 )
Why do concrete slabs have space between them?
Those are expansion joints. During the changing seasons with varying temperatures, the slabs expand and contract. The spaces allow the slabs to expand without cracking the concrete.
