| 摘要 |
<p>Composite materials having fly ash as a constituent is manufactured into a sulfur-less gypsum-like material, a portland cement-like material and a lightweight aggregate. Methods for making such composite materials include combining precipitated calcium carbonate and either Class C-fly ash, Class F-fly ash and/or bottom ash in particular ratios by adding water to dry material and subsequently allowing the material to dry to create the above-described products. Methods for forming and using such composites include the use of a single piece gatefold form for casting manifold surfaces, a panel system for forming concrete walls and a system for creating retaining walls.</p> |
