A practical French-language guide to selecting and proportioning mortars for construction, repair, and renovation work. The book explains the role of binders, cements, mortars, and concrete, helping readers understand how material choices affect strength, workability, and durability. It offers guidance on preparing reliable mixes, adapting recipes to different tasks, and avoiding common errors in dosing and application. Intended for DIY readers, tradespeople, and anyone undertaking masonry or small building projects, the work focuses on clear, usable information rather than abstract theory alone. Its emphasis on correct material selection and mix balance makes it a useful reference for maintaining structures, repairing surfaces, and approaching hands-on building work with greater confidence.