EUROPEAN PRACTICE OF SOLVING ISSUES OF EFFECTIVE FUNCTIONING OF SURFACE DRESSING OF PAVEMENT. СOMPLIANCE OF SURFACE DRESSING CHARACTERISTICS WITH TECHNICAL CONDITIONS OF DSTU EN 12271:2021 (EN 12271:2006, IDT)

Abstract

Introduction. The wearing course of a road pavement is in complicated operational conditions in combination with adverse weather and climatic factors that are characteristic of the country for most of the year. These factors make high demands on the wearing course, in particular arranged by the method of a surface dressing. European practice of solving these issues is based on the provisions of a set of standards that can serve to solve the problems of effective functioning of a surface dressing on roads in Ukraine. Problem statement. The introduction of the requirements of the Association Agreement between Ukraine and the EU [1] into the road sector on a new favorable regime for economic relations, improvement of trade and investment are key factors in economic modernization and sustainable development of the country. European realities indicate that one of the prerequisites for the effective functioning of the road network is, first of all, implementation of modern standards. Actually, in our country there is an urgent need for their updating, in particular for the modern practice of solving the issues for the arrangement of surface dressing of the pavement, especially its design and quality control of work. Therefore, for implementation of the requirements of this Agreement, DerzhdorNDI SE has prepared a comprehensive set of national standards in this area with an identical degree of compliance with European requirements. Purpose. The purpose of the work is to promote the implementation of national standards with an identical degree of compliance with European requirements for the efficient operation of layers, arranged by the method of surface dressing on the roads in Ukraine. In this regard, at the present stage, only those requirements are considered, which are set out in the DSTU EN 12271: 2021 (EN 12271: 2006, IDT) «Surface dressing. Specifications» which is being prepared for publication by the National Standardization Body of Ukraine. The related standards, which are applied as a whole, will be updated and presented after their entry into force in the following parts of the article for the acquaintance of the road community. These standards are: DSTU EN 12272-1:2021 (EN 12272-1:2002, IDT) Surface dressing – Test methods – Part 1: Rate of spread and accuracy of spread of binder and chippings [2]; DSTU EN 12272-2:2020 (EN 12272-2:2003, IDT) Surface dressing – Test methods – Part 2: Visual assessment of defects [3]; DSTU EN 12272-3:2020 (EN 12272-3:2003, IDT) Surface dressing. – Test method – Part 3: Determination of binder aggregate bonding by Vialit plate shock test method [4]. Materials and methods. Analysis of the national standard DSTU EN 12271:2021_ (EN 12271:2006, IDT) Surface dressing – Requirements with identical degree of conformity EN 12271:2006 (version en) Surface dressing – Requirements[5]. Results. The requirements of the national standard for the effective functioning of the surface dressing of roads in Ukraine are considered, further use of which provides an opportunity to improve the performance of works for its arrangement. Conclusion. The implementation of the requirements of the standard will contribute to the establishment of scientifically sound standards for surface dressing. The priority approaches proposed in it regarding requirements, design process and quality control can be approved as modern, requiring application in the road industry. In particular, it is appropriate to introduce requirements for the mandatory arrangement of the test site to confirm surface dressing performance (Type Approval Installation Trial (TAIT)), or measures taking into account the specifics of Factory Production Control (FPC). The use of the requirements of the standard will be facilitated by the development of country regulations or practical recommendations based on regional local conditions, and their implementation in order to create the most relevant areas of effective forms of improving the quality of surface dressing.

Keywords

• road
• construction
• materials