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https://nap.nationalacademies.org/catalog/27432/critical-issues-in-transportation-for-2024-and-beyond

EXPERIENCE IN SWEDEN OF CEMENT-BOUND ROADBASES

CEMENT-BOUND BASES IS A COMMON DESIGNATION FOR TWO TYPES OF PAVEMENT LAYERS MADE IN COMPLETELY DIFFERENT WAYS WITH THE ONLY POINT IN COMMON BEING THAT THE BINDING AGENT IN BOTH CASES IS CEMENT. ONE TYPE OF BASE CONSISTS OF GRAVEL STABILIZED WITH CEMENT (CG) OR SAND STABILIZED WITH CEMENT (CS). THE OTHER TYPE CONSISTS OF MACADAM, WHICH IS COMPACTED AND THEN GROUTED WITH CEMENT MORTAR (CM). A LAYER OF CEMENT- STABILIZED GRAVEL OR SAND IS MADE BY MIXING CEMENT AND WATER WITH THE BASIC MATERIAL EITHER DIRECTLY ON THE SITE OR IN A MIXER. A LAYER OF THE MIXTURE IS THEN APREAD OVER THE WORKING AREA AND COMPACTED AS FIRMLY AS POSSIBLE. THE SECOND PROCESS CONSISTS OF FILLING THE CAVITIES IN THE MACADAM LAYER WITH CEMENT-MORTAR. IN ORDER TO CARRY OUT THE GROUTING WITHOUT THE MACADAM BEING SEPARATED BY THE MORTAR, MORTAR OF A VERY LOOSE CONSISTENCY SHOULD BE USED AND THE MACADAM LAYER VIBRATED DURING GROUTING IN ORDER TO INCREASE THE PENETRATING POWER OF THE MORTAR. CEMENT-BOUND BASES HAVE BEEN LAID AND TESTED IN SWEDEN ON A FAIRLY LARGE SCALE. BASECOURSES, MAINLY OF CEMENT-STABILIZED SAND, BEGAN TO BE USED ON AIRFIELDS IN THE MIDDLE OF THE 1950'S; SINCE THEN THEIR APPLICATION HAS CONSIDERABLE INCREASED. A NUMBER OF ROADS WITH THIS TYPE OF BASE HAVE BEEN BUILT. EXPERIMENTAL BASECOURSES OF MACADAM GROUTED WITH CEMENT MORTAR HABE BEEN USED IN TEST ROADS. CEMENT-BOUND LAYERS CAN BE USED AT VARIOUS LEVELS OF THE ROAD STRUCTURE. /RRL/

  • Corporate Authors:

    Cembureau, Malmo /Swed

    ,    
  • Authors:
    • Orbom, B
  • Publication Date: 1965

Media Info

  • Features: Figures; Photos; Tables;
  • Pagination: 16 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00232375
  • Record Type: Publication
  • Source Agency: Road Research Laboratory /UK
  • Files: TRIS
  • Created Date: May 16 1972 12:00AM