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What is Sub-Ballast Layer Construction Optimization about?

This document discusses a case study of construction optimization for a sub-ballast layer for a railway project in Portugal. Due to difficulties obtaining sufficient granite material for the specified 30 cm sub-ballast layer, an alternative solution using limestone for the bottom 15 cm was proposed. Laboratory and field testing was conducted to evaluate the feasibility of the alternative solution in assuring construction quality. The results showed that the alternative solution complied with quality require

Author

Sergio Cunha

Language

EN