Fosroc Renderoc S2 For Structural Repairs

Product Details

For the reinstatement of concrete in small localised patch repairs. Renderoc S2 is alkaline in nature and will protect embedded steel reinforcement. It is specially designed for location where high compressive strengths are required. The mortar is suitable where superior resistance is required to chlorides and carbon dioxide. Advantages  High strength  Can be applied by hand, like conventional mortars   Extremely low permeability provides maximum protection against carbon dioxide and chlorides  Excellent bond to the concrete substrate  Shrinkage compensated  No site batching required, supplied in pre-weighed prepacked condition   Only addition of water at site to be made while mixing the powder and liquid parts ??? Contains no chlorides. Description Renderoc S2 is supplied as a grey powder along with a liquid polymer and has to be mixed with water on site to produce a highly consistent, high strength repair mortar. The material is based on carefully blended cement, graded fi llers and chemical additives and is polymer modifi ed to provide a mortar with good handling characteristics, while minimising water demand. The hardened product exhibits excellent thermal compatibility with concrete and outstanding water requirement ensures fast strength gain and long-term durability. Technical support Berger Fosroc off ers a technical support package to specifi ers, end users and contractors as well as on-site technical assistance in locations all over the country. Design criteria Renderoc S2 is designed for vertical or horizontal applications. It can be applied from a minimum of 5mm to 15mm thickness in vertical sections. Higher thicknesses can be achieved by the use of formwork. Thicker sections can be built up in layers. In horizontal locations Renderoc S2 can be applied up to 50mm thickness. The material should not be applied at less than 5mm thickness. Consult Berger Fosroc for further information. Properties The following results were obtained at a Water:Powder ratio of 0.13 and temperature @ 270C. Compressive strength 1 Day 12 N/mm2 28 Days 45 N/mm2 Flexural strength 28 days 8 N/mm2 Percentage water absorption (immersion test ) after 24 hrs 0.45 Chloride ion diff usion (Accelerated electrochemical chloride ion diff usion test ) in mg/litre After 24 hours Nil Depth of carbonation,mm ( Accelerated carbonation test) 2 hours Nil 4 hours Nil Coeffi cient of thermal expansion 7 to 12 x 10-6 / 0C Setting time Initial set 3 hrs 15 mins Final set 4 hrs 30 mins Fresh wet density Approx 2100 kg/m3 (varies depending on actual consistency) Chemical resistance The low permeability of Renderoc S2 severely retards chemical attack in aggressive environment. The cured mortar is highly impermeable to acidic gases, chloride ions, oxygen and water.