Boydur M12 specifications for MMA repair mortar in an industrial environment

Boydur M12 Specifications · MMA Repair MortarTechnical confidence. Operational speed.

Boydur M12 specifications: the essential performance, application and handling information for specifying this rapid-curing, two-component MMA repair, anchoring and heavy-duty mortar.

Two-component MMAPremeasured 18 kg set (3 kg A + 15 kg B)
Repair · anchoring · toppingMinimum 5 mm application
Indoor + outdoorSolvent-free reactive system
ISO 9001 + 14001Boytorun manufacturing systems

Technical data overview

Boydur M12 specifications in one clear view.

Boydur M12 is a solvent-free, two-component reactive MMA mortar system for rapid repair, anchoring, filling and heavy-duty applications on concrete and mineral substrates. Component A is a reactive MMA resin; component B is a dry blend of mineral fillers and hardener.

01Mechanical properties

Typical compressive strength≈34 N/mm²
Typical flexural strength≈24 N/mm²
Typical elastic modulus≈4,350 N/mm²
Surface hardnessShore D 75–80
Adhesion (pull-off)≈3.9 N/mm²

02Durability test results

Abrasion resistanceTS 8103 / EN ISO 5470-1≈205 mg
Capillary water absorptionTS EN 1062-3≈0.004 kg/m²·h
Impact resistanceTS EN ISO 6272-1Class III

03Physical profile

ChemistryMethyl methacrylate · MMA
SystemTwo component, solvent-free
Typical density≈2,000 kg/m³
Standard colourConcrete grey
Minimum application thickness5 mm
Intended environmentIndoor / outdoor

04Working and curing

Typical working time (pot life) at 20°C≈25 minutes
Typical return to service at 20°C≈60 minutes
Application temperature−10°C to +40°C
Service temperature−40°C to +60°C

05Packaging and storage

Pack size18 kg set
Component configuration3 kg A (resin) + 15 kg B (powder)
Shelf life12 months
StorageCool, dry, well-ventilated; original unopened packaging

Important: Values are typical/nominal and may vary with site conditions, surface condition, temperature, mixing method and application thickness. The current approved Technical Data Sheet, Safety Data Sheet and package instructions take precedence over this webpage. Site trials and, where required, laboratory verification are recommended for critical projects.

Temperature capability

A wider maintenance window across the year.

Boydur M12 may be applied from −10°C to +40°C. At around 20°C the area can return to service in approximately 60 minutes; at lower temperatures this time is extended.

Cold conditionsCuring slows and return-to-service time is extended; plan the intervention using current TDS guidance.
Warm conditionsReaction accelerates and the ≈25-minute working time shortens; organise labour, tools and placement before mixing.

System suitability

Repair, anchoring and filling. One rapid MMA platform.

Suitability depends on substrate strength, preparation, geometry, exposure and required reopening time. Technical review is recommended for critical work.

01 / REPAIR

Surface and edge repair

Potholes, cracks and local damage in concrete floors, plus repair of broken joint edges and corners.

02 / ANCHORING

Machinery and equipment anchoring

Machine foundations and equipment anchoring, subject to geometry and engineering requirements.

03 / FILLING

Covers, gratings and profiles

Filling around manhole covers, gratings, profiles and other embedded metal elements.

SUBSTRATE

Concrete and mineral surfaces

For dry, sound, clean and load-bearing concrete and mineral substrates, prepared and primed as specified.

EXPOSURE

Heavy-traffic environments

High early mechanical strength and a water- and weather-resistant system for heavily used areas.

SECTORS

Critical facilities

Airport aprons and service areas, ports, shipyards, logistics sites, factories, warehouses, car parks, ramps, service roads and bridges.

Application protocol

Correct preparation determines the quality of the repair.

01

Prepare the substrate

The surface must be dry, sound, clean and load-bearing. Remove oil, dust, loose particles, laitance and contaminants. Cut back damaged concrete to a sound base and clean or roughen mechanically as required.

02

Prime absorbent surfaces

On absorbent mineral substrates, apply Boydur® A10 or a suitable MMA primer. Do not apply Boydur M12 until the primer has fully cured.

03

Mix the premeasured set

Place the 3 kg A component in a clean, dry container and briefly homogenise. Add the 15 kg B component gradually and mix with a low-speed mixer until a homogeneous, lump-free mortar is obtained.

04

Apply within the working time

Use the mixed material within the approximately 25-minute working time at 20°C. Do not continue using material whose pot life has expired.

05

Place, compact and level

Place the mortar into the repair or anchoring cavity, compact with a trowel and level to the surrounding surface. Apply at a minimum thickness of 5 mm.

06

Return to service

At around 20°C the area can return to service after approximately 60 minutes. At lower temperatures this time is extended.

Common application errors

Four controls that should never be skipped.

01 / MOISTURENever apply to wet or damp surfaces

Application onto wet or damp substrates is one of the most common causes of failure. The surface must be completely dry.

02 / PREPARATIONClean and remove weak concrete

Applying without cleaning, or leaving weak concrete zones in place instead of cutting back to a sound surface, compromises adhesion.

03 / MIXINGComplete A + B mixing within pot life

Incomplete or insufficient mixing of components A and B, or using material after its pot life has expired, affects curing and performance.

04 / THICKNESSRespect the 5 mm minimum

Do not apply below 5 mm. For deeper repairs, aggregate grading or a layered application system may be used.

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Technical FAQ

The most important questions before site work.

Where can I download the full Boydur M12 specifications?

The complete Boydur M12 specifications are in the current Technical Data Sheet (PDF). You can also request the TDS, SDS and brochure by e-mail using the form on this page.

How quickly can the repaired area return to service?

At around 20°C, the area can typically return to service in approximately 60 minutes. At lower temperatures this time is extended.

What is the application temperature range?

The stated application range is −10°C to +40°C, and the service temperature range is −40°C to +60°C.

What are the principal mechanical values?

Typical Boydur M12 specifications include compressive strength of approximately 34 N/mm², flexural strength of approximately 24 N/mm², E-modulus of approximately 4,350 N/mm², Shore D hardness of 75–80 and pull-off adhesion of approximately 3.9 N/mm².

Can Boydur M12 be applied to damp surfaces?

No. The substrate must be dry, sound, clean and load-bearing. Application onto wet or damp surfaces is listed among the most common application errors.

Is a primer required?

On absorbent mineral substrates, Boydur® A10 or a suitable MMA primer should be applied, and Boydur M12 should only be placed once the primer has fully cured.

What is the minimum and maximum thickness?

The minimum application thickness is 5 mm. For deeper repairs, aggregate grading or a layered application system may be used; a fixed maximum single-layer thickness is not published because it depends on aggregate distribution and site temperature.

How is Boydur M12 supplied and stored?

It is supplied as an 18 kg set: 3 kg A component (reactive MMA resin) and 15 kg B component (mineral filler and hardener). Store in original unopened packaging in a dry, cool and well-ventilated place. The recommended shelf life is 12 months.

Project-specific support

Send the site conditions—not only the square metres.

For a meaningful review, include substrate, repair dimensions, temperature, traffic, exposure and required reopening time.