Rules for the execution of precast concrete, reinforced concrete and prestressed concrete elements, reference number NE 013-2026

Rules for the execution of precast concrete, reinforced concrete and prestressed concrete elements, reference number NE 013-2026

The draft technical regulation ‘Normative for the execution of precast concrete, reinforced concrete and precompressed concrete elements, indicative NE 013-2026’ concerns the execution of precast concrete, reinforced concrete and pre-compressed concrete products and elements in Romania for buildings and engineering constructions and applies in view of compliance with the specific rules of the regulations and standards in force relating to: the design of concrete, reinforced concrete and pre-compressed concrete elements and structures, concrete component materials and test methods, the production of concrete and test methods of fresh and reinforced concrete, the construction of concrete structures and the assessment of the resistance of concrete in structures. The Rules are structured into 8 chapters, 6 normative annexes and 2 informative annexes. In addition to general provisions on the scope of application, the chapters contain reference documents, terms and definitions, and provisions relating to specifications for the production of prefabricated elements and specifications for prefabricated elements, assessment and verification of constancy of performance. The regulatory annexes contain provisions on requirements for reinforcements, exposure classes, the granulometric composition of aggregates used in concrete preparation, the values for concrete composition limits, the classes for fresh concrete and the strength classes for hardened concrete. The informative annexes include provisions on the assessment of the compressive strength of concrete by applying the maturity method and the application of non-destructive (indirect) methods.

The review process for technical regulation NE 013-2002 took into account the following:
updating and completing reference documents, terms, definitions, symbols and abbreviations,
- concrete component materials and their fields of use depending on the type of concrete, plain, reinforced or prestressed and exposure classes, respectively;
- performance requirements and criteria, testing and conformity assessment methods that have been treated independently but in a uniform manner for concrete component materials, concrete and finished product, precast element;
- introduction of the modern principles of design and assurance of concrete durability regarding the concept of equivalent performance of concrete and the introduction of environmental resistance classes;
— more detailed presentation of the behaviour and realisation of the precompressed concrete elements, including with regard to voltage losses;
— procedures for the treatment of concrete, including thermal treatment,
— assess the compressive resistance of concrete in prefabricated elements by applying the maturity method,
— modalities for the application of indirect methods for the assessment of the compressive resistance of concrete in prefabricated elements;
- detailing how to prepare technical documentation and carry out inspections