PRODUCTION AND USE OF LIGHTWEIGHT SILICATE AGGREGATES

LIGHTWEIGHT PELLETIZED AGGREGATES WERE PREPARED FROM VARIOUS TYPES OF LOCAL SHALES. ANALYSIS INDICATED THAT THE CLAYS ARE MONTMORILLONITE-BEARING CLAYS, WITH SOME QUARTZ, AND FAIR AMOUNTS OF FLUXES (MAINLY IRON OXIDE, ALKALIES, AND ALKALINE EARTHS). THE CLAYS REACHED MAXIMUM BLOATING AT 1250 DEGREES, AND FUSED AT 1300-1400 DEGREES. THE EASTERN DESERT SHALES SHOWED A MAXIMUM OF 4 TO 5-FOLD EXPANSIVITY AT 1250 DEGREES. THE PELLETIZED AGGREGATES WERE COATED WITH A SILICEOUS CLAY VARIETY BEFORE FIRING TO PREVENT THE PELLETS FROM STICKING TOGETHER. STANDARD CONCRETE MIXES WERE PREPARED FROM THE PELLETIZED AGGREGATES, NORMAL PORTLAND CEMENT, AND WATER. THE LIGHTWEIGHT CONCRETE SAMPLES WERE CHARACTERIZED BY LOW DENSITY, AND RELATIVELY GOOD STRENGTHS (CRUSHING STRENGTH 42, TENSILE STRENGTH 5, AND BENDING STRENGTH) AFTER 7 DAYS CURING UNDER WATER. /AUTHOR/

• Supplemental Notes:
  • Vol 10, No 3, PP 377-382
• Corporate Authors:

  N/A

  ,   United States 
• Authors:
  • Gamal, G
  • Maksoud, M A
• Publication Date: 1967

Media Info

• Serial:
  • Journal of Chemistry of the UAR
  • Publisher: N/A

Subject/Index Terms

• TRT Terms: Admixtures; Clay; Clay soils; Coatings; Concrete curing; Crushing; Fluxes; Lightweight aggregates; Lightweight concrete; Montmorillonite; Pellets; Portland cement; Quartz; Shale; Silica stone; Silicates; Tensile strength; Water
• Old TRIS Terms: Siliceous clays
• Subject Areas: Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00217748
• Record Type: Publication
• Source Agency: Chem Abstracts, Applied Chemistry Sect
• Files: TRIS
• Created Date: Aug 10 2004 4:50PM