Evaluation of causes of excessive settlements of pavements behind bridge abutments and their remedies - phase I progress report no. 1 (84-12-2)

Abstract

Bridge approach settlement problem is quite extensive in the U.S.A. This problem has been investigated since early 1960s, but no satisfactory solution has been achieved. A comprehensive literature search has been carried out with the aim of understanding the problem and the approaches of many investigators. The pertinent works have been reviewed thoroughly and the highlights of these previous studies are presented in this report. It was felt that the experience of various agencies involved in construction of roads and highways would be immensely helpful in deciding the course of this research. Hence, a survey was conducted by sending a questionnaire to various agencies involved in construction and maintenance of roads and highways. The responses have been carefully analyzed and presented in the report. At the end, a discussion of the findings and recommendations for further research have been made.