Study on the Technology of Exposed-Aggregate Roller Compacted Concrete Pavement Used in Tunnels
According to preparation of noise-reducing concrete with the technology of exposed-aggregate, this paper exploits high performance roller compacted concrete used in tunnels. Based on optimizing proportion, exploiting special exposed-aggregate agent and corollary technology, it is necessary that the high strengthening and the stability in the Course of Using of the exposed-aggregate roller compacted concrete should be further studied. During the study on the properties of strength change of common strength grade exposed-aggregate roller compacted concrete pavement, it found that its strength varied from 38.6MPa to 19.2MPa when the depth of exposed-aggregate reached 3mm.This is the main reason that serious damage occurred in one tunnel pavement which is used less than one year. Consequently, this paper carried out experimental study of high strengthening. Furthermore, this paper have been optimized the parameters of exposed-aggregate roller compacted concrete. And the effect is relatively remarkable.
M. Tang et al., "Study on the Technology of Exposed-Aggregate Roller Compacted Concrete Pavement Used in Tunnels", Advanced Materials Research, Vols. 255-260, pp. 3211-3216, 2011