Which statement below is true about lime-based pointing's elasticity?

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Multiple Choice

Which statement below is true about lime-based pointing's elasticity?

Explanation:
Lime-based pointing stays elastic because lime mortars cure slowly by carbonation and retain a flexible, porous structure. This inherent flexibility lets the joint absorb tiny movements from settlement, thermal expansion, and moisture changes typical in historic masonry, which helps prevent cracking. It doesn’t become completely rigid right after installation, nor does it lose elasticity as it cures, and it’s actually more flexible than cement-based pointing. That combination of breathability and pliability is why lime-based pointing remains elastic to accommodate movement in historic masonry.

Lime-based pointing stays elastic because lime mortars cure slowly by carbonation and retain a flexible, porous structure. This inherent flexibility lets the joint absorb tiny movements from settlement, thermal expansion, and moisture changes typical in historic masonry, which helps prevent cracking. It doesn’t become completely rigid right after installation, nor does it lose elasticity as it cures, and it’s actually more flexible than cement-based pointing. That combination of breathability and pliability is why lime-based pointing remains elastic to accommodate movement in historic masonry.

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