Pavement technology - ARRB library new items alert en-us Tue, 5 Jun 2012 00:24:17 UTC Inmagic DB/Text WebPublisher Time-dependent structural response of full-depth reclamation http://114.111.144.247/ics-wpd/exec/icswppro.dll?AC=QUERY&TN=inroads&QY=find+RC+=+1205AR246E Mon, 14 May 2012 14:00:00 UTCInnovative pavement rehabilitation techniques, such as in-place recycling, are becoming more prevalent as highway agencies face an ever-increasing list of pavement maintenance needs and declining or stagnant budgets. Full-depth reclamation (FDR) has been shown to be a cost-effective alternative to deep milling and repaving to rehabilitate deteriorated flexible pavements. The results of previous FDR studies that investigated pavement structural capacity through the use of deflection testing suggest that long-term strength gain may be achieved through curing; however, such a strength gain has not been well quantified. This study documented the in situ structural testing, with a falling weight deflectometer, of three FDR projects constructed in 2008. Deflection testing was performed periodically at the project sites in the first 2 years after reclamation. This study showed that an accurate estimation of the final structural capacity of an FDR project may not feasibly be achieved immediately after the project has been completed and that it could vary greatly depending on the stabilizing agent used. If data from early-age testing are used to calculate design parameters for future projects, the parameters may be too conservative and result in the loss of potential cost savings through the use of unnecessary overlay materials. A cost analysis, based on data collected in this study, showed that these potential cost savings could approach $37,000 per lane mile. Further mechanistic-based studies of the time-dependent structural response of FDR materials are recommended. Characterisation of cement-treated crushed rock basecourse for Western Australian roads http://114.111.144.247/ics-wpd/exec/icswppro.dll?AC=QUERY&TN=inroads&QY=find+RC+=+1205AR350E Mon, 14 May 2012 14:00:00 UTCUsing unconfined compressive strength (UCS) to classify cement treated crushed rock is injudicious and does not portray the in-situ behaviour and characteristics of cement treated crushed rock basecourse. This dissertation therefore investigates the characteristics of cement treated crushed rock basecourse for Western Australian roads. This is to determine a better method to quantify the various classification of cement treated basecourse and understand its in-situ behaviour. Subsequently, the result provides encouragement to reintroduce the use of cement treated crushed rocks in Western Australia. Amongst the characteristics investigated are strength, fatigue, shrinkage, durability and erodibility. These characteristics are assessed against varying cement content. The dissertation combines known standard testing methods along with uniquely developed testing methods to establish numerical models for characterising the materials. This includes the application of the four point bending test for fatigue, tube suction test for durability, nitrogen adsorption for shrinkage, and wheel tracking test for erodibility. A finite element model is also created to validate the results for fatigue. This dissertation has improved the understanding of the cement treated crushed rock materials. It proposes a new numerical fatigue model and provides an alternative classification methodology by incorporating the other key characteristics studied by this paper. Test track shows outstanding results for warm mix with 50 per cent RAP http://114.111.144.247/ics-wpd/exec/icswppro.dll?AC=QUERY&TN=inroads&QY=find+RC+=+1205AR112E Mon, 14 May 2012 14:00:00 UTC Use of solar heat-blocking pavement technology for mitigation of urban heat http://114.111.144.247/ics-wpd/exec/icswppro.dll?AC=QUERY&TN=inroads&QY=find+RC+=+1205AR015E Mon, 14 May 2012 14:00:00 UTC Co-location decision tree for enhancing decision-making of pavement maintenance and rehabilitation http://114.111.144.247/ics-wpd/exec/icswppro.dll?AC=QUERY&TN=inroads&QY=find+RC+=+1205AR050E Mon, 14 May 2012 14:00:00 UTC Investigation of thin pavements rutting based on accelerated pavement testing and repeated loading triaxial tests http://114.111.144.247/ics-wpd/exec/icswppro.dll?AC=QUERY&TN=inroads&QY=find+RC+=+1205AR062E Mon, 14 May 2012 14:00:00 UTC Nonlinear mixed-effects model for the evaluation and prediction of pavement deterioration http://114.111.144.247/ics-wpd/exec/icswppro.dll?AC=QUERY&TN=inroads&QY=find+RC+=+1205AR063E Mon, 14 May 2012 14:00:00 UTC Design of optimal perpetual pavement structure http://114.111.144.247/ics-wpd/exec/icswppro.dll?AC=QUERY&TN=inroads&QY=find+RC+=+1205AR064E Mon, 14 May 2012 14:00:00 UTC Comparison of laser-based and sand patch measurements of pavement surface macrotexture http://114.111.144.247/ics-wpd/exec/icswppro.dll?AC=QUERY&TN=inroads&QY=find+RC+=+1205AR065E Mon, 14 May 2012 14:00:00 UTC Use of recycled construction and demolition waste aggregate for road course surfacing http://114.111.144.247/ics-wpd/exec/icswppro.dll?AC=QUERY&TN=inroads&QY=find+RC+=+1205AR066E Mon, 14 May 2012 14:00:00 UTC Scale and condition economies in asset preservation cost functions: case study involving flexible pavement treatments http://114.111.144.247/ics-wpd/exec/icswppro.dll?AC=QUERY&TN=inroads&QY=find+RC+=+1205AR070E Mon, 14 May 2012 14:00:00 UTC Longitudinal road profile spectrum approximation by split straight lines http://114.111.144.247/ics-wpd/exec/icswppro.dll?AC=QUERY&TN=inroads&QY=find+RC+=+1205AR073E Mon, 14 May 2012 14:00:00 UTC Laboratory investigation of open-graded friction-course mixtures containing polymers and cellulose fibers http://114.111.144.247/ics-wpd/exec/icswppro.dll?AC=QUERY&TN=inroads&QY=find+RC+=+1205AR087E Mon, 14 May 2012 14:00:00 UTC Anisotropic viscoelastic properties of undamaged asphalt mixtures http://114.111.144.247/ics-wpd/exec/icswppro.dll?AC=QUERY&TN=inroads&QY=find+RC+=+1205AR088E Mon, 14 May 2012 14:00:00 UTC Mechanical properties of porous asphalt pavement materials with warm mix asphalt and RAP http://114.111.144.247/ics-wpd/exec/icswppro.dll?AC=QUERY&TN=inroads&QY=find+RC+=+1205AR089E Mon, 14 May 2012 14:00:00 UTC Investigation into the structural performance of pervious concrete http://114.111.144.247/ics-wpd/exec/icswppro.dll?AC=QUERY&TN=inroads&QY=find+RC+=+1205AR090E Mon, 14 May 2012 14:00:00 UTC Laboratory study on moisture susceptibility of dense graded mixes http://114.111.144.247/ics-wpd/exec/icswppro.dll?AC=QUERY&TN=inroads&QY=find+RC+=+1205AR091E Mon, 14 May 2012 14:00:00 UTC Coefficient of thermal expansion of concrete: changes to test method will enhance pavement designs http://114.111.144.247/ics-wpd/exec/icswppro.dll?AC=QUERY&TN=inroads&QY=find+RC+=+1205AR107E Mon, 14 May 2012 14:00:00 UTC Comparative evaluation of hot-mix asphalt design methods http://114.111.144.247/ics-wpd/exec/icswppro.dll?AC=QUERY&TN=inroads&QY=find+RC+=+1205AR113E Mon, 14 May 2012 14:00:00 UTC Development of dynamic modulus master curves for hot-mix asphalt with abbreviated testing temperatures http://114.111.144.247/ics-wpd/exec/icswppro.dll?AC=QUERY&TN=inroads&QY=find+RC+=+1205AR114E Mon, 14 May 2012 14:00:00 UTC Variability of in-situ HMA volumetric and mechanistic characteristics using non-destructive test (NDT): case study http://114.111.144.247/ics-wpd/exec/icswppro.dll?AC=QUERY&TN=inroads&QY=find+RC+=+1205AR115E Mon, 14 May 2012 14:00:00 UTC Criteria for using the superpave compactor to design airport HMA mixtures http://114.111.144.247/ics-wpd/exec/icswppro.dll?AC=QUERY&TN=inroads&QY=find+RC+=+1205AR116E Mon, 14 May 2012 14:00:00 UTC Mathematical modelling for solving nonlinear heat diffusion problems of pavement spherical roads in Makkah http://114.111.144.247/ics-wpd/exec/icswppro.dll?AC=QUERY&TN=inroads&QY=find+RC+=+1205AR117E Mon, 14 May 2012 14:00:00 UTC Evaluation of moisture sensitivity of stone matrix asphalt mixtures using polymerised warm mix asphalt technologies http://114.111.144.247/ics-wpd/exec/icswppro.dll?AC=QUERY&TN=inroads&QY=find+RC+=+1205AR118E Mon, 14 May 2012 14:00:00 UTC Effect of temperature on fatigue performance of hot mix asphalt tested under model mobile load simulator http://114.111.144.247/ics-wpd/exec/icswppro.dll?AC=QUERY&TN=inroads&QY=find+RC+=+1205AR119E Mon, 14 May 2012 14:00:00 UTC Characterisation of interface bonding between hot-mix asphalt overlay and concrete pavements: modelling and in-situ response to accelerated loading http://114.111.144.247/ics-wpd/exec/icswppro.dll?AC=QUERY&TN=inroads&QY=find+RC+=+1205AR120E Mon, 14 May 2012 14:00:00 UTC Fuzzy representation of pavement condition for efficient pavement management http://114.111.144.247/ics-wpd/exec/icswppro.dll?AC=QUERY&TN=inroads&QY=find+RC+=+1205AR121E Mon, 14 May 2012 14:00:00 UTC Development of a nonlinear finite element pavement response to load http://114.111.144.247/ics-wpd/exec/icswppro.dll?AC=QUERY&TN=inroads&QY=find+RC+=+1205AR312E Mon, 14 May 2012 14:00:00 UTCThe currently used Austroads linear elastic model does not adequately allow an assessment of the modulus of individual granular bases to be considered in the design process due to the modulus stress-dependency. Whilst some allowance is currently made for the variation in modulus as the stresses change with depth below the surface, i.e. the Austroads sub-layering rules, the variation in granular moduli horizontally cannot be provided for in the current linear elastic model. This limits the ability of the current Austroads model to predict responses and hence performance of thin (less than 150 mm) bituminous surfaced pavements. In addition, improved methods are required to predict the deformation of granular bases. In July 2008, Austroads commissioned the ARRB Group to develop an improved pavement response to load model, tailored for use in the routine design of flexible pavements, including unbound granular pavements and pavements that contain one or more bound layers. The proposed response to load model is based on the finite element method, which allows for modulus stress-dependency in both vertical and horizontal directions, a limitation of the currently used linear elastic model. In addition, the finite element method can simulate a wide variety of nonlinear behaviour such as tension and shear failures, and material damage can all be treated within the finite element framework. The report describes the development of the finite element response to load model tailored for use in routine pavement design.