Concrete Slab Research Paper

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2. At the atomic level, explain why a small gap is left between slabs of concrete on a footpath. At the atomic level, a small gap is left between slabs of concrete because on a hot day, the atoms that make up the concrete slab will get more energized due to the heat. When an atom gets energized, it starts moving faster and taking up more space. This causes the concrete slab to expand, until it closes gap. When the concrete slab starts cooling down, it will contract, leaving the gap opened once agian. If a gap was not created, during a hot day, the concrete slab will have no space for the exapnsion to happen without damage caused, and so, it will get damged and it can damage its surroundings. This process of the expanding and contracting concrete

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