A. particle size composition
B. plasticity characteristics
C. both particle size composition and plasticity characteristics
D. none of the above
Answer: Option C
This Question Belongs to Civil Engineering >> Soil Mechanics And Foundation
A. 3 months
B. 6 months
C. 12 months
D. 24 months
A. directly proportional to time and inversely proportional to drainage path
B. directly proportional to time and inversely proportional to square of drainage path
C. directly proportional to drainage path and inversely proportional to time
D. directly proportional to square of drainage path and inversely proportional to time
The Highway Research Board (HRB) classification, also known as the AASHTO (American Association of State Highway and Transportation Officials) classification system, is based on both particle size composition and plasticity characteristics. This system classifies soils according to their suitability for use in highway subgrades, with a focus on their gradation (particle size distribution) and Atterberg limits (plasticity characteristics).