North Carolina General Contractors Practice Exam

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Prepare for the North Carolina General Contractors Exam with comprehensive quizzes. Study using interactive flashcards and multiple-choice questions, including hints and detailed explanations. Get ready for your certification!

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Which type of lime is known for its hydraulic properties?

Type N
Type S
Type M
Type L

The correct answer is: Type M

Type M lime is recognized for its hydraulic properties, meaning it can set and harden in the presence of water. This characteristic makes it suitable for a variety of construction applications where moisture resistance is essential, such as in masonry and construction projects exposed to wet conditions. Hydraulic limes, such as Type M, contain a higher proportion of calcium silicates and aluminates, which react chemically with water to form compounds that contribute to strength and durability once cured. As a result, Type M lime is often chosen for projects where increased strength is required, along with the ability to resist the effects of moisture. In contrast, other types of lime, such as Type N and Type S, are generally non-hydraulic or have limited hydraulic properties, making them more suitable for applications that do not involve significant exposure to moisture or require rapid setting.