CX Inject EP2

CHEMAX EP2 is a solvent free epoxy resin grout designed for grouting of gap widths of 0.25 to 10mm. It is an all liquid system consisting of base and hardener. The components are supplied in the correct mix proportions designed for whole pack mixing on site.

Specification : Where shown on the contract documents, the epoxy grout shall be CHEMAX EP2 supplied by CHEMAX. It shall provide good general chemical resistance, and a 7 day compressive strength of at least 80 N/mm2.

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Advantages
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Excellent Durability

high compressive, flexural and tensile strengths ensure a long working life.

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User friendly

Simple, full pack mixing to ensure that the performance characteristics are achieved.

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Excellent in service performance

Non-shrink capability ensures full surface to surface contact

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Cost Effective

High early strength gain promotes minimum downtime and early commissioning of plant.

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Versatile

Suitable for a wide range of loading situations including repetitive dynamic loads.

Properties
  • Pot life : 50 min. @ 270C
  • Density : approx. 1050 kg/m3
  • Tensile strength : 20 N/mm2 @ 7 days
  • Flexural strength : 40 N/mm2 @ 7 days
  • Compressive strength : 45 N/mm2 @ 1 day 60 N/mm2 @ 3 days 80 N/mm2 @ 7 days
Application

Preparation

  • Underplate Grouting :The unrestrained surface area of the grout must be kept to a minimum. Generally, the gap between the perimeter formwork and the plate edge should not exceed 75 mm on the pouring side and 25 mm on the opposite side. Formwork on the flank sides should be kept tight to the plate edge. Air pressure relief holes should be provided to allow venting of any isolated high spots.
    Formwork : The formwork should be constructed to be leak proof as EP2 Is a free flow grout. This can be achieved by using foam rubber strip or mastic sealant beneath the constructed formwork and between joints. For free flow grout conditions, it is essential to provide a hydrostatic head of grout. To achieve this feeding hopper should be used - please consult your local CHEMAX office for more details.
    Foundation surface : This must be free from oil, grease, or any loosely adherent material. If the concrete surface is defective or has laitance, it must be cut back to a sound base. Bolt holes or fixing pockets must be blown clean of any dirt or debris.
    Base plate : If delay is likely before placing steel base plates, it is recommended that the underside and edges are coated with EPPRIME 25* to prevent rust formation and ensure bonding with the CHEMAX EP2 grout. All metal surfaces should be cleaned to a bright finish in accordance with Swedish Standard SA 2½ or equal. EPPRIME 25 can be applied directly onto newly cleaned steel surfaces even if they are damp.

Instructions for Use

  • Mixing : The entire contents of the hardener can should be poured into the base container and mixed for 2-3 minutes or until uniform color is achieved. Once mixed, the material must be used within the specified pot life (see under Properties). After this time, unused material will have stiffened and should be discarded. Note : Immediately prior to placement, all surfaces must be dry.
  • Placing : Ensure that the grout can be placed within its pot life. Continuous grout flow is essential. Sufficient grout must be available prior to starting and the time taken to pour a batch must be regulated to the time taken to prepare the next one. Pouring should be from one side of the void to eliminate air entrapment. The hydrostatic head must be maintained at all times so that a continuous grout front is achieved.
  • Cleaning : All tools and equipment should be cleaned immediately after use with CHEMCLEAN SOL
  • Hot weather working : Whilst the performance of CHEMAX EP2 at elevated temperatures is assured, application under such conditions can sometimes be difficult. It is therefore suggested that, for temperatures above 350C, the following guidelines are used:
    1) Store unmixed materials in a cool (preferably temperature controlled) environment, avoiding exposure to direct sunlight.
    2) Keep mixing and placing equipment cool, arranging shade protection if necessary. It is especially important to keep cool those surfaces of the equipment which will come into direct contact with the material itself.
    3) Try to eliminate application in the middle of the day, and certainly avoid application in direct sunlight.
    4) Ensure that there are sufficient operatives available to complete application within the material’s pot life.

Estimating

  • Supply : EPGROUT EP10: 1 liter pack
    EPGROUT EP10: 1 liter packs
    CHEMCLEAN Sol: 5 & 10 liter tins
  • Coverage : EPPRIME 25: 5.0 to 6.5 m2/liter
  • Storage :
    When stored in warehouse conditions below 350C, CHEMAX EP2 will have a shelf life of 12 months.

Precautions

  • Health & Safety instructions :
    Some people are sensitive to epoxy resin so gloves and a barrier cream. Work or similar should be used when handling these products. If contact with the resin occurs, it must be removed before it hardens with a resin removing cream. Follow by washing with soap and water. Do not use solvent. The use of goggles is recommended but should accidental eye contamination occur, wash thoroughly with plenty of clean water and seek medical treatment immediately.
  • Fire :
    EPPRIME 25 and CHEMCLEAN Sol are flammable
  • Flash points :
    EPPRIME 25 : 39°C
    CHEMCLEAN Sol : 33°C Grout consistency

Limitations

  • Grouts should not be placed in any unrestrained situation, i.e. base plate plinths, etc. Failure to comply may lead to crack development in the grout.
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