A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Study on wood chip concrete with used timber
About 20 million cubic meters used-timbers are discharged every year from demolished buildings, mainly wooden houses in Japan. The authors have carried out a study on recycling used timber as wood-chip concrete. The experiment was carried out as follows. First, the wood-chips were filled into a steel mold to achieve the desired packing ratio with a compressive stress of 0.5 MPa to about 1.0 MPa. Then, the fresh cement paste was injected into the mold to make the specimens. The densities of the wood-chip concrete in this case generally fall into the range of 920 kg/m3 to 1250 kg/m3. To evaluate the performance of the wood-chip concrete, bending strength, compressive strength, drying weight loss and shrinkage, thermal conductivity, and thermal expansion were tested. Furthermore, two types of artificial light-weight aggregate were added to the wood-chips mold and cement paste simultaneously to reduce the densities of the concrete, and the compression of the wood-chips for packing was not needed in the production process. The densities of the wood-chip concrete with the light weight aggregates were about 780 kg/m3 to 920 kg/m3. After these tests, it became clear that the wood-chip concrete will be suitable for use as a building material, for partition walls, floor joists, floor boards, etc.
Study on wood chip concrete with used timber
About 20 million cubic meters used-timbers are discharged every year from demolished buildings, mainly wooden houses in Japan. The authors have carried out a study on recycling used timber as wood-chip concrete. The experiment was carried out as follows. First, the wood-chips were filled into a steel mold to achieve the desired packing ratio with a compressive stress of 0.5 MPa to about 1.0 MPa. Then, the fresh cement paste was injected into the mold to make the specimens. The densities of the wood-chip concrete in this case generally fall into the range of 920 kg/m3 to 1250 kg/m3. To evaluate the performance of the wood-chip concrete, bending strength, compressive strength, drying weight loss and shrinkage, thermal conductivity, and thermal expansion were tested. Furthermore, two types of artificial light-weight aggregate were added to the wood-chips mold and cement paste simultaneously to reduce the densities of the concrete, and the compression of the wood-chips for packing was not needed in the production process. The densities of the wood-chip concrete with the light weight aggregates were about 780 kg/m3 to 920 kg/m3. After these tests, it became clear that the wood-chip concrete will be suitable for use as a building material, for partition walls, floor joists, floor boards, etc.
Study on wood chip concrete with used timber
Kasai, Y. (author) / Kawamura, M. (author) / Zhou, J.D. (author)
1998
24 Seiten, 15 Bilder, 6 Tabellen, 11 Quellen
Conference paper
English
Study on Wood Chip Concrete with Used Timber
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