Which risk increased significantly when Roman concrete masonry techniques declined?

💡 Explanation

Without the pozzolanic reaction forming strong cementitious bonds, aqueducts experienced greater instability, therefore structural collapse became more frequent, rather than the alternatives, because the composition dictated longevity via hydraulic cement hardening.

• Which outcome results from depleted hydraulic head at Aztec chinampa systems?
• Which data loss arises when Inca quipu deteriorates?
• Which outcome occurred during early Song Dynasty iron production, due to limitations in control?
• Which consequence resulted when ancient Cusco's fit with clay mortar failed?
• Which systematic error develops when repeated solar altitude sightings are observed towards the horizon using an astrolabe?
• Which outcome arose when Roman road construction exceeded specified aggregate depth?