About MC-Bauchemie Konudur 102

Konudur 102 sits inside MC-Bauchemie’s Ombran & Konudur range for underground sewer rehabilitation — a different world from the waterproofing membranes and repair mortars most contractors associate with the brand. It’s a two-component, low-viscosity epoxy resin, unfilled and tinted red for visual identification during mixing, that behaves almost the opposite of a typical structural repair epoxy: at ambient site temperature it stays workable for roughly 16 hours per 30 kg batch at +10°C material temperature, giving a CIPP crew enough time to impregnate an entire liner roll, get it to the manhole, and pull or invert it into the damaged pipe. It only builds real strength once heat is deliberately introduced — a minimum of 60°C, up to 90°C — through hot water circulation, steam, or hot-air/UV rigs, depending on the installation system used.

For India that timing matters as much as the chemistry. Ageing municipal sewer mains and industrial effluent lines running under arterial roads, inside refineries, or through congested market areas can’t always be dug up — permissions, traffic disruption, and utility clashes make open-cut replacement slow and expensive. Konudur 102-impregnated CIPP liners let a damaged pipe be structurally rehabilitated from a manhole or access pit, with no trenching along the route. That said, this isn’t a shelf item for a general waterproofing contractor — it’s supplied through Space Arc as an authorised MC-Bauchemie channel to trenchless-rehabilitation specialists, CETP/ETP contractors, and robotic-repair crews who already run the mixing, impregnation, and curing equipment the system depends on.

The technical insight

The number worth reading closely on the datasheet is the gap between pot life and cure trigger. Component A (base) runs around 2,600 mPa·s and Component B (hardener) around 200 mPa·s, mixed 8:1 by weight (7.5:1 by volume) into a resin with a density near 1.12 kg/dm³ — low enough to fully wet out a felt sleeve without trapping air. Left at +10°C, a 30 kg batch stays usable for about 16 hours, and an impregnated 3mm sleeve holds its working properties for roughly 24 hours at +20°C. Cure only initiates once the liner is heated to 60-90°C, reaching a flexural strength around 30 N/mm² and E-modulus near 3,300 N/mm² (DIN EN ISO 178), with full chemical and mechanical resistance developing over about 7 days.

Where it is used

• Impregnating polyester-felt CIPP liners for trenchless rehabilitation of industrial and municipal sewer pipes
• Structural relining of damaged underground effluent channels and wastewater collectors without excavation
• Rehabilitating chemically aggressive process-effluent lines in refineries and chemical plants
• Renovating sewer sections beneath arterial roads or congested areas where open-cut digging isn’t practical
• Relining thermally stressed discharge channels carrying hot industrial effluent
• Repairing non-man-entry (non-accessible) small-diameter sewer sections via inversion or pull-in-place liners
• Point-repair and full-length liner work using robotic CIPP installation systems
• Restoring corroded or root-intruded collector pipes feeding CETPs/ETPs

Key advantages

• No-dig installation avoids road cutting, trenching, and the traffic/utility disruption of open-cut pipe replacement
• Long working time at ambient temperature gives crews room to impregnate, transport, and insert long liner sections before cure begins
• Cure only starts on deliberate heat input (60-90°C), so timing is predictable rather than left to ambient conditions
• Low viscosity of both components saturates the felt sleeve fully, reducing dry spots and trapped air
• Bonds well to concrete, brick, and ceramic/vitrified-clay pipe — the substrates most common in Indian sewer construction
• Post-cure mechanical strength (E-modulus ~3,300 N/mm², flexural strength ~30 N/mm²) suits structurally loaded rehabilitation
• Elevated chemical and thermal resistance built for industrial effluent, not just domestic sewage
• Works on dry or moist substrates, useful where a live line can’t be fully dried before lining

Limitations & considerations

• Needs an external heat source (hot water, steam, or a UV/hot-air rig) to cure — not a mix-and-walk-away resin
• Not a material for general civil contractors; correct sleeve selection, impregnation, and installation need trained CIPP crews and dedicated equipment
• Sleeve/felt compatibility should be confirmed with MC-Bauchemie before ordering — a mismatch can affect cure quality and adhesion
• Pot life is strongly temperature-sensitive — roughly a 10°C rise halves the reaction time, so site temperature control matters
• Supplied only as a 30 kg twin-component kit, so batching and quantity planning happens at the mixing-rig stage, not per small repair
• This is a structural lining resin, not a general-purpose adhesive, coating, or grout — its scope stays within CIPP rehabilitation work

Selection & best practice

Specifications

Industry use cases

How we position MC-Bauchemie Konudur 102

Within MC-Bauchemie’s own Ombran & Konudur range, Konudur 102 is the thermo-reactive impregnation resin for CIPP sleeve lining — it sits alongside Konudur Flexfit (the flexible resin seal that connects a cured liner to manholes and shafts) and Konudur Robopox 10 (the ambient-cure epoxy used for robotic point-repairs in non-accessible sewers), so a full trenchless rehabilitation job may draw on more than one Konudur product rather than this one alone. Outside the MC-Bauchemie stable, this is a genuinely narrow niche: mainstream Indian construction-chemical brands, including Fosroc, build their repair and waterproofing ranges around mortars, coatings, and grouts for accessible structures, not thermo-curing resins for trenchless sewer-liner impregnation — so there isn’t a like-for-like Fosroc alternative here. Specifiers comparing options typically look at other CIPP-resin and trenchless-technology suppliers rather than the general construction-chemical majors.

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