| 摘要 |
<p>PURPOSE:To provide an inexpensive high-strength lightweight concrete product using readily available materials without the need for high-temperature and high-pressure steam curing, capable of preventing tile from staining when it is pointed thereto. CONSTITUTION:The objective lightweight concrete can be obtained by using a binder, lightweight aggregate and water without the need for high-temperature and high-pressure steam curing. The binder comprises (1) 30-75wt.% of cement and (2) 70-25wt.% of pozzolana fine powder such as blast furnace quenched slag fine powder or fly ash, containing a high-performance water reducing agent. The lightweight aggregate comprises (3) 100-25vol.% of fine granular rigid perlite >=90% in the particle diameter range of <=0.6mm and 0.4-0.9kg/l in volumetric weight and (4) 0 75vol.% of coarse granular rigid perlite >=90% in particle diameter range of 0.6 to 5mm and 0.1-0.4kg/l in volumetric weight.</p> |
