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Lime is added to modern masonry mortars because:
Lime is added to modern masonry mortars because:Select one:
A. it increases strength.
B. it is cheaper than cement.
C. it is required for the cementitious reaction.
D. it adds color.
E. it improves workability
Final answer:Lime is added to modern masonry mortars to improve workability and facilitate the cementitious reaction, which is essential for strength development. The correct option is E.Explanation:Lime is added to modern masonry mortars because it improves workability, allowing for easier manipulation of the material during construction. Additionally, it is required for the cementitious reaction to take place, which is crucial for the mortar to harden and develop strength over time. The addition of lime to mortar is a key factor in its performance and durability in construction projects.The question asks why lime is added to modern masonry mortars. The correct answer is that it improves workability. Lime, when added to mortar, makes the mixture more plastic and easier to work with, allowing for smoother application and finishing. This enhanced workability does not compromise the mortar’s strength significantly but provides better handling characteristics during construction. While lime may have other minor benefits, such as minor cost differences or slight variations in color, its primary role in improving workability is most relevant to its use in modern masonry mortars.Lime's legacy in construction dates back to ancient times, notably with the Romans, who utilized lime extensively in their mortar mixtures for constructing enduring structures. The addition of substances such as volcanic sand further improved the properties of the mortar. Today, while the types of cement and applications have evolved, lime continues to play an essential role, particularly in masonry works where its addition aids in ease of application and achieving a refined finish....