Twenty-Four Year Performance Review of Concrete Pavement Sections Made with Siliceous and Lightweight Coarse Aggregates

摘要

Two small sections of the north and south frontage roads of Interstate Loop 610 around Houston were built in 1964 as experimental CRCP sections to study the effects of differences in percent steel, preformed crack spacing, and type of aggregate. The performance of these sections was monitored by performing several surveys during the year after construction. Then data were collected in 1974 and again in 1984. In addition, a small amount of data was collected in 1988. The report includes an empirical study made to address questions on the effect of the design variables on the long-term performance of CRCP. An attempt is also made to compare observed performance indicators with theoretical expectations, with a view to gaining insights that will be helpful in refining the theoretical model. The study indicated that the pavement sections built using lightweight aggregate concrete have relatively less surface distress than the standard-aggregate sections.