CHARACTERISTICS OF THE SANDS OF RECONCAVO BAIANO, AND THEIR UTILIZATION AS CONCRETE AGGREGATES

AS PART OF A BROADER WORK OF INVESTIGATION, 45 SAMPLES OF SANDS FROM 14 SAND DEPOSITS EXPLORED IN THE SAO SALVADOR AREA ARE ANALYZED AS TO THEIR CHARACTERISTICS AS FINE AGGREGATES FOR CONCRETES. THE RESULTS INDICATE THAT THE ANALYZED SANDS ARE "FINE SANDS", WITH GRADING GENERALLY UNDER THE "UTILIZATION ZONE" IN THE BRAZILIAN SPECIFICATION (ABNT), WITH FINENESS MODULUS UNDER 2.9. THEY SHOW SATISFACTORY CHARACTERISTICS IN RELATION TO THE DUSTY MATERIAL, CLAYS LUMPS, AND ORGANIC IMPURITIES. THE COARSER SANDS NOT ONLY PRODUCED LESS EXPENSIVE CEMENT GROUTS BUT ALSO, MORE RESISTANT CEMENT GROUTS, CONSISTENCY AND WATER- CEMENT RATIO BEING EQUAL. MEASURES ARE RECOMMENDED FOR THE IMPROVEMENT OF THE TESTING SERVICES VIEWING THE CONTINUATION OF THE WORK. /IPR/

• Authors:
  • Carlos, REIS LARANJEIRAS A
  • Pereira, MAGALHAES LJ
  • Soares, DE AZEVEDO G
• Publication Date: 0

Subject/Index Terms

• TRT Terms: Cement grouts; Clay; Concrete; Concrete aggregates; Consistency; Fine aggregates; Fineness; Impurities; Modulus; Sand; Sand deposits; Testing; Water cement ratio
• Old TRIS Terms: Fineness modulus; Testing services
• Subject Areas: Geotechnology; Highways;

Filing Info

• Accession Number: 00217804
• Record Type: Publication
• Source Agency: Road Research Institute /Brazil
• Files: TRIS
• Created Date: Apr 27 1970 12:00AM