Product Overview

MC-Nafufill EP is a two-component epoxy repair mortar from MC-Bauchemie combining a liquid epoxy resin system (components A and B) with a specially selected aggregate filler to produce a mortar with mechanical and chemical performance characteristics fundamentally different from and superior to cementitious repair mortars for specific heavy-duty repair applications. The fundamental performance distinction of MC-Nafufill EP versus cementitious repair mortars (such as the MC-Nafufill N or MC-RocTec 45 general-purpose cementitious range) lies in the continuous epoxy polymer matrix that forms the binder of the hardened mortar — a cementitious mortar derives its strength from calcium silicate hydrate (C-S-H) gel formed during cement hydration, which while strong in compression has limited tensile and flexural strength (typically 3 to 6 MPa tensile) and is vulnerable to acid and chemical attack; MC-Nafufill EP derives its strength from a three-dimensionally cross-linked epoxy polymer network with compressive strength above 70 to 80 MPa, tensile strength above 15 to 20 MPa, flexural strength above 30 to 40 MPa, and very high chemical resistance to acids, alkalis, oils, fuels, and most industrial chemicals. These properties are particularly important in three application scenarios: joint edge repair in industrial floors where the mortar must resist the repeated impact and abrasion of hard-wheel forklift traffic at the joint edge without crumbling; structural repair of concrete in chemically aggressive environments where a cementitious repair mortar would deteriorate from chemical attack; and thin-section repair where the mortar must achieve high strength in a 5 to 20 mm repair thickness without the aggregate size limitations that cementitious mortars face at thin depths. Space Arc Engineering supplies MC-Nafufill EP for industrial contractors, structural repair specialists, and production facility maintenance teams in Ghaziabad, Delhi NCR, Noida, and Uttar Pradesh.

Applications

• Industrial floor joint edge repair — repair of deteriorated, spalled, or damaged joint edges in heavy-duty industrial concrete floors (warehouse floors, manufacturing plant floors, logistics centre floors, cold store floors) where hard-wheel forklift traffic causes impact loading at the joint edge; the joint edge is the most vulnerable part of an industrial floor because the forklift wheel transitions from one slab panel to the adjacent panel at the joint, generating a dynamic impact force on the vertical face of the joint edge — over time this impact chips and spalls the concrete at the joint edge, creating a chamfered or rounded edge profile that widens the joint gap and increases the impact force for subsequent vehicle passes; MC-Nafufill EP joint edge repair restores the sharp, 90-degree joint edge profile with a material that has significantly higher abrasion resistance and impact resistance than the original concrete
• Concrete spall and pothole repair in chemically aggressive industrial environments — repair of concrete floor defects (spalls, potholes, honeycombs, surface scaling) in chemical plants, fertiliser plants, battery manufacturing facilities, food processing plants, and pharmaceutical production facilities where the floor concrete is exposed to acids, alkalis, solvents, or other chemicals that would attack a cementitious repair mortar and cause it to re-deteriorate within months; MC-Nafufill EP provides chemical-resistant repair of concrete defects in these environments, restoring the floor surface to a level, traffickable condition with long service life
• Structural concrete repair in exposure classes XA (chemical attack), XD (chloride), and XS (sea water) — repair of concrete structural elements in chemically aggressive exposure environments including water treatment plants, sewage treatment works, industrial effluent channels, coastal structures, and bridge elements where the repaired concrete surface will be in contact with aggressive chemicals or chloride-laden water that would deteriorate a standard cementitious repair mortar; MC-Nafufill EP provides a chemically resistant repair mortar for restoring the structural section and protective cover to reinforcement in these hostile environments
• Thin-section repair of concrete at 5 to 20 mm depth — repair of shallow concrete defects (surface scaling, shallow delamination, wide cracks with loss of material, thin floor topping repairs) at depths of 5 to 20 mm where a standard cementitious repair mortar with 10 mm maximum aggregate size cannot be properly placed in very thin sections; the epoxy mortar formulation with fine aggregate (maximum particle size typically 3 to 4 mm) allows placement in thin sections of 5 to 10 mm minimum depth with full compaction and without the bleed or segregation that occurs with standard cementitious mortars at thin depths
• Anchor-bolt regrouting in chemical plant foundations — regrouting of loose, deteriorated, or incorrectly sized anchor bolts in chemical plant foundations and equipment bases where the original grout has failed from chemical attack or vibration fatigue; MC-Nafufill EP provides a high-strength, chemically resistant anchor bolt grout that bonds the bolt to the foundation concrete with tensile pull-out strength higher than a cementitious grout and with resistance to the chemical environment that caused the original grout to fail

Key Advantages

• Compressive strength above 70 to 80 MPa — higher than C40 to C60 structural concrete — provides the high bearing capacity for joint edge repair under heavy forklift traffic and structural repair under high bearing stress, ensuring the repair mortar does not crush, crumble, or plastically deform under the concentrated wheel loads of heavy industrial fork-lift trucks (2 to 5 tonne axle loads on small-diameter hard nylon or polyurethane wheels)
• High chemical resistance to acids, alkalis, oils, fuels, and most industrial chemicals — the cured epoxy polymer matrix is resistant to a wide range of industrial chemicals at ambient temperature, including dilute mineral acids (pH above 2 to 3), alkalis, petroleum fuels, hydraulic oils, lubricating oils, and many organic solvents; this chemical resistance makes MC-Nafufill EP the correct repair mortar for floor and structural repairs in chemical processing, food manufacturing, and industrial maintenance environments where cementitious repair mortars would re-deteriorate within months from chemical attack
• Strong adhesive bond to concrete substrate — compressive shear bond strength above 15 to 20 MPa to properly prepared concrete — the epoxy binder provides far superior adhesive bond to concrete than cementitious repair mortars (which rely on hydration compatibility bond with typical shear bond 1 to 3 MPa); this high bond strength prevents the repair from debonding under the dynamic impact loading of fork-lift traffic at joint edges — debonding of joint edge repair is the primary failure mode of cementitious joint edge repair products under heavy industrial traffic
• Rapid return-to-service for production facility maintenance — achieves walk-on strength (20 to 25 MPa compressive) within 3 to 6 hours at 20 to 25 degrees Celsius, depending on the hardener grade used; in Indian industrial facilities where production shutdowns are very expensive and must be minimised, the rapid cure of MC-Nafufill EP allows floor joint repairs or spall repairs to be completed during a night shift and the repaired area returned to normal forklift traffic before the next morning production shift begins
• Suitable for thin-section repair at 5 mm minimum depth — the fine aggregate formulation (maximum particle size 3 to 4 mm) allows proper placement and compaction at repair depths of 5 to 10 mm where standard cementitious repair mortars cannot be properly applied; this thin-section capability extends the applications of MC-Nafufill EP to shallow surface defects that would otherwise require complete removal of a larger concrete volume to create a minimum repair depth for a standard cementitious product