The 'Marshall stability' test temperature of 60°C simulates:
Choose the correct answer
Average annual temperature of 20°C
Maximum summer pavement temperature (surface interior at ~60°C in India) — weakest condition for bituminous mix
Temperature during bitumen mixing at plant (160°C)
Frost temperature in cold regions
Correct Answer
B. Maximum summer pavement temperature (surface interior at ~60°C in India) — weakest condition for bituminous mix
Why is this the answer?
Marshall stability test (IS 2386 / ASTM D1559): cylindrical bituminous mix specimen tested in compression diametrically at 60°C. Temperature 60°C: represents maximum pavement surface temperature in Indian summer (road surface can reach 70–80°C; interior at 5–6 cm depth ≈ 60°C). At high temperature: bitumen softens → strength critical. Marshall stability: measures resistance to rutting at max service temperature. Mix design: minimum stability criteria (MORTH Table 500-11).
Related Transportation Engineering MCQs
More solved Transportation Engineering questions for AE/JE Civil Engineering exams.
- 'Road safety audits' (RSA) in India are conducted as per:
- The 'gauge' of a railway track in India (broad gauge) is:
- The 'saturation flow rate' at a signalised intersection is the flow that would cross...
- The 'PMGSY' (Pradhan Mantri Gram Sadak Yojana) standard road uses which pavement type?
- 'Pavement Management System' (PMS) in highways involves:
- 'Channelisation' at a traffic intersection improves safety by:
Practice more Civil Engineering questions
This MCQ belongs to JE Level Premium Test Series. Full tests include timed attempts, rank comparison and subject-wise analysis.