Appropriate and efficient maintenance of low cost rural roads. Report 6: Case studies of soil stabilisation.
Over the two years project programme, six months were available for the work on chemical soil stabilisers, review of case studies and fibre reinforced soils. This work was split into three parts and Report 6 details the second part of this element of the research, which concentrated on case studies.
Two detailed reviews were conducted. Case study 1 related to the use of an enzyme stabiliser, UBIX 10, in Nepal for the construction of a mountain road. A researcher visited Nepal to observe the trials. He also undertook some monitoring tests to evaluate the success of the stabiliser.
Case Study 2 related to assessment of causes of failure of a trial section of road, stabilised with Terra-fix, constructed in Seychelles. This road failed (pot holes started to appear) a few years after construction. Field and laboratory test results from the trial construction were reviewed. Some laboratory tests were also conducted during this research to understand the causes of failure.