TESTS ON AGGREGATES: (A) DETERMINATION OF THE AVERAGE THICKNESS OF CHIPPINGS; (B) WEATHERING BEHAVIOUR TESTS ON AGGREGATES; (C) DETERMINATION OF THE HOMOGENEITY OF CHIPPINGS. PRELIMINARY DRAFT OF TEST PROCEDURE

ESSAIS SUR LES GRANULATS: A) DETERMINATION DE L'EPAISSEUR MOYENNE DES GRAVILLONS; B) ESSIS D'ALTERABLILITE DES GRANULATS; C) DETERMINATION DE L'HOMOGENEITE DES GRAVILLONS. AVANT-PROJECT DE MODE OPERATOIRE

This publication describes a method of measuring the average thickness of a lot of aggregates by sieving the sample on slotted mesh. Details are given of three weatherability tests: a thermo-chemical test to determine the sensitivity of rocks to leaching of felspar weathered zones, a test with hydrogen peroxide to detect sensitivity to swelling, a thermal shock test after saturation to measure the propensity of rocks to exfoliation. The last two tests apply to all rocks. One part of the article describes the homogeneity test by means of dense solution; it permits the separation of aggregates of low apparent bulk density. This preliminary test procedure draft describes each test completely: aim, principle, apparatus, sampling, test procedure, calculation. /TRRL/

  • Publication Date: 1976-11

Language

  • French

Media Info

  • Features: Figures; Tables;
  • Pagination: 26 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00184135
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Report/Paper Numbers: Monograph
  • Files: ITRD, TRIS
  • Created Date: Jan 13 1979 12:00AM