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PIARC (World Road Association), founded in 1909 and comprising 125 member governments from all over the world, is the global forum for exchange of knowledge and experience on roads, road transport policies and practices. With consultative status to the Economic and Social Council of the United Nations, the Association is contributing to a stable and sustainable global development of the road and transport sector.

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All PIARC Publications

There are 32 results for your search

  • 2C - Earthworks Project

    The Booklet 2C, downloadable on this page, covers the earthworks studies and project. This Part of the Manual deals with the different phases of the earthworks project, from the design to the construction of earth-structures. We have chosen to refer to major linear, rail or road infrastructure [...]

    • Date : 2024
    • PIARC Ref. : 2021R02CEN
  • Road Infrastructure And Transportation Security - A PIARC Technical Report

    The management of road assets is becoming increasingly important in the current global context. Design, construction and maintenance are being adapted to improve and guarantee the durability of structures. The resilience of infrastructure to climate change is being sought. The priority objective is [...]

    • Date : 2023
    • PIARC Ref. : 2019R46EN
  • Innovations and Techniques - Application to Earth Structures in the Future - A PIARC technical Report

    As we move further into the 21st century, it is becoming increasingly more clear that climate change is the biggest concern that we must face. The effects of climate change, specifically the increasing frequency and intensity of natural hazards, are wreaking havoc on infrastructure, including earth [...]

    • Date : 2023
    • Pages : 36
    • PIARC Ref. : 2023R36EN
    • ISBN : 978-2-84060-818-9
  • Resilience of Earth Structures - Collection of Case Studies

    This case study compilation tries to give a deeper insight on the topic “Increasing Resilience of Earth Structures to Natural Hazards” assigned to WG1 of PIARC TC 4.3 as part of the 2020-2023 Work Programme. For the production of this report, relevant case studies related to resilience in earth [...]

    • Date : 2022
    • Pages : 110
    • PIARC Ref. : 2022R21EN
    • ISBN : 978-2-84060-707-6
  • Techniques and Innovations in Earthworks - Collection of Case Studies

    This report presents the summary of thirty-six cases studies compiled by Working Group 2 of Technical Committee 4.3 under the theme “Techniques and Innovations in Earthworks“. This document will be further developed as part of the 2020-2023 Work Cycle and is expected to be accompanied by one additional [...]

    • Date : 2022
    • Pages : 92
    • PIARC Ref. : 2022R11EN
    • ISBN : 978-2-84060-686-4
  • Use Of Recycled Materials In Pavements - Briefing Note

    Back in 2003, PIARC published a report from Technical Committee C7/8 on “Pavement Recycling”. This report contains guidelines for in-place recycling with cement, emulsion or foamed bitumen and hot mix recycling in a plant. The current briefing note is the final part of a set of three reports on [...]

    • Date : 2022
    • Pages : 17
    • PIARC Ref. : 2022R10EN
    • ISBN : 978-2-84060-685-7
  • Earthworks Manual - Genesis and Preamble

    PREFACES by Guy RAOUL, Coordinator of the Earthworks Manual. The Earthworks Manual project was launched in 2012 by the Executive Committee of the PIARC Strategic Plan, which entrusted its preparation to Technical Committee 4.4 "Earthworks and unpaved roads". The Earthworks Manual is an important [...]

    • Date : 2021
    • PIARC Ref. : 2021R00EN
    • ISBN : 978-2-84060-634-5
  • Earthworks Manual – General considerations

    The Earthworks Manual is a collection of state of the art and good practice to inform readers about earthworks management. Part 1 is a summary of the different phases and associated topics to be considered in the Earthworks process for the construction of earth-structures. The definitions presented [...]

    • Date : 2021
    • Pages : 44
    • PIARC Ref. : 2021R01EN
    • ISBN : 978-2-84060-637-6
  • Earthworks Manual - Specific technical developments

    The general considerations in Part 1 show in summary the earthworks process and the different phases of construction of earth-structures. The Part 2 develops the specific, transverse technical topics that are most relevant to our field. These topics are dealt with in depth in order to promote the [...]

    • Date : 2021
    • PIARC Ref. : 2021R02EN
    • ISBN : 978-2-84060-641-3
  • Earthworks Manual - Specific technical developments - 2A - Materials

    2A - Materials The optimal utilisation of materials, locally available on the site, of a road project is today a priority, both from an economic objective and an environmental objective contributing to sustainable development. Consequently, the identification and knowledge of the resources that [...]

    • Date : 2021
    • Pages : 5
    • PIARC Ref. : 2021R02AEN
    • ISBN : 978-2-84060-642-0
  • Earthworks Manual - Specific technical developments - 2B - Treatment of materials

    2B - Treatment of materials The Booklet 2B downloadable on this page deals with the treatment of materials. This technique is increasingly carried out to optimize the use of materials under economically advantageous conditions. For Earthworks, the process involves the treatment of natural soils [...]

    • Date : 2021
    • Pages : 159
    • PIARC Ref. : 2021R02BEN
    • ISBN : 978-2-84060-643-7
  • Preserve Earthworks and Rural Roads from the Impact of Climate Changes - Technical Report

    This report puts together good practices on the various regional approaches to the impacts of climate change on roads and little hydraulic works. The subject has already been addressed during previous PIARC cycles but more on the general geotechnical aspect. It includes the definition of the climatic [...]

    • Date : 2020
    • Pages : 134
    • PIARC Ref. : 2020R02EN
    • ISBN : 978-2-84060-626-0
  • Review of Practices Using Marginal and Secondary Materials in Rural and Industrial Areas - Technical Report

    The use of existing materials in road embankments is an essential issue within the Sustainable Development policies, which have been promoted worldwide for many years. In the World Road Association (PIARC) this subject has been investigated by different Technical Committees over the last 20 years. [...]

    • Date : 2019
    • Pages : 90
    • PIARC Ref. : 2019R43EN
    • ISBN : 978-2-84060-595-9
  • Contribution to the improvement of the general guidelines for the development, construction / reconstruction, rehabilitation and maintenance of the Trans-African Highway network - (Annex II) (only in French) - Technical Report

    This report is a review, for the purpose of improvement, of Annex II entitled "General Guidelines for the Planning, Construction/Reconstruction, Rehabilitation and Maintenance of the Transfrician Highway Network" of the African Union Intergovernmental Agreement for the Harmonization of Norms and Standards [...]

    • Date : 2019
    • PIARC Ref. : 2019R06EN
  • Review of the Practical Guide to Pavement Design for Tropical Countries (in French only) - Technical Report

    The Practical Guide to Pavement Design for Tropical Countries, published in 1984 by CEBTP, is still a document to which reference is often made in French-speaking African countries. Over the past thirty-five years, major developments have taken place in the pavement sector, particularly in the formulation [...]

    • Date : 2019
    • PIARC Ref. : 2019R01EN
  • Innovative approaches towards the use of locally available natural marginal materials

    The utilization of materials locally available on the site of a road project is a major concern in the context of sustainable development and perfectly meets the socioeconomic and environmental criteria involved in it. The report is based on the answers received from twenty-two countries. Five different [...]

    • Date : 2013
    • Pages : 176
    • PIARC Ref. : 2012R37EN
    • ISBN : 978-2-84060-307-8
  • Vulnerability of Geotechnical Infrastructure to Climate Change and Adjustment Measures According to the Geographical Context

    The report identifies foreseeable damage and the measures to be taken in a geographical context where climatology and geomorphology are aggregated. Five climate trends are covered: increase of average temperatures; decrease of average precipitation; increase of winter precipitation; increased intensity [...]

    • Date : 2012
    • PIARC Ref. : 2012R04EN
  • Anticipating the impact of climate change on road earthworks

    Climate change and its consequences are one of the main preoccupations of the beginning of the 21 st century. The first part of the report presents, as an example, regional scenarios of the climate evolution for Quebec and Switzerland. The second part focuses on water: lack or excess of water and its [...]

    • Date : 2008
    • Pages : 69
    • PIARC Ref. : 2008R12EN
    • ISBN : 2-84060-212-1
  • Indicators representative of the condition of geotechnical structures for road asset management

    The management of geotechnical assets of road infrastructure is a subject that is rarely investigated. The variability and the difficulty to predict long-term performances pose a challenge for planning maintenance. The report provides an overview of the state of practice. After a description of the [...]

    • Date : 2008
    • Pages : 173
    • PIARC Ref. : 2008R01EN
    • ISBN : 2-84060-201-6
  • Promoting optimal use of local materials

    This document aims to: • identify the progress made over the last decade with respect to soil and/or rock treatments in the area of road earthworks, and more specifically since the publication of PIARC's 1997 report: "Equipment and Methods Specific to Soil Treatment Work"; • look at developments [...]

    • Date : 2007
    • Pages : 83
    • PIARC Ref. : 2007R09EN
    • ISBN : 2-84060-196-6
  • Contribution to Risk Management of Existing Slopes

    C12 decided to extend those studies and adopted the topic risk management of existing slopes during the period 1995-1999 to focus on the utilization of monitoring techniques and database applications. The report summarizes the risk management on existing slopes in technical aspects through the collected [...]

    • Date : 2000
    • Pages : 100
    • PIARC Ref. : 12.11.BEN
    • ISBN : 2-84060-129-X
  • Equipment and Methods Specific to Soil Treatment Works

    To avoid the report on "Field treatment of soils with lime or hydraulic or pozzolanic binders" presented at the XIXth World Road Congress at Marrakech in 1991 (PIARC ref. 19.12.B), being too long, the Technical Committee on Earthworks, Drainage, Subgrade (C12) decided to limit the discussion of equipment [...]

    • Pages : 64
    • PIARC Ref. : 12.05.BEN
    • ISBN : 2-84060-051-X
  • In Situ Assessment of Subgrade Materials

    It is important to be able to forecast the performance of the subgrade, especially its acceptable limits of deformation derived for both the construction stage and during the working life of the pavement. Ten types of in situ test apparatus are described briefly and comparisons made between them, setting [...]

    • Date : 1995
    • Pages : 120
    • PIARC Ref. : 12.01.BEN
    • ISBN : 2-84060-030-7
  • International Symposium on Subdrainage in Roadway Pavements and Subgrades

    Out of print As is common knowledge in the transportation community, proper functioning of roadways is largely dependent on adequate drainage, both at the surface and in the subsurface. The accumulation of excessive water under pavements typically results in a reduced bearing capacity, leading to [...]

    • Date : 2000
    • PIARC Ref. : 12.08.BEN
  • Landslides - Techniques of Evaluating Hazard

    This report discusses current techniques used to evaluate landslide hazard in three stages. Firstly, the landslide hazard of an area is evaluated by collecting existing data, field reconnaissance, etc. At several specified sites along a route, more detailed investigations are then conducted, such [...]

    • Date : 1997
    • Pages : 120
    • PIARC Ref. : 12.04.BEN
    • ISBN : 2-84060-044-7