Comparison of roads made of paver blocks, RCC and bitumen
Pavers
Introduction
Concrete paver block roads are gaining popularity over bitumen and reinforced cement concrete (RCC) alternatives. This comparison examines which road type offers superior strength, durability and environmental friendliness.
Life expectancy
Both paver blocks and RCC roads last approximately 20 years, while bitumen roads have a shorter lifespan of 5 to 10 years.
Initial cost
RCC roads carry the highest initial expenses. Paver blocks fall in the middle range, and bitumen roads are the most economical option.
Construction time
Paver blocks require a medium construction duration with immediate usability. RCC necessitates 15 to 20 days of curing after construction. Bitumen roads complete fastest, allowing use within 1 to 2 days.
Rainwater drainage
Permeable pavers allow water to pass through to the base, thereby reducing pooling or flooding during heavy rain. Both RCC and bitumen surfaces remain impermeable, requiring proper slope and camber for drainage management.
Safety
Paver blocks and bitumen offer good skid resistance and traction. RCC surfaces are prone to slippage during rain or when spilled materials are present.
Surface cracks
Paver blocks resist cracking due to their small unit size. RCC develops cracks from thermal mass and poor base preparation. Bitumen surfaces crack from extreme weather and wear patterns, creating potholes.
Repairs
Paver block repair is simple, fast and affordable; individual blocks can be replaced with immediate usability restored. RCC repair is labour intensive and expensive, often requiring complete slab replacement. Bitumen patchwork repairs are inexpensive but lack durability.
Reuse
Paver blocks can be removed and reinstalled. Both RCC and bitumen cannot be reused directly but are recyclable through crushing.
Quality
Paver blocks are produced in large volumes to meet stringent specifications and Indian Standards. RCC quality depends on site specific concrete and compaction conditions. Bitumen strength relies on proper subgrade preparation and material compression.
Environmental impact
Paver blocks are environmentally benign. RCC construction poses no environmental harm. Bitumen production releases greenhouse gases contributing to air pollution.
Colour and shapes
Paver blocks offer diverse colour and shape options. RCC and bitumen roads lack aesthetic variety in appearance.
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