Lime, Not Locked-In Cement
Cement mortars trap moisture and salt, hastening stone decay. NHL or hot-mixed lime mortars flex gently, self-heal microcracks, and let bridges breathe across seasons. Mock up sample mixes using local sand to match color and texture, and pre-wet joints to prevent flash drying. Cure slowly with damp hessian on sunlit days. The tactile ritual—buttering, compacting, finishing—becomes a classroom where neighbors learn materials science by feel, and the bridge trades brittle rigidity for forgiving resilience suited to rising, falling, freezing streams.