Question:
Which one of the following pairs is not correctly matched?
Which one of the following pairs is not correctly matched?
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Remember:
• Los Angeles Test $\rightarrow$ Abrasion resistance of aggregates.
• Soundness Test $\rightarrow$ Weathering resistance of aggregates.
• Penetration Test $\rightarrow$ Bitumen hardness.
• Los Angeles Test $\rightarrow$ Abrasion resistance of aggregates.
• Soundness Test $\rightarrow$ Weathering resistance of aggregates.
• Penetration Test $\rightarrow$ Bitumen hardness.
Updated On: Jul 23, 2026
- Horizontal curves -- Super elevation
- O and D studies -- Desire lines
- Los Angeles test -- Hardness of aggregates
- Soundness Test -- Purity of Bitumen
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The Correct Option is D
Solution and Explanation
Concept:
Different engineering tests are conducted for different materials and purposes.
• Horizontal curves require super elevation to counteract centrifugal force.
• Origin and Destination (O--D) studies are represented using desire lines.
• Los Angeles abrasion test determines the hardness and abrasion resistance of aggregates.
• Soundness test is performed on aggregates to determine their resistance to weathering, not the purity of bitumen.
Step 1: Examine each pair. Statements (A), (B), and (C) are correctly matched. Statement (D) is incorrect because the soundness test is associated with aggregates rather than bitumen.
Step 2: Identify the incorrect pair. Hence, \[ \boxed{\text{Soundness Test -- Purity of Bitumen is not correctly matched}.} \] Therefore, the correct option is \[ \boxed{(D).} \]
• Horizontal curves require super elevation to counteract centrifugal force.
• Origin and Destination (O--D) studies are represented using desire lines.
• Los Angeles abrasion test determines the hardness and abrasion resistance of aggregates.
• Soundness test is performed on aggregates to determine their resistance to weathering, not the purity of bitumen.
Step 1: Examine each pair. Statements (A), (B), and (C) are correctly matched. Statement (D) is incorrect because the soundness test is associated with aggregates rather than bitumen.
Step 2: Identify the incorrect pair. Hence, \[ \boxed{\text{Soundness Test -- Purity of Bitumen is not correctly matched}.} \] Therefore, the correct option is \[ \boxed{(D).} \]
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