01551344

Component

This paper deals with the determination of test criteria for the durability assessment of polyvinyl chloride (PVC)-based geosynthetic barriers (GBR-P) products in tunnel sealing systems. In the project different products for road tunnel application are investigated by systematic long time storage in hot water using a new test procedure based on SIA V 280 standard (test no. 13) and EN 14415. The objective of this research project is to derive suitable exposure conditions and criteria for a practical testing procedure with regard to service lifetimes of up to 100 years. For that test temperature and time as well as the best suitable test medium have been investigated in a structured way. To verify the results of the new test procedure the material properties of GBR-P samples removed from older road tunnels are investigated. Based on the presented results of the still on-going research program some preliminary conclusions regarding the updating of the German regulations for road tunnel sealing systems (ZTV-ING part 5 section 5 and TL/TP KDB) are given.

This paper was sponsored by TRB committee AFF60 Tunnels and Underground Structures.

01550057

15-1525

English

12p

2015

Transportation Research Board 94th Annual Meeting

Digital/other

Figures; Photos; References; Tables

Durability; Geosynthetics; Polyvinyl chloride; Sealing compounds; Service life; Test procedures; Tunnels

Bridges and other structures; Highways; Materials; I25: Design of Tunnels; I30: Materials

Transportation Research Board Annual Meeting 2015 Paper #15-1525

TRIS, TRB, ATRI

Dec 30 2014 12:34PM