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Guidance to Quality Management of Road Construction

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The purpose of this article is to provide the administration and the designers with an effective, workable flow-chart so that the quality of the road is priority number one and that the execution problems are manageable. Based on the experience during most recent jobs COPRO observed interesting evolutions and missing...

Using Evenness Data for the Systematic Application of the Falling Weight Deflectometer on Concrete Roads

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In many countries the Falling Weight Deflectometer (FWD) is used to assess bearing capacity and thereby the structural condition of concrete roads. Due to the fact that the FWD is a stationary measuring system it can be used only for object related assessment of bearing capacity, but not for network-level...

Noise Emission Comparison Between Porous Concrete and Porous Asphalt Road Pavements

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In this investigation the Authors developed a particular grading curve for the manufacture of a porous concrete road pavement and assessed the noise emission due to vehicles tyres rolling belonging to its use. In fact, this innovative superstructure, apart from guaranteeing excellent superficial characteristics from the standpoint of grip and...

Laboratory Studies on Performance of Porous Concrete

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The skid resistance of any surface is an important characteristic for the driving safety point of view. The rain affects the traffic security, because there are splash and sprays effects caused by the truck wheel. This fact contributes to the dynamic hydroplaning effect. In recent years many agencies research’s has...

First Use of Whitetopping in Switzerland

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This document describes the design and construction of the concrete whitetopping repair of a severely distressed pavement of a road section at a regional road intersection. In the past, repair of this road section with asphalt overlays repeatedly failed to withstand the severe shear loading to which the pavement is...

The Surface Picture of Non-Reinforced Concrete Pavements During Its Usable Lifetime as a Decision Basis for Maintenance

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The performance of road surface is the first and main indicator of information of the condition of the road. For some singular damages in-depth analysis is not necessary; for these an instruction for an appropriate maintenance measure is possible. However, by area-wide recurrent or systematic damages causes are important in...

Dutch Design Tool for Jointed and Continuously Reinforced Concrete Road Pavements

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Almost all jointed concrete pavements in the Netherlands, varying from low volume country roads to dual carriage motorways, are designed with the ‘Vencon 1.0’ program. The program needed to be upgraded to the Windows operating system. The upgrade also gave an opportunity to reconsider the design models of the old...

Decision Support Model for Road Pavements Based on Whole Life Costing, Life Cycle Analysis and Multi-Criteria Analysis

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In response to the growing importance of sustainable building, designers, consultants and pavement managers now tend to make more rational decisions than before when comparing the pros and cons of the construction, maintenance and management of various types of road pavements. Asphalt and concrete pavements offer specific advantages that need...

Reclaimed Porous Asphalt Pavement Used as Aggregate in Cement Bound Concrete Pavement

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In the Netherlands reclaimed asphalt pavement is normally used as cold aggregate to produce recycled hot asphalt mixtures. However reclaimed asphalt pavement originating from porous asphalt pavement can not be used in this process. Therefore it would be valuable if these residual aggregates could be used in concrete production. A...

Measurement and Effect of Dowel Bars Alignment in Concrete Pavements

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The precision and applicability of two non-destructive measuring methods for dowel bars alignment: • Ground Penetrating Radar (GPR) and the • Pulse Induction method (PI). was investigated. The project was sponsored by the German Federal Ministry of Transport, Building and Urban Affairs (Bundesministerium für Verkehr, Bau und Stadtentwicklung BMVBS). The...

Concrete Pavements with Geotextile Interlayer in Germany – Measurements and Long Term Behaviour

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Since 2001 the design with an interlayer of geotextiles is a standard structure in the German pavement catalogue RStO 01. Geotextiles shall guarantee uniform, elastic support of the concrete slab, hence reducing stresses due to temperature and moisture gradient, reduce pumping processes and prevent an origination of reflection cracks from...

Research on Frost Damage of Concrete for Pavements with Ordinary Portland Cement and Portland Fly-Ash Cement

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Due to severe freeze thaw salt damage to concrete pavements on military airfields in the Netherlands, the Agency for Infrastructure of the Netherlands Ministry of Defence (DGW&T) decided to prescribe ordinary Portland cement (CEM I 32.5R, coded as PC) with air entrainer. The ENCI (First Dutch Cement Industry) is of...