Hydraulic lime Hydraulic lime HL is a general term for varieties of lime calcium oxide , or slaked lime calcium hydroxide , used to make lime mortar which set through hydration.These contrast with varieties of air lime, the other common types of lime mortar, which set through carbonation re absorbing carbon dioxide CO from the air Hydraulic lime provides a faster initial set and higher Natural Hydraulic Lime NHL NHL NHL. NHL Natural hydraulic lime can be used when speed is essential as it sets much quicker than a lime putty mortar Natural hydraulic lime is less flexible and less vapour permeable breathable than a lime The Technology and Use of Hydraulic Lime Professor John Ashurst discusses the technology and use of hydraulic lime, including lime classifications fat , lean , magnesian , feebly hydraulic , moderately hydraulic , eminently hydraulic and natural cements as well as mortars mixes based on hydraulic lime, causes of failure, and the relevant British Standards, and concluding with some comments on the historic performance and Lime mortar Hydraulic lime sets by reaction with water called hydration When a stronger lime mortar is required, such as for external or structural purposes, a pozzolan can be added, which improves its compressive strength and helps to protect it from weathering damage Pozzolans include powdered brick, heat treated clay, silica fume, fly ash, and volcanic materials. Hydraulic Lime Plaster, Ready to Mix, Natural Hydraulic Lime Hydraulic Lime Plaster Base Traditional Plaster Base Coat Coarse hydraulic lime plaster with a rough texture The base plaster is used for scratch coat before the hydraulic lime plaster finish. Hydraulic Lime Mortar, % Natural with English Lime Hydraulic Lime Mortar, % natural with hydraulic lime, best graded sands aggregates Traditional mortar mixes to british standards, suitable for building conservation, restoration, new build, repointing general maintenance of old buildings. The Lime Store Hydraulic Lime, Mortar, Putty Suppliers Welcome to The Lime Store, Dublin We are providers of natural hydraulic limes, lime putties and traditional building tools accessories, used especially for the conservation and restoration of buildings. Concrete Contractor History of Concrete and the The History of Concrete After , years, the legacy of concrete and its impact on the history of mankind is as enduring as the material itself. Lime Mortar Hydraulic Lime Mortar Suppliers Limetec Our Hydraulic lime Mortar offers a variety of benefits over cement based products for listed buildings and new builds, as it provides a higher level of breathability and flexibility which is why conservationist predominantly use it for conservation repairs for English historical landmarks. St.Astier Natural Hydraulic Lime Mortar Plasters and St Astier Natural Hydraulic Limes NHL and derivative products have been produced by the same families since The mineralogical characteristics of the raw materials, the manufacturing process and the quality controls are such that users are assured of the constant performance of the products.