Final Report : learning system for life prediction of infrastructure
CRC Construction Innovation (2007) Final Report : learning system for life prediction of infrastructure. CRC for Construction Innovation, Brisbane , Qld.
The project has further developed two programs for the industry partners related to service
life prediction and salt deposition.
The program for Queensland Department of Main Roads which predicts salt deposition on
different bridge structures at any point in Queensland has been further refined by looking at
more variables. It was found that the height of the bridge significantly affects the salt
deposition levels only when very close to the coast. However the effect of natural cleaning of
salt by rainfall was incorporated into the program. The user interface allows selection of a
location in Queensland, followed by a bridge component. The program then predicts the
annual salt deposition rate and rates the likely severity of the environment.
The service life prediction program for the Queensland Department of Public Works has
been expanded to include 10 common building components, in a variety of environments.
Data mining procedures have been used to develop the program and increase the
usefulness of the application. A Query Based Learning System (QBLS) has been developed
which is based on a data-centric model with extensions to provide support for user
interaction. The program is based on number of sources of information about the service life
of building components. These include the Delphi survey, the CSIRO Holistic model and a
school survey. During the project, the Holistic model was modified for each building
component and databases generated for the locations of all Queensland schools.
Experiments were carried out to verify and provide parameters for the modelling. These
included instrumentation of a downpipe, measurements on pH and chloride levels in leaf
litter, EIS measurements and chromate leaching from Colorbond materials and dose tests to
measure corrosion rates of new materials.
A further database was also generated for inclusion in the program through a large school
survey. Over 30 schools in a range of environments from tropical coastal to temperate inland
were visited and the condition of the building components rated on a scale of 0-5. The data
was analysed and used to calculate an average service life for each component/material
combination in the environments, where sufficient examples were available.
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|Keywords:||CRC for Construction Innovation, Program B : Sustainable Built Assets , Project 2005-2003-B : Learning System for Life Prediction of Infrastructure|
|Divisions:||Current > Research Centres > CRC Construction Innovation|
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|Deposited On:||27 Aug 2009 08:43|
|Last Modified:||09 Jun 2010 23:59|
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