MUD PUMPING OF RIGID PAVEMENT JOINTS

POMPAGE AUX JOINTS DE CHAUSSEES DE BETON

ONE FORM OF DETERIORATION IN RIGID PAVEMENTS IS PUMPING, WHEN THE JOINTS ARE NOT DOWELLED, THUS RESULTING IN CRACKING OF THE SLAB AND ITS PROGRESSIVE FAILURE. THE OBJECT OF THIS RESEARCH IS TO STUDY THE MECHANISM OF THIS PHENOMENON TO QUANTIFY ITS MAGNITUDE AND TO DEVELOP PREVENTIVE MEASURES. ONLY BIBLIOGRAPHIES COMPILED IN OTHER COUNTRIES AND SOME OBSERVATIONS CARRIED OUT DURING OTHER STUDIES ARE AVAILABLE AT THE PRESENT TIME. IT IS PROPOSED IN 1976 TO SUMMARIZE THE BIBLIOGRAPHIC DATA TO DESCRIBE THE STATE OF THE ART OF THIS TOPIC. AN ATTEMPT WILL BE MADE TO ESTABLISH THE FREQUENCY OF DETERIORATIONS IN RELATION TO THE NATURE OF THE SOIL AND TRAFFIC CONCENTRATION RECORDED ON THIS TYPE OF PAVEMENT.