| 摘要 |
<p>A cement composition for extrusion, which is produced by incorporating, into cement mortar, 3 to 15 weight % of crushed pulp fiber, 0.2 to 1 weight % of at least one member selected from an alkylcellulose and a hydroxyalkylalkyllcellulose, 2% water solution having 80,000 cps or more viscosity, enables to cut production cost by reducing the loads of the binder material using a pulp fiber without carcinogenicitic asbestos fiber. Furthermore it allows to assure an excellent extrudability and to provide the moldings with such workability as nailing and sawing.</p> |
