Accelererad provning av vägkonstruktioner: referensöverbyggnad enligt ATB Väg

Download
Leif G Wiman

In this report, two full-scale tests (SE10 and SE11) are described that were performed under the same test conditions in order to investigate the accuracy of repeated tests. The tests were performed by accelerated loading using the HVS (Heavy Vehicle Simulator) in the road laboratory at the VTI.

The purpose of performing two tests with the same kind of road structures, i.e. a reference construction according to the Swedish Road Administration's ATB Väg, under the same test conditions was to get to know the accuracy of the test results from repeated test. This was made in order to be able to make demands on the results of corresponding HVS-tests of road structures that don't follow the specifications of the Swedish Road Administration, for example alternative road structures in cases of side tenders contracts.

The results presented in this report are the results from surface rut depth measurements, permanent deformations in different layers and total deformation of the subgrade during the tests as well as falling weight deflectometer measurements before and after the tests. The results of the response measurements (stresses, strains and deflections) are stored in an Access database for later analyses.

The results of rut depth measurements show a relatively large difference in rut depth growth on the surface during the second phase (in wet condition) of the two tests. In two out of five measurement positions there was correspondence, whereas in the three other measurement positions there was a larger rut depth concerning SE11. The deviation could be referred to the rut depth growth during the first days in wet condition but some clear reason has not been able to be determined.

MEET US


7
Dec

Shipping and the environment – research meets reality

Centre for Transport Studies (CTS) in co-operation with Ports of Stockholm invite you to the seminar Shipping and the environment – research meets reality.

LATEST NEWS


2017-10-16

ERPUG Forum

The five-year anniversary of European Road Profile Users' Group (ERPUG) Forum will take place at Ramboll head quarter, Copenhagen, Denmark October 19-20, 2017.


2017-09-29

Self-driving buses in Sweden next year?

A self-driving, fossil-free bus. This idea might become reality through a forthcoming collaborative project involving the Swedish National Road and Transport Research Institute (VTI), Linköping University and several other participants. The project group aim...


2017-09-29

New climate-proof solutions for hard surfaces in cities

High-density road infrastructure that emphasise maximum durability and minimum maintenance create inflexible systems, which put increased stress on urban trees and lead to increased risk for flooding. Over the past five years, the ‘Climate-proof solutions for...


2017-09-29

VTI is preparing for automated vehicles

Automation of traffic systems will lead to major changes. The European Union’s (EU) CoEXist research project began in June 2017 with the aim of preparing cities and road operators for the introduction of self-driving vehicles. The Swedish National Road and...


2017-07-05

Vehicle Driver Monitoring: sleepiness and cognitive load

To prevent road crashes it is important to understand driver related contributing factors, which have been suggested to be the critical reason in 94 per cent of crashes. The overall aim of the project Vehicle Driver Monitoring has been to advance the...


2017-06-29

Tomas Svensson new director-general

Tomas Svensson was today appointed Director-General of VTI. Tomas has been acting Director-General since January 2017.