Waste glass as a raw material for lightweight aggregate
Abstract
Production of lightweight aggregate from the glass fraction of municipal incinerator residues was undertaken by the Bureau of Mines to use the great amount of glass generated by incineration. A mixture of 78 percent glass, 20 percent clay, and 2 percent sodium silicate was pelletized, then expanded by exposure to a temperature of 1,550 F for 15 minutes. The resulting lightweight material weighted 38 lb/cu ft and exhibited excellent pore structure. Concrete test cylinders made from the lightweight aggregate had a unit weight of 104 lb/cu ft and a compressive strength of 2,550 lb/sq in after a 28-day steam curing treatment.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- January 1976
- Bibcode:
- 1976STIN...7630404L
- Keywords:
-
- Glass;
- Solid Wastes;
- Waste Utilization;
- Materials Recovery;
- Pollution Control;
- Recycling;
- Waste Disposal;
- Engineering (General)