DEMONSTRATION OF MANUFACTURING TECHNOLOGY FOR CONCRETE AND CLSM UTILIZING WOOD ASH FROM WISCONSIN

Wisconsin industry generates approximately one million dry tons (or approx. 1.8 million cubic yards) of wood ash per year. Disposal of wood ash in landfills costs Wisconsin industry significant direct cost plus unknown future liabilities due to environmental concerns related to such materials in landfills. This project will establish the initial manufacturing technology for use of wood ash generated by the forest products industry in concrete (structural-grade concrete) and flowable slurry (Controlled Low Strength Materials, CLSM) through an initial laboratory evaluation followed by prototype manufacturing and full-scale manufacturing. A technology transfer seminar, which also included a demonstration of the placement of concrete and CLSM mixtures containing wood ash, was conducted to transfer the knowledge developed about the use of wood ash in construction material to the engineering community; including industrial and government