BACKGROUND AND AIMS A previous paper (Annals of Botany 103: 673-685) described formation of clayey pavements in lateral root catchments of eucalypts colonizing a recently formed sand dune in south-west Western Australia. Here chemical and morphological aspects of their formation at the site are studied. METHODS Chemical and physical examinations of soil cores through pavements and sand under ...

Several in-place rehabilitation techniques have been used before placing an Asphalt Concrete (AC) overlay on Portland Cement Concrete (PCC) pavements in attempts to minimize reflection cracking. Among these techniques, "rubblization" of PCC has been recognized to be the most utilized procedure for the mitigation of reflection cracking in US. This paper presents the practices on the use of rubbl...

Roads are the main transportation system in any country and, therefore, must be maintained good physical condition to provide a safe and seamless flow transport people goods. However, road pavements subjected various defects because of construction errors, aging, environmental conditions, changing traffic load, poor maintenance. Regular inspections therefore recommended ensure serviceability mi...

The rate at which the construction industry explores and consumes non-renewable natural aggregates other industrial products such as bitumen, lime, cement during rehabilitation of road pavements has over time proven to be environmentally degrading non-sustainable. This, alongside issues high solid waste generation inadequate disposal, led series studies by various researchers find methods integ...

This paper is a summary report on a research project entitled “An Investigation of Recycling Bituminous Pavements,” an HPR Research Project conducted by the JHRP staff at Purdue University. The research was performed by James L. McKinney, Graduate Instructor in Re­ search, under the direction of Professors Donn E. Hancher and Leonard E. Wood. Copies of the final report are available through the...

Flexible pavements comprise about 93 percent of paved roads in the United States. Although flexible pavements are widely used for reasons such as cost, constructability and consistent performance, they are often subject to severe rutting. Rutting is the accumulation of longitudinal depressions under the wheelpaths caused by the repeated traffic loads. Rut is a major concern for the integrity of...