Concrete Masonry

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Clayblock Ireland

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Clayblock Ireland

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Clayblock versus Concrete Masonry

  Concrete Masonry including Dense Concrete Clayblock®
Speed of laying The laying speed of Clayblock® is up to 4 times that of traditional masonry.
Programme benefits 10mm vertical and perpendicular bed joints. Height capability restricted by the need to back up with facing brick and insulation after 1.2m. 1mm beds, no mortar in vertical joints, blocks interlock mechanically. Storey height capability without the need to back up allows the external envelope to be removed from the critical path. Reduced time to a water-tight shell. Quicker availability for finishing trades.
Mortar A material cost to the project. Once the wet bed joints are laid the mortar is slow to set with full strength reached at circa 48hrs. Supplied with blocks free of charge. Circa 95% less water built in. Once applied to the blocks, the bed joint mortar begins to set within 30 minutes. Significant strength is gained after a matter of hours with full strength reached at circa 24 hours
Safety Dense concrete blocks are not designed for single hand handling, weighing up to 19kg. The application of mortar introduces the risk of dermal burns etc. Dense concrete walls with wet mortar beds are not stable when unsupported. Poroton blocks are typically lighter in weight than concrete blocks, with the Clayblock 100 block weighing only 6.4kg. Poroton blocks have rounded ends and no sharp corners. Using the roller to apply the bed joint mortar reduces the risk of skin contact thus reducing dermal burns etc. The walling system is stable and rigid with storey height achievable in a working day
Strength Dense blocks are manufactured to a range of compressive strengths. Core Range compressive strengths typically ≥ 10 N/mm2 hence reduced requirement to keep multiple block types on-site also reducing the risk of the wrong block being used in the wrong location. Reduces storage requirements on tight sites.
Movement joints Typically 3 and 6m centres. Typically 20m centres
Waste Typical industry guidelines suggest 40% waste against mortar and 15% waste against block. Minimum waste on mortar, typically 2% block wastage
Efficiency Dense concrete blocks provide less thermal resistance The blockwork typically has enhanced Psi values.