Alkali-silica reaction (ASR) is among the most common forms of concrete degradation. The reaction leads to expansion and cracking, which can decrease mechanical properties and increase permeability, leading to loss of service life. Confinement is one method to limit the expansion caused by ASR. Ultra-high performance concrete (UHPC) exhibits superior mechanical properties but its use as a repair material for the confinement of ASR-affected concrete elements has not been well-explored. To fill this gap, an ongoing experimental, modeling and monitoring effort is investigating confinement of ASR-damaged unreinforced and reinforced concrete (RC) columns. Laboratory-cast, large-scale rectangular and circular columns were stored an accelerating environment at ~ 32 ℃ and ~ 99%RH, with expansion monitored over time through internal and external strain gages. Once an expansion of ~ 0.1% was reached in some samples and surface-breaking cracks were apparent, repairs were undertaken. This paper describes the application of a continuous 3-inch-thick layer of UHPC around a rectangular RC and a circular unreinforced column. The design was informed by an initial ANSYS finite element analysis (FEA) model. Although this work remains ongoing, this paper presents designs on the concrete mixture design, reinforcement detailing, ASR damage, approach to confinement design, confinement application, and monitoring.