Sheetal Enterprises

Fosroc Renderoc SP40

Shrinkage controlled, polymer modified, fibrereinforced cementitious repair mortar, specificallydesigned for sprayingUsesRenderoc SP40 is suitable for wet spraying and hand applicationin a wide variety of repair applications, and is particularlywell suited to vertical and overhead repairs. Typical applicationswould include, but not be limited to, the following Mass infill to large areas Repairs to irregular profiles Excellent for repairs to fire-damaged concrete Fast track repair programmes, where rapidapplication at high volume is required Single layer, high build applicationsAdvantages Cost effective - shrinkage control enables repairs to becompleted „right first time Very low rebound is an additionalcost benefit Enhanced durability - works in tandem with extremelylow 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 easyto-apply product, suitable for local conditions Definable performance - positive benefits are easilydemonstrated via a single, simple measurementDescriptionRenderoc SP40 is supplied as a single component, ready touse blend of dry powders and fibres which requires only theaddition of clean water to produce a highly consistent, handand spray grade, repair mortar suitable for most structural andload bearing repairs.Technical supportFosroc offers a comprehensive technical support service tospecifiers end users and contractors. Fosroc is also able tooffer on-site technical assistance, an AutoCAD facility anddedicted specification assistance in locations all over the world.PropertiesThe following typical results were obtained at a water:powderratio of 0.18.Test method Typical resultDrying shrinkage to ASTM C 157-9328 days : <1000 microstrainFlexural strength : >7 N/mm2 at 28 days(BS 6319 Pt.3)Tensile strength : >2.5 N/mm2 at 28 days(BS 6319 Pt.7)Compressive strength : >20 Mpa at 1 dayhand application(BS 1881 Pt.1161) : >45 Mpa at 28 days(iterative result, basedupon spray application)Note 1: 70mm cubes, air cured @ 25°C.Design criteriaAttention to the basic design criteria given below should ensurethat the full benefits of this technology are achieved :(i) Recommended limits for a single Spray/Trowel/Handapplication are:Minimum applied thickness : 10 mmOverhead sections : up to 150 mm thick*Vertical sections : up to 200 mm thick*Surface area of a single repair : see ‘Note’NOTE : The restricting factor on surface area will be thepracticality of maintaining a continuous application* built in layers of 10mm(ii) In situations where a substrate/repair barrier is required,or enhanced bond strength/working time is required, or wherethe substrate is likely to be damp (e.g. seawalls, quays etc.),Nitobond EP epoxy bonding agent should be used.(iii) Water addition - between 4.25 & 4.5 litres per 25 kg bagUnder no circumstances should part bags be used or additionalwater be employed. Either of these two actions willadversely affect material performance, automatically invalidatingFosroc???s standard product guarantee.Instructions for useRenderoc SP40 should be mixed and applied in strict accordancewith the Product Method Statement, a copy of which maybe obtained from your nearest Fosroc office.

Patchroc
Medium fast setting concrete patching compound Uses Patchroc has been specially designed to provide a fast set repairing concrete floors and pavements and is particularly useful where traffic must be kept fl owing with minimum down time. Patchroc will be of particular interest to industrial maintenance engineers, transport managers, airport authorities or anywhere that pot holes in concrete cause a hazard to pedestrian and wheeled traffic.Advantages Medium Fast setting - Minimum disruption to traffic Easy to use - Needs only the addition of water. Easy to lay - Very easy to apply & finish Non shrink - Does not crack High adhesion - Use Nitobond AR as primer ensures good bonding to concrete substrates. Durable & Tough surface - Resistant to wear and tear Description Patchroc is supplied as a pre-blended dry powder to which water is added to produce an easily trowell able mortar. Patchroc is a blend of inorganic cements, additives to modify and control the rate of setting and strength gain, with selected hard wearing aggregates. Patchroc does not contain calcium chloride. Patchroc has been designed for the patching of small areas of concrete i.e., individual patches requiring not more than 12.6 litre yield per 25kg bag of Patchroc.The blend of cements eliminates shrinkage with the consequent reduction of stress at the bond line. Long lasting adhesion is ensured by the use of Nitobond AR bonding agent.Technical support A technical advisory service is available for onsite assistance in the use of Fosroc product range. Properties Typical Properties at 300C Working life 10 min Setting time 20 min Traffic Time Vehicular 12 hours Pedestrian 2 hours Compressive strength (N/mm2) at 300C2 Hours : 151 Day : 4028 Days : 55 Mixed density 2.20 g/cc Application instructions Before using any repair material Fosroc recommends that the reason for the failure be diagnosed by a suitably qualified authority.Surface preparation Successful repairs to concrete depend totally on correct surface preparation. Particular care should be taken to ensure all surfaces are completely free of laitance, oil, dust, grease,plaster, paint, corrosion and any other deleterious substances. Laitance should be mechanically removed by high pressure water blasting, grit blasting or a combination of both. Oil and grease deposits, should be removed by steam cleaning or detergent scrubbing, or with use of a proprietary degreaser. Smooth surface should be mechanically roughened by scrabbling or needle gun to form a good key. All reinforcing steel must be grit blasted to a profile of SA21/2 prior to the application of Nitozinc Primer.Edges of the areas for repair must be saw cut to 12mm to avoid feather edging. Finally the complete area should be blown clean with oil free compressed air. Patchroc may be used from a minimum of 12mm to a maximum of 50mm thick. If the depth of the pot hole is greater than 50mm,individual layers should be scratch keyed and allowed to set fora minimum of 2 hours before priming and placing the next layer.Priming All surfaces must be primed prior to repair. Before priming, the substrate should be thoroughly soaked with clean water and any excess shall be removed from the surface preferably by oil free compressed air. Concrete must be primed with Nitobond AR. Nitobond AR should be scrubbed into the surface of the concrete. Patchroc should be applied to the primed surface as soon as possible after mixing

Renderoc ® RG(L) 

Cost effective, General purpose, non-shrink, cementitious microconcrete Uses For economical repairs to damaged reinforced concrete elements, particularly where access is restricted and where vibration of the placed material is difficult or impossible. Suitable for various structural strengthening measures such as filling honeycombs and cracks. Advantages  Gaseous expansion system compensates for shrinkage and settlement in the plastic state.  Can be pumped or poured into restricted locations.  Highly fluid to allow for placement without vibration.  Pre-packed to overcome site-batched variations.  Low permeability  Economical  Contains no chloride admixture.  Ease of use Description Renderoc RG(L) is supplied as a ready to use blend of dry powder, which requires only the site addition of clean water to produce a free-flowing, non-shrink microconcrete. The material is based on Portland cements, and fillers, and additives which impart controlled expansion characteristics in the plastic state, while minimising water demand. The low water requirement ensures high early strength and long-term durability. For larger repairs, Renderoc RG(L) may be modified by the addition of 5mm to 12mm clean, graded saturated surface dry aggregates at site. For exceptionally large repairs, the local Fosroc office should be consulted. Technical support Fosroc offers a technical support package to specifiers, end users and contractors as well as technical on-site assistance in locations all over the country. Design criteria Renderoc RG(L) can be applied in sections upto 100mm deep. For larger sections, the addition of approved aggregates may be required. This will depend on the specific configuration of the repair location. Consult the local Fosroc office for further information.

Properties The following results were obtained at a water:Powder ratio of 0.19 @ 300 C. Test Typical result at 300 C Compressive strength (N/mm2 ) 1 Day 8 7 Days 25 28 Days 35 Flexural strength 3N/mm2 @ 28 days Young's Modulus 22 kN/mm2 Expansion characteristics Unrestrained expansion 1 to 4%. Pressure to restrain Plastic expansion Approx. 0.004N/mm2. Coefficient of thermal 10 - 12 x 10-6/ 0 C expansion Fresh wet density 2100 - 2200 kg/m3

Specification clauses The fluid micro-concrete microconcrete shall be Renderoc RG(L), a single component, cement-based material to which only the site-addition of Renderoc RG(L), a single component, cement-based material to which only the site-addition of clean water ( and approved graded coarse aggregates where specified) shall be permitted. The repair grout in the flowable consistency should achieve a compressive strength of not less than 8N/mm2 after 24 hours at 300C. Most importantly, the cured micro concrete shall contain no metallic aggregates, or chlorides and shall be shrinkage compensated in the plastic state. The micro concrete shall have a coefficient of thermal expansion similar to that of the host concrete.

Renderoc  RG

General purpose, non-shrink, cementitiousmicro-concreteUsesRenderoc RG is used for repairs to damaged reinforced concreteelements, particularly where access is restricted andwhere vibration of the placed material is diffi cult or impossible.It is suitable for various structural strengthening measuressuch as encasement build-ups, jacketing, piletop encapsulationresin system, etc.Advantages Gaseous expansion system compensates for shrinkageand settlement in the plastic state Can be pumped or poured into restricted locations Highly fl uid to allow for placement without vibration Pre-packed to overcome site-batched variations Rapid strength gain to facilitate early reinstatement High ultimate strengths and low permeability of cured repair Contains no chloride admixture Ensures piletop integrity as part of a waterproofi ng systemDescriptionRenderoc RG is supplied as a ready to use blend of dry powderswhich requires only the site addition of clean water toproduce a free-fl owing non-shrink repair micro concrete. Thematerial is based on Portland cements, graded aggregatesand fi llers, and additives which impart controlled expansioncharacteristics in the plastic state, while minimising water demand.The low water requirement ensures high early strengthand long-term durability.For larger repairs, the mixed Renderoc RG may be modifi ed bythe addition of 5mm to 12mm clean, graded, saturated surfacedry aggregates at site. For exceptionally large repairs, thelocal Fosroc offi ce shall be consulted.Technical supportFosroc offers a technical support package to specifi ers, endusers and contractors as well as technical on-site assistancein locations all over the country.Design criteriaRenderoc RG can be applied in sections upto 100mm deep.For larger sections, the addition of approved aggregates maybe required. This will depend on the specifi c confi guration ofthe repair location. Fosroc offi ce shall be contacted for furtherinformation.PropertiesThe following results were obtained at a water:Powder ratioof 0.16 @ 300C.Test Typical result at 300C Compressivestrength (N/mm2)(Tested on 70.7mm cubes as per BS 4551-80)1D 3D 7D 28D10 30 40 50Tensile strength 2.0N/mm2 @ 28 daysFlexural strength 5N/mm2 @ 28 days(BS4551 - 80)Young’s Modulus 25 kN/mm2Expansion characteristics Unrestrained expansion(ASTM C827 - 1987) 1 to 4%.Pressure to restrainPlastic expansion Approx. 0.004N/mm2.Coeffi cient of thermal 10 - 12 x 10-6 / 0C.expansionThermal conductivity 1.5 W/m0CFire rating Class A1(EN 1504 cl 5.5)Fresh wet density 2100 - 2200 kg/m3(Mixed density @270C)Specifi cation clausesPerformance specifi cationThe fl uid micro-concrete repair material shall be a singlecomponent, cement based, micro-concrete to which only thesite-addition of clean water ( and approved graded coarseaggregates where specifi ed) shall be permitted. The microconcreteshall contain no metallic aggregates, or chlorides andshall be shrinkage compensated in the plastic state. The micro