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De Neef ConchemIndustriepark 8B-2220 Heist-op-den-BergBelgiumTel.: +32 (0)15 24 93 60Fax: +32 (0)15 24 80 72Email: conchem@deneef.eu
De Neef TechnologiesPol. Ind. El PedregarC/ Progrés s/n, nave 908160 MontmelóSpainTel.: +34 (0)93 544 45 54Fax: +34 (0)93 572 39 29Email: info@deneefspain.com
De Neef ChinaUnit 1507, New Commerce Centre19 On Sum StreetShatin • Hong Kong SARChinaTel.: +852 (0)2646 8002/6Fax: +852 (0)2637 7351Email: conchem@deneef.corp.com.hk
De Neef FranceZ.I. du Vert Galant86 Av. du Chateau95310 Saint Ouen L' AumôneFranceTel.: +33 (0)1 3037 5600Fax: +33 (0)1 3037 5601Email: contact@deneef.fr
De Neef ShanghaiSuite 1608G16F Feidiao International Building1065 Zhao Jia Bang Road200030 Shanghai • P.R. ChinaTel.: +86 (0)21 5158 1696Fax: +86 (0)21 5158 1686Email: deneefconchem@163.com
De Neef UKUnit 396-100 Price Street • BirkenheadCH41 3PR WirralUnited KingdomTel.: +44 (0)151 666 1222Fax: +44 (0)151 666 1113Email: enquiries@deneef.co.uk
De Neef Construction Chemicals5610 Brystone Dr. HoustonTexas 77041USATel.: +1 (0)713 8960123Fax: +1 (0)713 8493340Email: info@deneef.com
De Neef (CH) AGLangwiesstrasse 118360 WallenwilSwitzerlandTel.: +41 (0)71 971 46 56Fax: +41 (0)71 971 46 10Email: info@deneef.ch
De Neef NorwayPb. 133, Jellestadveien 33 A1740 BorgenhaugenNorwayTel.: +47 69 10 21 20Fax: +47 69 10 21 21Email: deneef@deneef.no
De Neef ScandinaviaLångavallsgatan 1542 457 GunnilseSwedenTel.: +46 (0)313 30 05 90Fax: +46 (0)313 30 80 41Email: info@deneef.se
De Neef Far East6 Gul Drive629 458 SingaporeSingaporeTel.: +65 (0)6863 1902Tel.: +65 (0)6863 1520Fax: +65 (0)6863 2102Email: deneeffe@singnet.com.sg
De Neef FinlandMelkonkatu 18 A00210 HelsinkiFinlandTel.: +358 (0)9 671 063Fax: +358 (0)9 679 311Email: deneef@deneef.fi
1-component Hydro-Active polyurethane injection resins
Easy to use, environmentally friendly polyurethane injection resins. De Neef’s one-component polyurethane injection resins come in 3 distinct ranges for different applications during tunnelling operations:• Water cutting and water control• Waterproofing of the concrete structure• Consolidation and stabilisation of unstable zones in the drill face area.Requiring simple 1-component injection equipment, De Neef’s 1-component injection resins have adjustable reaction times to allow full adjustability during the application.Several specially developed tunnelling techniques such as Combi-Grouting in rock faces allow time and money to be saved in case of problems during the tunnelling operation.
2-component polyurethane injection resins for Rock Stabilisation
Fast reacting 2-component polyurethane injection resins for void filling, structural void filling, anchoring rock bolts and rock consolidation. Alternative ultra fast reacting resins are available to provide fast waterproofing of large leaks in combination with large voids. Variable reaction times and expansion rates allow the right product to be chosen to solve the problem at hand.2-component resins are fast track solutions when it is impossible for the construction or tunnel operation to wait for cement to cure to sufficient strength.
2-component Organo-mineral injection resinsCFC-free, foaming or non foaming organo-mineral resins are used for fast consolidation and void filling in large areas where low polymerisation temperatures are required. Ideally suited for prevention and repair of collapses in tunnels and in specific mining applications.
Poly-acrylate resins 2-component low viscosity poly-acrylate injection resins are used for waterproofing curtain injections, soil coagulation and repairing leaks in tunnel liners between shotcrete faces in NATM tunnels.
Epoxy injection resins2-component epoxy injection resins for structural injections in concrete tunnel segments or in-situ poured concrete.
Colloidal silicasAdvanced technology alternative for classic waterglass and silicate injection grouts. Colloidal silica grouts have lower overall pH and are less susceptible to syneresis than normal sodium-silicate grouts. Low viscous liquids, colloidal silicate grouts are used for temporary waterproofing soils and areas before the tunnel shield.
De Neef's expertise in tunnelling and underground construction
Distributor
Tunnelling operations, excavation and other underground construction operations quite often run into loose soil, fractured rock, collapse or large water inflows. Even with the best possible preparation and engineering studies, these problems can cause delays or stop the operation all together until a remedial action is found or taken.
Delays caused by collapses or water leaks, push back the other operations, cause lo-gistical problems and need to be solved as soon as possible to allow normal opera-tions to continue.
Although many problems can be solved using standard techniques and cement injections, chemical grouts are sometimes necessary because of the amount and velocity of the inflowing water, permeability of the soil or curing time restriction of the selected mineral grout.
Sleeve port pipes or Tube-à-Manchettes (TAM)
Sleeve port pipes are used in heterogeneous or low permeability soils where full control of the grout injection is required. Sleeve port pipes are available in PVC or steel and have rubber sleeves to cover holes drilled at specific intervals. Different diameters, lengths and materials are available from De Neef as well as the connectors, end caps and blind pipes.
De Neef can supply you with all the knowledge, expertise, equipment and support required for a lasting and success-ful solution to your problem.
De Neef has 35 years experience in manufacturing high grade chemical grouts for waterproofing, water blocking and consolidation of underground constructions and tunnels. The solution however is not only restricted to selecting the correct grout, you also need the equipment, tools and expertise to apply the grout successfully.
The long standing expertise of De Neef in consulting, engineering and application of the selected grout using tech-niques, which have been proven by the large number of references, such as:
• Stabilisation, consolidation and void filling• Pre- and post grouting• Umbrella injections• Combi-Grouting• Water control• Rock bolting
IP 1C-Pro
• 1-component diaphragm pump
• 8 l/min
• 220 bars
IP 1C-HiPo
• 1-component pneu-matic pump
• 24 l/min
• 310 bars
IP 2C-Variflow
• 2-component stainless steel pneu-matic pump with adjustable flow rate and loggers. Suitable for all De Neef 2-component injection grouts.
• 16 l/min
• 160 bars
IP 2C-Highflow
• 2-component 1/1 fixed ratio pump suitable for all De Neef 2-component injection grouts. Skid mounted for easy trans-port and site manipulation.
• 16 l/min
• 240 bars
IP 2C-200-A
• 2-component pneumatic 1/1 fixed ratio stainless steel pump.
• 14 l/min
• 200 bars
De Neef has a large range of injection pumps, packers and accessories available for all injection grouting operations in tunnels and underground constructions.
Combi-Grouting adaptorDrum HandlingEquipment
Screw down packer17 – 25 mm
Inflatable packersBore holes 45 – 150 mm
Mechanical packersBore holes 45 – 120 mm
Anchor packer 38 mmDrill diameter 40 mm
Pumps
Packers and Accessories
Drill rigs and cement grout mixersInstallation of anchors, rock bolts as well as packers and sleeve port pipes requires suitable drill rigs and equipment. De Neef can organise the necessary equipment and supporting personnel on site.
Rock bolts and AnchorsThe main areas of application are:
• Ground support in soft rock• Face stabilization• Fore poling• Slope stabilization• Systematic rock bolting
Strainer Pipes
Strainer pipes are perforated steel pipes used for permeation grouting and consolidation of loose uniform soils. Strainer pipes are available in different diameters and lengths of up to 2 m.Strainer pipes are driven into the soil using a special percussion rig.
Steel anchorsGRP
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