Installation of the water-resistant panels.
Installation of the water-resistant panels.

Infrastructure project specialist Acciona Construcción SA says that it has won this year’s JEC Construction Innovation Award for its pultruded composite panels used as a leak-proof lining system in a Spanish high-speed railway tunnel construction project.

According to the company, there were limited retrofit solutions available to solve the water ingress problem in a section of the tunnel. Water resistant GRP composite panels proved to be the best solution since they were cost effective and a better long term alternative to the steel and concrete lining options considered. They also met subterranean fire standards.

Acciona used a total of 1,700 tonnes of filled Crestapol 1212 pultrusion resin and glass fiber reinforcement materials, supplied by Scott Bader, pultruding more than 15,000 composite panels which lined approximately 200,000 m2 of the tunnel walling and eliminated the water ingress problem.

This story uses material from Scott Bader, with editorial changes made by Materials Today. The views expressed in this article do not necessarily represent those of Elsevier.