Fairmate Cemscreed HM ( F) Cementitious Microconcrete, Packaging Size: 25 Kg

Product Details

BENEFITS < Compensates for shrinkage in the plastic stage < Can be pumped or poured into restricted locations < Highly fluid to allow placement without vibration < Prepacked factory controlled to overcome sitebatched variations < Rapid strength gain to facilitate early reinforcement < High ultimate strength and low permeability of cured repair < Does not contain any corrosive chemicals < Ensures high tensile strength < Specially reinforced with polypropylene fibre. < Cost effective. < Enhanced durability. STANDARD COMPLIANCE CEMSCREED HM (F) complies to ASTM C 157-93, BS 6319 Part-3 & 7, BS 1881 Part-116, 121 and DIN 1048 Part-5. USES CEMSCREED HM (F) is used for repairing of column having major loss of section, repairs requiring high fluidity, repairs requiring significant levels of load bearing. DESCRIPTION CEMSCREED HM (F) is supplied as a ready-to-use, blend of dry powders which requires only site addition of water to produce a free flowing, non-shrink repair micro concrete. The materials is based on Portland cement, graded aggregates, fillers and additives which impart controlled expansion characteristics in the plastic stage while minimising water demand. The low water requirement ensures high early strength and long-term durability. For larger repairs, mixed CEMSCREED HM (F) can be modified by the addition of 12 mm clean, graded, saturated, surface dry aggregates at site. PROPERTIES Expansion (unrestrained) : 0.8 - 1.5% by volume Fresh wet density : 2200 kg/m³ The following test results were obtained at different water/powder ratio. APPLICATION Surface Preparation : The unrestrained surface of the repair should be kept to a minimum. Defective concrete surface should be cut back to a sound base. Smooth surface should be mechanically roughed. Corroded reinforcement should be exposed around its full circumference and remove all loose scale and corrosion deposits. Application : Apply one coat of SAFECORE R to the exposed reinforcement. If any discontinuity in the applied film is noticed, one more coat has to be applied. The concrete substrates should be saturated with water, prior to immediate placing. Free water should be removed priming the substrate using FAIRBOND EP, a slow setting epoxy bonding aid, should be applied on dry substrate. Formwork : Formwork should be leak-proof when subjected to hydraulic pressure imposed by the micro concrete. Provision should be made for air vents to prevent air entrapment, drainage outlets for presoaking. Formwork should be coated with SETRELEASE, mould releasing agent prior to fixing. Mixing And Placing : Care should be taken to ensure that CEMSCREED HM (F) is thoroughly mixed in suitably sized drum with a torque (400-500 RPM) rotary drill fitted with a mixing paddle. The addition of graded aggregate where specified should be added after the water and CEMSCREED HM (F) should beproperly mixed. Placing : The mixed material should be placed immediately. If placed by pump, standard concrete pumping should be followed. Curing : Curing should start within 2 hours and minimum curing time should be same as that for concrete (7 days) as a cementitious material. Low Temperature : In cold conditions down to 15 ºC, the use of warm water (up to 30 ºC) is advisable to accelerate strength development.