RonaBond HB25
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RonaBond HB25 Pre-packed lightweight concrete repair mortar FEATURES • • • • • • • high build repair mortar ease of application - up to 75mm prepacked for control and convenience smooth surface finish to receive protective/ decorative coating monolithic adhesion strong - compressive strength >25N/mm² at 28 days just add water RonaBond HB25 is a prepacked mortar used for repairing concrete on vertical and overhead surfaces where ease of application is as important as high strength. It can be applied in relatively thick section to walls and soffits and, depending on the nature of the repair, in layers up to 75mm deep in pocket repairs. RonaBond HB25 is supplied prepacked requiring only the addition of water. The cured mortar bonds well to concrete, steel and other building surfaces. It offers long term performance and protection to structures. Test Data Min / max thickness Compressive strength @ 28 days Tensile strength @ 28 days Flexural strength @ 28 days Density Min / max application temperature Packaging Water addition per pack Yield per pack Coverage per pack Preparation of concrete and steel All concrete identified for removal must be removed back to a suitable substrate which is sound and stable and which will accept the repair mortar. Reinforcing steel in the repair area must be exposed, and concrete cut back along the length of the steel to expose clean uncorroded steel. Loose rust and scale must be removed. Cut around the periphery of spalled areas to a minimum depth Concrete Repair and Coatings Continued on following page... Other Ranges—Resin Bound and Bonded Surfacing, Screeds, Flooring and Bedding, and Waterproofing and Tanking

RonaBond HB25 Pre-packed lightweight concrete repair mortar Instructions for Use of 6mm at 90o to avoid dished edges and feather edged repairs. The concrete must be removed to allow no less that 15mm of repair mortar to be placed around the steel. Corroded steel must be replaced where necessary. All removal of concrete and steel must be carried out in accordance with the specifiers recommendations. When repairing chloride contaminated concrete the method used to prepare and prime surfaces may differ and the Ronacrete Technical Department should be consulted. All surfaces must be cleaned to...

RonaBond HB25 Pre-packed lightweight concrete repair mortar Instructions for Use the mixing and application technique. Application techniques include hand packing the mortar on to the surface; this method allows faster build up and the ability to feel that the mortar has been packed around and behind reinforcing steel. When applying multiple layers to achieve the total depth these can be built up monolithically (wet-on-wet) or after previous layers have firmed up. Keying and priming (with Ronacrete Standard Primer) between hardened layers is necessary to ensure total adhesion through the...

Pre-packed lightweight concrete repair mortar Storage and Shelf Life RonaBond HB25 and Ronacrete Standard Primer should be stored unopened between 10°C and 25°C in dry warehouse conditions and out of direct sunlight. In these conditions shelf life is approximately 9 months. Flex Meadow, Harlow Concrete Repair Bond Strength Test: > 0.8 MPa Dangerous Substances: Refer to Safety Data Sheet The information detailed in this leaflet is liable to modification from time to time in the light of experience and of normal product application, and before using, customers are advised to check with...