Ability of novel consolidants to improve cohesion of carbonate stones: Dependence on pore-shape, aging conditions and treatment procedures

•The novel consolidants analyzed can consolidate aged carbonate stones.•Brushing allow deep penetration of low viscosity consolidants.•Poor consolidation effect in aged marble and over-consolidation in aged limestone.•Consolidation effect can be optimized by managing application procedures.•Aging conditions influence the consolidation outcome in marble and limestone differently.