RESIN AND CEMENT GROUTING SOLUTIONS 1 THE EARTH. UNDER CONTROL.
HIGH PERFORMANCE GROUTING SOLUTIONS Minova is a producer of high performance specialty resins and cementitious products consisting of a broad portfolio of cement or polymer / cement based materials, polyester resins, polyurethane resins, silicate resins, epoxy resins and methacrylate gels. Minova resins and cementitious products provide a comprehensive solution for our far reaching global customers. Challenging geological conditions, varying construction materials and difficult application needs differ greatly for our users. The range of products developed by Minova addresses project performance needs and application challenges through relevant characteristics viscosity, setting times, strength and expansion. 2
MAXIMUM SAFETY AND SUSTAINABILITY With over 135 years of experience, Minova is a leading global manufacturer and supplier of chemical and mechanical earth control products, adhesives and support equipment. We provide leading edge geotechnical solutions as well as consulting, design and applications expertise for use in the mining, tunnelling, civil construction and structural remediation industries. Minova is an industry innovator and leader both in technology and application expertise. Our product and applications specialists from around the globe provide on-site technical support for your projects no matter the location. With a focus on safety, Minova success comes from customer-connected engineers and chemists who continually innovate and perfect solutions, raising industry standards. Minova specialises in total solutions and vital technologies designed to meet your challenges. We are forward thinking and offer integrated solutions with sustainable results. Anchoring, Rock Bolting and Soil Nailing Concrete Repairs Construction Adhesives Customer Support & Consulting Erosion Control Filling of Cavities / Voids and Backfilling Ground Consolidation Joint Sealing Micropiling and Underpinning Mine Gas Sealing & Ventilation Control Non-potable Water Pipe Repairs Pumps and Ancillaries Slope Stabilization Structural Repair Water Sealing This brochure represents a general overview of the most commonly used solutions for grouting applications that Minova offers. Minova cementitious and resin based grouting applications are widely used in the mining and construction industries around the world. Minova strives to maximise safety and sustainability. Please visit, www.minovaglobal.com for more details. 3
THE WIDEST RANGE OF HIGH TECH CEMENTITIOUS AND RESIN SOLUTIONS Minova offers diverse solutions to meet the challenges of today s miner and construction worker. Grouting in tunnels, geotechnics, mining or structural repairs is common practice for securing structural elements such as rock bolts, anchors or cables. Grouting is also used as a key solution in many other applications, e.g.: cavity filling, curtain grouting and gas/water sealing. Choosing the right material and technology depends on grouting requirements, type of environment and the required distance that the grout needs to be pumped. Minova manufactures a range of specialty grouting products designed to meet project requirements. They are available in various cementitious or resin based options to address any of your grouting needs. Minova offers applications experience in conjunction with a complete offering of cementitious or resin based grouts and equipment. MAIN APPLICATIONS SECTORS Minova services the civil construction and mining industry sectors with focus on providing safe innovative ground support, structural repair, gas/water sealing, stabilisation and consolidation solutions Worldwide. We leverage our global abilities while drawing upon our unique set of regional assets and local skillsets to help customers achieve the most efficient and effective solutions to their problems. THE EARTH. UNDER CONTROL. GEOTECHNICS CEMENTITIOUS AND RESIN GROUTS MINING TUNNELLING STRUCTURAL REPAIRS 4
GROUTING SOLUTIONS Sealing and Water Control Prevents or reduces inflow into underground structures to stop erosion and structural instability. Strengthening Increases the original rock and soil parameters: compressive strength, shear resistance, tensile strength, cohesion. Filling Filling of empty spaces including cavities or over-breaks to control rock movement, annulus grouting, and air dam barriers. Consolidation Consolidation by grouting fills rock mass discontinuities. Reduces the compressibility of the soil matrix in construction applications. 5
OFFERING A PERFECT SOLUTION FOR EVERY APPLICATION The application of resins or cements is determined by the expectation of the final result and project requirements. Parameters to consider: Compressive strength Tensile strength Shear strength Plastic / elastic behaviour (resins can be less brittle than cements) Speed of reaction and curing time Environmental impact (both in production and in usage) Product classification can be split into two main categories Bingham types of liquids (cement based technologies) cement grouts PCM cement + water cement and admixtures ACM PCM + admixtures cement and additives ADCM ACM + additives Newton types of liquids (resin based technologies) epoxy resins EP resin + hardener methacrylate gels AC resin + hardener + catalyst silicate resins OM resin + silicate catalyst polyurethane resins PU resin + polyol catalyst phenolic resins PH resin + catalyst silicate gels SG silicates + aluminates Resins penetrate rocks and soil better than cements, due to their ability to flow further into fissures, cracks and pores. Cement based materials Injection with cement based materials is a standard practice with the benefits including relative ease of application and high modulus of elasticity. Minova offers a range of microfine cements for injection into micro-cracks or for deep sealing, when the injection of regular cements isn t feasible. A characteristic of cement based grouts is their relatively slow reaction times resulting in a greater potential of wash out under certain ground water conditions. Resin based technologies Resin based technologies offer higher penetration rates than cement-based materials. Due to their characteristics of high flexibility and adjustable setting times resins can seal, stabilise, or consolidate cracks and joints. Resins can set instantly when in contact with groundwater or when pumping stops. Quick reaction speeds and high early strengths allow for extreme resistance to pressurised water washout while still being able to seal off inflows under demanding conditions. Resins offer greater ability to absorb energy (flexibility) and can be applied in both hot or near freezing temperatures. 6
DEVELOPED FOR THE TOUGHEST CONDITIONS Partnering with customers to design solutions to the world s most challenging ground control problems is what Minova does. We are renowned for our worldclass products, our ability to be creative and for getting it right. Two notable examples of our abilities are the Ólafsfjörður and Siglufjördur tunnels. Minova resin based technologies were used to manage Iceland s Ólafsfjörður and Siglufjördur tunnel projects. With water conditions of extreme thermal heat to near freezing, high pressure (30+ bar) and large volume flows (600 2500 l / min) the use of injection cements or basic resins was impossible. The right solution was Minova Resins. Polyurethane Resins (PUR) and Silicate Resins were successfully injected and technical support was provided by our experienced engineering and applications team to meet the challenging conditions. We are experts at designing the right solutions to your problems. CREATIVE SOLUTIONS A dam located in the Republic of Karelia (Russia) eroded over time and water leakage was observed with a flow rate of about 50 LPM resulting in wash out. To stop the high-pressure wash out a combination of Minova injection resins plus cement grouts were injected into the same borehole one after the other. Once this resin / cement combination successfully countered the wash out a second resin, with a longer reaction time, was injected to fill the remaining fissures. A pure cement suspension was injected to stop remaining leakage where suitable. Improving underground safety In mining, cements are used for gas sealing in roadside packs and voids. These cements decay and break due to aggressive underground conditions. Minova sealing technologies were developed to improve seal quality and shorten setting times. Using phenolicbased technology, Minova products are ideal for creating seals that are gas tight and resistant to being destroyed by the effects of compression due to convergence. Minova also offers solutions within our portfolio for backfilling, cavity filling and void filling. 7
MINOVA ENCAPSULATED GROUT SOLUTIONS From its beginning, Minova has been driven to invent and improve innovative technologies. These solutions are considered vital and have raised industry standards. Grouting solutions that cater to the most demanding environments. Since 1984, striving to simplify the grouting process, Minova developed an unsurpassed idea and the resulting encapsulated grouts, Lokset and Capcem. Lokset is the innovative resin based grouting capsule. Millions of Lokset capsules have been sold, and continue to be installed to secure bolts around the world for safety and stability. Minova Capcem is a cement capsule also designed for easy handling in bolting applications. Both Lokset and Capcem are now standard industry practice. Special cementitious grouts and resins are used for two primary functions load transfer and corrosion protection of the reinforcement element. Capsule resins and cements in the Lokset range have proven to be more flexible and simpler to use in bolting applications. Minova products help address various application conditions temperature, strength, deformation and speed to set. Installation of Lokset capsules, manually or by automatic bolting machines, are used in coal mining, hard rock mining, tunnelling and geotechnical applications. Because all application conditions are not the same, encapsulated resins may not be suitable. For example, fractured strata with severe fissures and cracks, a pumped grout solution will provide improved encapsulation of the bolt within the hole as well as consolidation of the surrounding rock and soil. 8
MINOVA PUMPABLE GROUT SOLUTIONS We leverage our global technology resources to offer a range of pumpable cement and resin grouts for anchoring applications. Pumpable cement grouts Our cement grouting solutions for rock bolting applications range from standard pumpable grouts to high performance rapid setting high strength grouts. This product range has grown into a diversified and comprehensive group of products for bolting applications in coal mining, hard rock mining, tunnelling and civil construction projects. In addition to anchoring grouts, this product range may be used for general strata injection and consolidation. Our cement anchoring products include materials suitable for all forms of manual and mechanized bolt grouting technologies. Our products are supplied pre-blended and pre-packaged requiring only the addition of water in order to produce high quality grouts. All grouts are formulated with an expansion compensation system and are resistant to shrinkage. Pumpable resins The development by Minova of fast curing two component silicate resins for high strength bonding enables almost instantaneous loading of bolts and cables rather than the traditional 24-hour period that cementitious grouting systems require. Typical applications include grouting of cable bolts, solid steel/gfrp bolts, the Minova Ultra SDA systems or our broader range of anchoring products. Our pumpable resins, when used in conjunction with our Minova Ultra SDA systems, are critical components of the Single-Step Bolting System. Minova is the leader in providing high quality, innovative grout technologies. Pumpable cement grouts Pumpable resins 9
COMPLETING THE SOLUTION Delivery systems and applications knowledge are integral parts of Minova solutions. Minova offers: Application services Consultation services and product expertise Drilling and bolting equipment Grouting accessories and Lokset installation systems Pump & injection solutions Sprayed solutions THE EARTH. UNDER CONTROL. 10
CASE STUDIES SEALING OF MINES, GAS (GLOBAL) Coal mines are susceptible to quantities of methane that leak into the atmosphere halting mining operations due to safety concerns. To prevent this danger seals and stoppings can be made, repaired or replaced with Minova phenolic resin products. Advantages High density phenolic resin products create solid seal protection against gas Low transportation costs due to its high foaming factor Not destroyed by convergence in mines Seals can be injected with additional Minova phenolic resin at any time, to maintain a secure seal against gases Very fast and clean installation SEALING OF TUNNELS, WATER (TURKEY) SEALING OF TUNNELS, WATER (TURKEY) Preserving the integrity of drinking water is the highest priority for any city. Minova participated in ensuring the integrity of the drinking water for the city of Istanbul. The TBM construction required a high performing post-grouting procedure to seal off water inflow between concrete elements. The challenge was to create a durable seal against the in rush of salt water between the concrete elements and the surrounding rock behind the TBM. Specialised drilling was deployed and structural plates were installed and sealed using a double injection of our polyurethane resin creating an immediate long-term seal against leaks. Advantages Easily applied Fast reaction when in contact with water Long-term umbrella protection seal SEALING OF DAMS, WATER (RUSSIA) SEALING OF DAMS, WATER (RUSSIA) Cracks and leaks were observed on a hydro power plant dam in Russia. The water with a constant temperature of 4 C required sealing. Cement was not an option due to the hydraulic pressures and low temperatures. The sealing work was further complicated due to a small diameter access shaft. Specialised drilling for decompression was deployed. Structural plates were installed and sealed using a double injection of Minova polyurethane resin creating a long-term immediate seal against leaks. Advantages Ability to work at or near freezing temperatures Fast reaction when in contact with water Long-term seal 11
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