- At or below the cost of construction lumber, while providing equivalent strength.
- Installs like wood, including cutting with a saw, hammering by hand, using a pneumatic nail gun, and screws together like wood.
- Lasts longer than pressure-treated lumber when exposed to water, and suffers no fungal or insect damage. It is also more flame-resistant.
- Recycled material infill (approximately 50% by volume) provides withdrawal strengths similar to wood in common construction applications.
Wood is a popular construction material because of its low cost and easy workability. However, this easy workability also presents significant and concerning limitations, including rotting, warping, and insect damage. Concrete does not have these limitations and is much stronger, but is also much more expensive. Inventors at USF have proposed a ‘nailable’ concrete that would meet the strength requirements of wood without exceeding them. It also installs the same way as wood, accepting traditional nails, fasteners, and other reinforcements. Its recycled material infill could allow the cost of concrete to be reduced to the cost of lumber, and makes the proposed material an environmentally friendly option. The proposed material would be especially useful as a substitute for wood in construction applications where pressure-treated lumber is used.
A sample fence made of the nailable concrete boards (1x6) and posts (3.5-4x6.5 equivalents).
A sample beam shown being tested to failure.