| 摘要 |
<p>PURPOSE:To obtain an inexpensive and lightweight building material, etc., having required converted timbers and utilizing paper sludge, by mixing the paper sludge with cement and water and further sand, gravel, etc., in respective adequate amounts and forming the resultant mixture. CONSTITUTION:Paper sludge generated from pulp mills, etc., in industrial wastes and at least cement and water and further sand or gravel, etc., are mixed in respective adequate amounts. Thereby, a building material, etc., having various effects fitted for respective purposes of use and utilizing the paper sludge is obtained. As a result, reduction of cost in the pulp industry can be contrived and treatment and disposal of the paper sludge can be simultaneously eliminated to prevent environmental pollution from occurring.</p> |
