| 摘要 |
<p>PURPOSE:To provide a composition giving extruded products excellent in flexural strengths and impact resistance by adding an organic thickener, (in)organic fibers, etc., to a mixture of blast furnace slag powder having a relatively coarse particle distribution with a cement. CONSTITUTION:A hydraulic composition comprises 70-10wt.% of a cement (e.g. Portland cement) and 30-90wt.% of a blast furnace glassy slag powder comprising 0-30wt.% of particles having the maximum size of <=500mum and a size of 100-500mum, 15-50wt.% of particles having a size of >=50mum, 65-85wt.% of particles having a size of >=10mum, 80-90wt.% of particles having a size of 5mum and 90-99wt.% of particles having a size of >=1mum as shown in the oblique line region of the figure. 100 pts.wt. of the hydraulic composition is compounded with 0.1-5 pts.wt. of an organic thickening agent (e.g. methyl cellulose) and, if necessary, with 0.001-5.26 pts.wt. of inorganic or organic fibers having a diameter of 1-100mum and a length of 1-20mm to provide the composition for extrusion.</p> |
