Key benefits
- Stabilises and repairs cracked concrete structures
- Penetrates deep within even hard-to-reach cracks
How it works
Concrete Solutions® offers a range of Expoxy Resin, Polyurethane and Gel Injection Systems by MC Bauchemie to address cracks and crevices in various concrete structures.
An initial assessment will be required to determine the most suitable product for the task ahead.
MC-Duromer Epoxy Resin
Structural epoxy resin injection can be challenging. Serious consideration must be given to maintain that the structural integrity of a structure is met.
Of consideration are the crack’s width and depth as well as the concrete’s strength and environmental conditions. Therefore it is important that the viscosity of the injection material used is able to penetrate the crack’s width and full depth. Equally if the concrete is of a low compressive strength then only low pressure injection with high flowability products can be tolerated.
To overcome all of these challenges Concrete Solutions® uses the latest generation Duromer reactive epoxy resins from MC-Bauchemie, Germany. MC-Injekt 1264 compact and TF with their unique properties is able to penetrate the finest crack width and fill any crack depth.
Key benefits
- Can be injected into both dry and damp cracks
- Hardening under dynamic loads
- Low viscosity epoxy duromer resin
- High penetration activity
- High compressive and tensile strengths
- Changeable viscosity to suit crack size
- REACh assessed including application and water contact
Injection by low pressure
The unique properties of MC-Injekt 1264 TF ensure horizontal filling of cracks even when using only gravity pressure. This, due to the products released surface tension, allows for far deeper penetration than that achieved by epoxy resins of much lower viscosities.
Penetration depths of over 200mm even into the finest of crack widths can be achieved. The injection by low pressure technique fulfils the requirements of ZTV-ING Part 3 Solid Construction, Chapter 5 The filling of cracks and cavities in concrete components.
MC-Cement Suspension
The structural injection of Unreinforced Masonry (URM) has provided specifiers with a dilemma of which product to choose. On one hand most conventional injection reactive resins or grouts have too much compressive strength providing little or no movement, restricting the host material from movement. On the other hand low strength repair materials are generally very porous allowing contaminants and also freeze thaw cycles into the substrate causing erosion.
Concrete Solutions® approach to this situation is to inject such cracks and voids with a special cement based material from MC-Bauchemie called Centricrete MS which is uniquely suited to masonry strengthening.
It is important when selecting an injection material for masonry structures that consideration is made to the E-modulus rather than the compressive strength. The low E-modulus of Centricrete MS guarantees that the material will behave soft enough under loads, ensuring that no local stress concentrations will occur so that slight movements can be absorbed by the joints rather than by the much more rigid brick or stone.
Centricrete CS or ultrafine Centricrete UF are available with higher compressive and flexural strengths. They allow for filling of fine cracks and do not change in volume once mixed.
Key benefits
- Low viscosity cement suspension
- No change in volume during setting
- Restores alkalinity
MC-Elastomer Flexible Polyurethane
In 1994 Concrete Solutions® was commissioned by the National Library of New Zealand in Wellington to seal water bearing cracks allowing ingress into basement areas.
Other waterproofing products had proven themselves incapable of either sealing against hydrostatic pressure or dynamic cracking. After considerable research into the problem we finally contacted MC-Bauchemie in Germany who since the 1960’s has been a recognised world leader in injection technology. Their polyurethane injection system MC-Injekt 2033 and MC-Injekt 2300 was used to provide a flexible and permanent seal to the separating cracks within the structure. To this day, nearly two decades later, the same cracks remain sealed.
Since 1994 Concrete Solutions® has successfully sealed hundreds of domestic and commercial projects using the same system throughout New Zealand.
Flexible, MC-Injekt 2300 range
- Flexible sealing of dynamic cracking
- Permanent water seal providing durability for both cracks and construction joints
- Substrate conditions range from dry to pressurised water (with the pre-injection of MC-Injekt 2033)
Key benefits
- Fulfils AS/NZS 4020:2002 for use in contact with drinking water
- Adjustable setting times to suit individual applications
- REACh assessed including long-term water contact
- Very low-viscosity polyurethane-based elastomer resin
MC-Duromer Rigid Polyurethane
The structural filling of voids within or behind a structure can be carried out successfully by using MC-Injekt 2700.
The properties of MC-Inject 2700 allow for accurate setting times which can be adjusted to suit an assortment of applications from the stabilisation of unstable ground, to the fast setting needed to stop high pressure water ingress into civil structures.
The ability to be able to carry out such applications has opened a vast array of civil applications to solve difficult and complex situations.
Rigid MC-Injekt 2700 range
- Stabilisation of ground materials
- Sealing against high pressure water ingress in civil structures such as tunnels, foundation pits and dams
- Stabilisation and waterproofing of construction elements
- Filling cracks and cavities to restore load bearing capacity in structural elements such as columns, beams and slabs
- Stabilising of “rocking” slabs
Key benefits
- Fulfils AS/NZS 4020:2002 for use in contact with drinking water
- Adjustable setting times to suit individual applications
- REACh assessed including long term water contact
- Low viscosity polyurethane-based duromer resin
MC-Hydro structure gel for stabilising of fine media
Structures built on subgrade material that have been subjected to movement by ground settlement, especially those structures constructed on unstable fine media, pose an engineering challenge for their stabilisation.
Our solution is that most materials traditionally used for ground stabilisation have a molecular structure which restricts their penetration into fine media. MC-Injekt TS-07 has been developed using similar hydro structure technology as MC-Injekt GL-95 which has had proven success for over 20 years. The result has been a material with a water like viscosity, that is able to penetrate into voids between fine grains with a tailor made set time.
The products compressive strength fulfils most geotechnical engineering requirements.
Key benefits
Stabilisation of fine media to provide load bearing capabilities.
- Viscosity 5 mPa’s
- 5-7 MPa (injected into ground)
- Reaction time of 1 to 15 minutes at 20°C
- Ground water compatible according to German DIBt and REACh assessed
- Installation requires minimal small equipment
MC-Hydro structure gel for flexible sealing
MC flexible hydro structure gels have proven to be an unequalled asset to resolve waterproofing problems from flowing water ingress to saturated substrates due to ruptured or nonexistent waterproof membranes.
Concrete Solutions® has been able to successfully waterproof numerous leaking structures by injecting behind a structure MC hydro structure gel technology.
Areas of application
- Cracks, joints, and voids in concrete, reinforced concrete, masonry and foundation soil
- Historic brick foundations
- Basement concrete walls and slabs
- Masonry basement walls
- Polystyrene basement walls
- Basement and tunnel construction joints
Key benefits
- Extremely low viscosity of 5 mPa’s
- Highly flexible
- Adjustable setting times to adjust for porous ground or high water flow conditions
- Fulfils AS/NZS 4020:2002 for use in contact with drinking water as well as other international standards.
- REACh assessed
- MC-Injekt GL-95 TX used to seal flexible construction joints
Injection guide and associated products
For the injection guide and associated products, download the information brochure.
Concrete Solutions® was formed in 1994 to carry out specialised applications for the repair, protection and strengthening of building structures.
Concrete Solutions® uses only MC-Pumping Equipment specifically manufactured for the purpose of injecting MC-Injection products.
Concrete Solutions® is an IRP Master Applicator Qualified Company. IRP is a German Government Syllabus issued at the BZB institute in Germany. IRP is the only such official training course in the world that gives certification for a company to carry out concrete Injection, Repair and Protection works.
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