GP3.a: Product development for testing and monitoring methods
Leaders: Neil John Campbell (IE) & Wille Stenfert Kroese (NL)

Objective: Qualify experimental devices associated to control of early age properties in relation to serviceability (limit bias and scatter, ensure consistency with interpretation and modeling): e.g. for conductivity, ultra-sonicstrength measurement, shrinkage and thermal dilation, restraint-induced stresses and cracking.

GP3.b: Product development for software and design methods
Leader: Jesus Miguel Bairan Garcia (ES)

Objective: Qualify software/associated design and computational methods related to prevention and control of early age cracking.

GP3.c: Development of recommendations and pre-standard methods
Leader: François Toutlemonde (FR) & Terje Kanstad (NO) & Konstantin Kovler (IL)

Objective: Prepare draft (pre-standard) test protocols for determination of concrete characteristics related to serviceability: thermal expansion coefficient, autogenous shrinkage, moisture diffusion coefficient etc.
Prepare pre-standard methodologies compatible with the Eurocode standard format to address thermo-hydro mechanical coupled effects on serviceability, including early age and transient construction phases (curing, temperature development, restraint, viscoelasticity).
Address the various cases of relevant structures, rafts, large industrial facilities, structures with tightness requirements, composite structures with restrained concrete parts, large structures built in successive phases, retrofitting situations etc.

GP3.d: Recommendations, pre-standard documents and associated coordination
Leader: Markus Vill (AT)

Objective: Prepare standard definition of relevant specifications: which parameters? Which threshold values? Classes (benchmarks/calibration)?
Contribute to improvement of the material and execution standards.
Ensure coordination with relevant RILEM and CEN committees.