Fosroc Renderoc Hs Xtra

Product Details

Uses Renderoc HSXtra is suitable for hand and spray application for repairs where high load bearing is required. Typical applications would include, but not be limited to, the following:   Vertical and overhead repairs to restore ‘covercrete'.   General concrete and masonry repairs.   Voids greater than 10 mm deep.   Repairs to honeycombing.   Larger scale repairs where formwork cannot be erected. Advantages Renderoc HSXtra features Dimensional Stability Technology - a new materials technology which controls the rate of drying shrinkage such that, when used correctly: i. The dimensions of the repair remain stable; and thus ii. Eliminating failure, due to shrinkage cracking. This in turn leads to a series of associated benefits:   Cost effective - shrinkage control enables repairs to be completed ‘right first time'.   Enhanced durability – works in tandem with extremely low permeability to prolong effective working life.   Compatibility – aligns performance closer than ever before, to that of host concrete.   User friendly – specifically developed to provide an easy-to-apply product, suitable for local conditions.   Definable performance – positive benefits are easily demonstrated via a single, simple measurement. Description Renderoc HSXtra is a high specification cementitious repair mortar that is reinforced with special fibers for enhanced physical properties. It is supplied as a ready to use blend of dry powders, which requires only the addition of clean water to produce a highly consistent repair mortar suitable for structural concrete and masonry repairs. Renderoc HSXtra may be hand applied or sprayed with suitable equipment, please see application method statement for details. Properties The following typical results were obtained at a water powder ratio of 0.16. Test method Typical results Drying shrinkage to ASTM C157-93 7 days: 28 days: < 300 micro-strain < 500 micro-strain Permeability: (DIN 1048 Part 5) < 5 mm Flexural strength: (BS 6319 Part 3) >13 N/mm2 at 28 days Tensile strength: (BS 6319 Part 7) > 6 N/mm2 at 28 days Compressive strength: (BS 1881 Part 1161 ) > 60 N/mm2 at 7 days > 70 N/mm2 at 28 days Water absorption: (BS 1881 Part 121) < 2% Rapid chloride permeability: (AASHTO 277-93) < 500 columns Note 1: 100 mm cubes, water cured at 25oC. Technical support Fosroc offers a comprehensive range of high performance, high quality products suitable for use within all aspects of the concrete repair and protection industry. In addition, the company offers a technical support package to specifiers, end users and contractors, as well as on-site assistance. Design criteria Dimensional stability Technology is a major step forward in the general compatibility of repair mortar systems with the host concrete, and the control of shrinkage in particular. Attention to the basic design criteria given below should ensure that the full benefits of this technology are gained in use: (i) Recommended limits for a single application are: Minimum applied thickness: 10 mm Overhead sections: up to 50 mm thick Vertical sections: up to 75 mm thick Small pockets or horizontal: up to 100 mm thick Maximum length: up to 3 m