HyLime

Hylime incorporates a carefully measured amount of air-entraining agent to further enhance its ability to impart excellent water retention and plasticity to mortars. Across the normal range of bricks, sands and climate, when using Hylime, no other workability aids are necessary. Hylime will impart a self-healing characteristic to mortars known as autogenous healing. This characteristic is due to the carbonation process in the setting and hardening of lime. Fine cracks that can appear in the mortar will, if lime is incorporated, expose unreacted calcium hydroxide to the carbon dioxide in the air, thereby allowing reformation of calcium carbonate crystals which ‘grow’ into the cracks. This self-healing of lime-based mortars has long been recognised as important. Other workability agents for mortar do not impart this quality.