RobetArme will deliver a human-robot collaborative construction system for the automation of shotcrete (i.e. concrete spray casting), which is an emerging technology in construction domain. A multitasking Inspection-Reconnaissance mobile manipulator-IRR (ROB) will fuse the latest Geotechnical models (BIM/CIM) (DTT), high-density visual data and semantic SLAM (CERTH) representations to automate modelling and fast reconstruction (DTU) of the surface to be shotcreted. IRR will facilitate rebar reinforcement through metal additive manufacturing (ANIMA) capitalizing on its precise repair skills (EPFL). The Shotcrete and Finishing mobile manipulator ?SFR (COBOD) will apply dexterous concrete placement through closed-loop visual guidance methods, suitable for turbid conditions (KUL). Concrete mix-design and study on innovative reinforced cementitious materials (TITAN) will contribute to the reduction of materials? and water waste during shotcrete. The SFR robot equipped with universal tool changing (ROB) will also automate the surface finishing step through delicate and human-like robot manipulations, enabled from a safety operation toolkit that includes physical human-robot collaboration and human-aware navigation (CERTH). A Digital Twin (DTT) coupled with simulation tools (SDU), advanced decision making (ICE) and task planning (CERTH) skills will facilitate fast and greener shotcrete automation. RobetArme will be evaluated (DS4) on four diverse construction sites, i.e. tunnels/culverts (BYCN), bridges posttensioned boxes (ARUP), beams & piles of buildings (CEAS) and ground support walls (BYCN), assessing its autonomous shotcreting abilities. RobetArme will substantially increase the repair/maintenance automation, will foster adoption of robots in Construction 4.0 era (EFF), while it will increase construction productivity providing flexibility to the maintenance personnel, contribution to standards (UNI) and better quality to their workplaces (MORE).