Which material risk increased in Mughal-era water gardens, especially during summer monsoons when the system delivered sediment-rich water?

💡 Explanation

Pietra dura spalling increases because mineral impurities deposited in micro-cracks drive expansion via capillary action during wet/dry cycles; this is a form of frost weathering, therefore spalling accelerates rather than erosion of the mortar. High evaporation or algal blooms affect other parts.

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