Important Tests on Newly Constructed Roads and Highways
                     Important Tests on Newly 
Constructed Roads and 
Highways
Ensuring Quality, Safety & 
Longevity
Why Road Testing is 
Important
◦Guarantees durability and long-term performance
◦ Prevents premature failures and accidents
◦ Ensures compliance with design and safety standards
◦Mandatory for roads and highway testing in India
Falling Weight Deflectometer 
(FWD)
◦Purpose: Tests structural strength of 
pavement
◦Working: Simulates vehicle load by 
dropping weight
◦Application: Identifies weak spots, 
used for overlay design
Benkelman Beam Deflection 
Test
◦Purpose: Measures rebound 
deflection in flexible pavements
◦Working: Beam with dial gauge 
placed under standard truck
◦Application: Common for overlay 
design and flexible roads
Bump Integrator Test
◦Purpose: Assesses riding quality 
and surface roughness
◦Working: Vehicle-mounted device 
records vertical movement
◦Application: Used to calculate 
International Roughness Index (IRI)
Skid Resistance Test
• Purpose: Ensures road friction 
to prevent skidding
• Working: British Pendulum 
Tester measures energy loss
• Application: Important at 
curves, slopes, toll zones
Retroreflectivity Test
• Purpose: Tests visibility of road 
markings and signs
• Working: Retroreflectometer 
measures light reflected to driver
• Application: Critical for night-time 
driving safety
Retroreflectivity Test
• Purpose: Non-destructive 
pavement analysis
• Working: Radar signals detect 
thickness, voids, and defects
• Application: Used in expressways 
and rapid assessments
Core Cutting Test
• Purpose: Verifies thickness and 
sequence of bitumen layers
• Working: Core sample extracted 
using coring machine
• Application: Confirms 
construction as per design
Field Density & Compaction Test
• Purpose: Ensures proper 
compaction of subgrade & 
pavement
• Working: Sand cone or nuclear 
gauge methods
• Application: Prevents settlement 
and structural failure
Dynamic Cone Penetration Test
• Purpose: Assesses soil and base 
layer strength
• Working: Cone rod driven by 
hammer; penetration recorded
• Application: Portable and 
effective for rural sites
Weigh-in-Motion (WIM) System
• Purpose: Monitors vehicle loads 
without stopping traffic
• Working: Sensors embedded in 
road capture axle weights
• Application: Prevents overloading 
and road damage
Other Supporting Tests
• Rumble Strip effectiveness
• Bridge Joint testing
• Drainage evaluation
• Slope stability (for hilly terrain)
Conclusion
• Quality testing is essential for long-lasting 
roads
• Enhances user safety and comfort
• Mandatory for all major road projects in 
India
• Ensures roads are ready for heavy, long-
term use
For more info. contact
Aimil Ltd.
A-8, Mohan Co-operative Industrial Estate 
Mathura Road, New Delhi - 110044
[email protected]
01161310200
https://www.aimil.com