| 摘要 |
<p>PURPOSE:To produce a light-weight concrete having excellent dimensional stability by using an inorganic foam as an aggregate. CONSTITUTION:550-750kg binder comprising 8-63wt.% Portland cement, 4-56wt.% fine powder of blast furnace slag and 30-60 silica rock powder based on 1m<3> light weight concrete having low shrinkage is blended with water, a blowing agent, a water-reducing agent and an inorganic foam having 200-1,000 liter bulk volume and cured in an autoclave to give a low-shrinkage light-weight concrete having <=100kg/cm<2> compression strength, <=0.10 shrinkage percentage after drying for 13 weeks, <=0.10% carbonization ratio for two weeks, <=0.22% carbonization ratio for four weeks and 0.75-1.20 specific gravity.</p> |
