| 摘要 |
Road form layer characterized in that it is substantially comprised of fine sand whose grain size is defined by the ratio d/D wherein d corresponds to small diameter particles and D corresponds to larger diameter particles, this sand satisfying the relationship d = 0 et D </= 6 mm, and being associated with synthetic fibres in an amount approximately comprised between 0.2 et 5 per thousand by weight, preferably between 0.5 and 1 per thousand.
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