LIGHTWEIGHT AGGREGATE CONCRETE FOR LOAD-BEARING STRUCTURES

AFTER REVIEWING THE USE OF LIGHTWEIGHT AGGREGATE CONCRETE IN THE CONSTRUCTION OF LOAD BEARING STRUCTURES IN DENMARK & OTHER COUNTRIES THE AUTHORS DISCUSS THE PROPERTIES OF THE CONCRETE, TYPES OF AGGREGATE USED, SPECIFICATIONS AND REGULATIONS, AND DESIGN OF LIGHTWEIGHT CONCRETE STRUCTURES. PROBLEMS OF PROPORTIONING AND PLACING ARE BRIEFLY MENTIONED. THE AUTHORS CONCLUDE THAT THE USE OF LIGHTWEIGHT AGGREGATE CONCRETE IS GENERALLY INCREASING AND THAT THIS TYPE OF CONCRETE SHOULD BE REGARDED AS ORDINARY CONCRETE WITH SLIGHTLY DIFFERENT PROPERTIES. IN MANY COUNTRIES, THE SCOPE OF THE SPECIFICATIONS FOR REINFORCED CONCRETE HAS BEEN EXTENDED SO THAT THEY COVER LIGHTWEIGHT AGGREGATE CONCRETE. THE TYPES OF LIGHTWEIGHT AGGREGATE CONCRETE COMMONLY USED FOR LOAD-BEARING STRUCTURES RANGE FROM 1400 TO 1800 KG/CU.M. IN WEIGHT PER UNIT VOLUME, AND FROM 200 TO 400 KG/SQ.CM, IN STRENGTH. THE MOST FUNDAMENTAL DIFFERENCES BETWEEN LIGHTWEIGHT CONCRETE AND ORDINARY CONCRETE ARE THE LOWER MODULUS OF ELASTICITY AND LOWER TENSILE STRENGTH OF FORMER. THE COST OF LIGHTWEIGHT CONCRETE IS HIGHER THAN THAT OF ORDINARY CONCRETE.

  • Authors:
    • Mondorf, P E
    • Ingholt, N U
  • Publication Date: 1971

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00214383
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: TRIS
  • Created Date: Sep 25 1972 12:00AM