THE MARRIAGE OF CONCRETE AND PLASTICS

THE USE OF PLASTICS TO IMPROVE THE PROPERTIES OF CONVENTIONAL CONSTRUCTION MATERIALS ESPECIALLY CONCRETE IS DISCUSSED. HAVING IDENTIFIED THE DEFICIENCIES OF CONCRETE THAT MAY BE IMPROVED BY THE USE OF PLASTICS THE AUTHOR CONSIDERS THE 2 MAIN PLASTICS-CONCRETE COMBINATIONS: APPLICATION OF PLASTICS ON CONCRETE SURFACES AND INTERFACES, AND INCORPORATION OF PLASTICS IN THE CONRETE MASS. COATINGS, ADHESIVES, MOLDS AND SHUTTERINGS ARE INCLUDED IN THE FIRST CATEGORY. EMPHASIS IS LAID ON THE SECOND CATEGORY, WHICH CONTAINS POLYMER EMULSIONS, MONOMER ADDITIONS AND FIBER REINFORCEMENT. FIBER REINFORCEMENT IS PRESENTLY THE SUBJECT OF RESEARCH IN MANY COUNTRIES AND IS EXPECTED TO BE INCREASINGLY USED IN THE CONCRETE INDUSTRY. ONE TECHNIQUE UTILIZING FIBRILLATED POLYPROPYLENE FILM FIBERS (PPFF) IS ALREADY USED COMMERCIALLY. COMMERCIALLY AVAILABLE PPFF TWINES ARE CUT INTO 50 MM LONG STRANDS AND RANDOMLY DISTRIBUTED IN CONCRETE OR MORTAR. THE FIBERS IN PROPORTION OF 0.2% BY WEIGHT GIVE GREATLY IMPROVED IMPACT STRENGTH TO CONCRETE AND ENABLE THE PRODUCT TO REMAIN WHOLE AFTER CRACKING. PRACTICAL USES OF PPFF REINFORCED CONCRETE DO NOT INCLUDE LOAD BEARING BEAMS OR CONSTRUCTIONS WHERE REINFORCEMENT WITH STEEL IS ESSENTIAL, BUT COVER A WIDE RANGE OF PRODUCTS WHERE STEEL REINFORCEMENT IS INCORPORATED ONLY FOR TRANSPORT AND HANDLING AND IS REPLACED BY INERT FIBERS TO ELIMINATE THE RISK OF CORROSION, TO REDUCE OVERALL WEIGHT AND TO OFFER SAVINGS IN MANUFACTURE AND ASSEMBLY COSTS. /TRRL/

  • Corporate Authors:

    Plastica /Netherlands

    ,    
  • Authors:
    • Zonsveld, J J
  • Publication Date: 1970-10

Media Info

  • Features: Figures; Photos; References; Tables;
  • Pagination: p. 474-84
  • Serial:
    • Volume: 23
    • Issue Number: 10

Subject/Index Terms

Filing Info

  • Accession Number: 00213184
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: TRIS
  • Created Date: Jun 11 1972 12:00AM