00677578

Component

http://onlinepubs.trb.org...trr/1994/1462/1462-006.pdf

https://scholar.google.co...+Vos&publication_year=1994

Increasing traffic in the Netherlands increases the demand for roads to be widened. In several cases the sand body of the roads is founded on soft soils. To widen these roads, the width of the sand body has to be increased. The widening process can cause cracks in the asphalt layer of the original road, which has to be prevented as much as possible. To investigate the effect of different methods of road widening, a test program was carried out in the small geotechnical centrifuge of the University of Delft. Two different methods of widening were simulated: the horizontal method and the gap method. The excess pore water pressure was taken into account, and the deformation of the clay layer and sand body was measured by means of image processing. Although the differences in deformations measured were small, it could be seen clearly that the horizontal widening method caused more horizontal displacements than the gap method. This indicates that cracking of the asphalt layer could be minimized by using the gap method of construction.

This paper appears in Transportation Research Record No. 1462, Compaction of Difficult Soils and Resilient Modulus Testing. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

01495760

English

p. 47-53

1994

Transportation Research Record

0309060680

Figures (6) ; Photos (6) ; References (7) ; Tables (1)

Centrifuges; Construction management; Deformation; Geotechnical engineering; Image processing; Laboratory studies; Pavement widening; Pore water pressures; Simulation; Soft soils

Construction; Geotechnology; Highways; I42: Soil Mechanics; I52: Construction of Pavements and Surfacings

TRIS, TRB

May 3 1995 12:00AM

• ACCURACY IMPROVEMENT OF EXTERNAL RESILIENT MODULUS MEASUREMENTS USING SPECIMEN GROUTING TO END PLATENS
• ANALYSIS OF PROCEDURES FOR ESTABLISHING IN SITU SUBGRADE MODULI
• BEHAVIOR OF EXPANDED POLYSTYRENE BLOCKS
• COMPACTED CLAY EMBANKMENT FAILURES
• COMPACTION CONTROL CRITERIA FOR CLAY HYDRAULIC BARRIERS
• COMPACTION SPECIFICATIONS FOR LOW HYDRAULIC CONDUCTIVITY CLAY EMBANKMENTS
• FACTORS INFLUENCING DETERMINATION OF A SUBGRADE RESILIENT MODULUS VALUE
• INFLUENCE OF TESTING PROCEDURE AND LVDT LOCATION ON RESILIENT MODULUS OF SOILS
• RESILIENT MODULI OF AGGREGATE MATERIALS: VARIABILITY DUE TO TESTING PROCEDURE AND AGGREGATE TYPE
• RESILIENT MODULUS OF SUBGRADE SOILS: COMPARISON OF TWO CONSTITUTIVE EQUATIONS
• ROCK CORRECTION ISSUES IN COMPACTION SPECIFICATIONS FOR HIGH GRAVEL CONTENT SOIL