Which limitation drove Roman engineers to improve concrete?

💡 Explanation

The Romans utilized concrete with stone aggregate because the aggregate interlocking mechanism increased tensile strength; therefore, large spans were possible for structures such as the Pantheon rather than needing purely arch-based construction.

• Which degradation is accelerated in Byzantine mosaics exposed near coastal salt marshes?
• Which outcome reduces the Great Pyramid's long-term structural integrity given differential foundation settling?
• Which adjustment error in an 18th-century naval sextant causes consistently inaccurate altitude readings?
• Which consequence results when an early Roman aqueduct experienced significant settling?
• Which risk increases if a Roman aqueduct's settling tank's capacity is overwhelmed during intense rainfall?
• Which limitation increased in early warships when thicker hull timbers offered improved structural integrity?