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Can You Pour Concrete Over Asphalt?

1. The Fundamental Problem - Asphalt is a flexible pavement, while concrete is rigid and inflexible, Asphalt's movement from temperature changes will crack the concrete slab above, The oil-based nature of asphalt can interfere with proper concrete curing.
2. Conditions for Success - The existing asphalt base must be in excellent, structurally sound condition, You must use a bond breaker like sand or a plastic sheet, The new concrete slab must be thick and reinforced with rebar.
3. Major Risks Involved - Your new concrete surface will have a significantly reduced lifespan over time, Water can get trapped between layers, causing freezing and heaving damage, The cost of failure is high, requiring removal of both layers.
4. The Professional Recommendation - The best practice is always to remove the old asphalt layer completely, A properly prepared, compacted gravel sub-base is the ideal concrete foundation, This standard method ensures the maximum longevity and performance of your concrete.

Full video:    • Can You Pour Concrete Over Asphalt?  

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Disclaimer:
This content is for educational purposes only and does not constitute professional advice. Always verify information and consult qualified experts before applying it.