Research Report 79 Performance of unreinforced concrete roads constructed between 1970 and 1979

Publication Year

1987

Document Status

Current

Abstract

Thirty-six unreinforced concrete roads were surveyed to provide information on the structural performance, the performance of joints and the surface characteristics. Statistical examination of the performance data has produced a number of important conclusions. Fixed-form paved slabs are better than those produced by slip form paving in respect of less shallow-spalling at transverse joints and more adequate surface textures. Transverse joints with neoprene seals had greater vulnerability to shallow spalling and had more deficient contraction joints that those sealed with hot-poured compounds. Significant differences were observed for cracking, deficient contraction joints and surface texture when the effects of contractors were studied; the standard of workmanship plays an important part in the performance of concrete roads.

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