Which mechanism explains how Roman concrete resisted cracking over centuries despite temperature changes?

💡 Explanation

When exposed to water, pozzolanic materials in Roman concrete undergo a reaction, forming calcium-silicate-hydrate (CSH) binding the mixture and preventing crack propagation. Therefore robust hydrates formation results, rather than iron reinforcement, air entrainment, or pre-stressing needing distinct manufacturing processes.

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• Which navigational error increased when using a damaged 18th-century sextant with a warped frame?
• Which process historically weakened early Mesopotamian bronze agricultural tools when over-heated during manufacture?
• Which mechanism enabled Ibn al-Haytham to accurately model imaging within the human eye around 1000 AD?
• Which outcome results from continuous maize cultivation on steeply terraced hillsides lacking adequate drainage?
• Which risk was amplified in ancient Mesopotamia when arsenic impurities diffused intergranularly within cast bronze tools?