OBSERVATIONS ON THE MECHANICAL BEHAVIOUR OF ROAD-BASES STABILIZED WITH CEMENT

NABLYUDENIYA ZA RABOTOJ TSEMENTOGRUNTOVYKH OSNOVANIJ

The advantage of cement stabilized road bases resides in the fact that they afford a better load distribution due to their modulus of rigidity. The value of this modulus depends on the type of practical test used to measure it. It is recommended that flexural or uniaxial compression tests be used on accurate measurements of deflection or lateral deformation. Good agreement was observed. The brazilian test can also be used from which flexural strength can be deduced. A table (based on observations made on a road between 1965 and 1970) shows the necessary thicknesses for the road base for different moduli of the other layers, by means of assimulation to rigid layers assumed to be without cracks. The occurence of cracks in the road base appears to be caused by 'under-design' of the pavement or 'under proportioning' of the cement. In many cases, they do not appear in the surfacing. Two pavement design methods are recommended. The formulae given apply to main roads; for other types of road cracking must be taken into account and, accordingly, the value of physical and mechanical parameters must be lowered.

  • Corporate Authors:

    Mezhdunarodanya Kniga

    Smolenskaja Ploscad 32/34
    Moscow G-200,   USSR 
  • Authors:
    • Sall, A O
    • Kuznetsov, A P
  • Publication Date: 1971-10

Language

  • Russian

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00081559
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: May 1 1975 12:00AM