In 2015, Swiss scientists successfully identified the aqueous crystal that triggers swelling and cracking in structural concrete. Their research looks to better understand the alkali-aggregate reaction (AAR) detrimental to concrete structures like dam walls and bridges exposed to outside elements.
Scientists are using synchroton radiation, electromagnetic radiation emitted when charged particles are accelerate radially, to study the source of the reaction products of AAR, and computer simulations to view the impact swelling has on structures, among other methods. This work is expected to reveal ways to avoid the damaging reaction, which will help reduce costs from additional repairs.
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