HIGH STRENGTH CONCRETE USING DOLOMITE AS COARSE AGGREGATE . PROTECTION OF CONCRETE. PROCEEDINGS OF THE INTERNATIONAL CONFERENCE HELD AT THE UNIVERSITY OF DUNDEE, SEPTEMBER 11-13, 1990

High strength concrete has become of special significance to be used in special structures, precast concrete and prestressed concrete. In this work about 12 concrete mixes have been investigated using crushed dolomite as coarse aggregate, control mixes for comparison. Various cement contents water/cement ratios, coarse/fine aggregate ratio and different curing methods have been studied to evaluate the potentiality of using this type of coarse aggregate to produce high strength concrete to be used for some special structures erected in Suez Canal area. Plasticizer and early strength admixture with different dosage are used in order to reduce the amount of mixing water to compensate the relatively high water absorption of the crushed dolomite. Fresh and hardened concrete properties are studied and compared with contral mixes having gravel as coarse aggregates. The increase in concrete strength when using crushed dolomite as coarse aggregate is tangible. Analysis, discussions and conclusions for test results of the basic properties and their control in both fresh and hardened stages are presented. (Author/TRRL)

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  • Corporate Authors:

    E and F Spon Limited

    2-6 Boundary Road
    London,   England 
  • Authors:
    • BAHNASAWY, H H
    • EL-REFAI, F E
  • Publication Date: 1990

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Filing Info

  • Accession Number: 00620045
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • ISBN: O-419-15490-6
  • Files: ITRD, TRIS
  • Created Date: Mar 31 1992 12:00AM