Synthetic Aggregate From Incinerator Residues

by Horace R. Blank, Emeritus Prof. of Geology; Texas A & M Univ., College Station, Tex.,

Serial Information: Journal of the Engineering Mechanics Division, 1976, Vol. 102, Issue 1, Pg. 31-41

Document Type: Journal Paper


Residues from the Holmes Road trash and garbage incinerator of the city of Houston, Texas, were ground, mixed with various additives, and heated in a muffle furnace at controlled temperatures and rates of heating. The results indicate that concrete aggregate, either normal or lightweight, can probably be made from this material. Because the residues are so heterogeneous, after the removal of metal they must be ground, thoroughly mixed, and made into pellets before heating. Commercial sodium silicate solution (water glass) serves as an excellent binder for pelletizing. The coarser fraction of the Holmes Road residue, because of its high content of glass, expands to a lightweight product without any additive other than water. Residues from incinerators in other cities deserve investigation as possible sources of low-cost aggregate.

Subject Headings: Temperature effects | Aggregates | Incineration | Highways and roads | Solid wastes | Chemical additives | Glass | Urban areas | Texas | United States

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