The most challenging task of developing highly deformable concrete using highly confined rubberised concrete will be addressed in WP2. The work package will examine experimentally the behaviour of unconfined and confined concrete and develop a range of innovative applications for highly deformable elements.

Key Objectives

To develop rubberised concrete mixes suitable for the manufacturing of durable, high-deformability elements.

To develop high-deformability elements that can be used as energy-dissipating integral structural components.

WP2

Task 2.1: Material Development and Characterisation

Suitable types of reinforcement and modified concrete mixes will be developed and tested to determine their basic physical and mechanical properties and meet the criteria defined in WP1.

Task 2.2: Long-term Performance and Durability testing

The long term performance of the flexural and jacket reinforcements will be assessed using accelerated durability tests based on fib bulletin 40 protocol.

Task 2.3: Constitutive material modelling: Constitutive models to describe short and long-behaviour

A multi-scale constitutive model will be developed to describe short and long-term behaviour of the selected modified concretes for implementation in finite element packages.

Task 2.4: Medium Scale Tests

Medium scale confined column specimens will be manufactured and tested to assess:

  1. short term performance under combined axial and bending load;
  2. long-term creep resistance under sustained axial load;
  3. fatigue resistance to repeated loading.
Task 2.5: Large ScaleTests

Two large columns will be tested in cyclic bending under different axial load conditions to demonstrate their performance in a typical highway bridge application.

Task 2.6: Shake table tests

Two series of shake table tests will be carried out at TU Iasi to examine the seismic performance of large scale specimens and help improve their design.

Task 2.7: Design Guidelines and Examples

Guidelines and examples will be developed to enable practicing engineers to design high-deformability elements using the newly developed solutions. The behaviour of these elements at elevated temperature and in fire, including means of fire protection, will be discussed, and their sustainability credentials and economic benefits will be critically assessed.