Dual expansion hydrogen free precision grout
Vetogrout CG511 is composed of Portland cement, special aggregates and shrinkage controlled high performance additives. It is supplied as a dry powder in pre-weighed bags ready to use on site, which requires only addition of clean water to produce cohesive mix. Vetogrout CG511 is a precision grout, non-metallic, chloride and hydrogen free, high strength for grouting & anchoring applications. Vetogrout CG511 can be applied generally in thickness ---
- ASTM C1107/1107M-14 (previously CRD621) as Type C (Dual Expansion).
- ASTM C938-10
- Sampling as per ASTM C943
- ASTM C1741 (Testing of post tensioning tendon grout)
- EN 934: 2012 (testing as per EN480, EN 13395)
- EN BS 6920 elevated temperatures, suitable for contact with potable water.
Vetogrout CG511 supplied in 25 Kg bag. Consumption - 1.9-2.1 Kg/m²/mm thickness.
Original sealed bag of Vetogrout CG511 has a shelf life of 12 months provided it is stored clear of ground in a dry and shaded place.
For best results a mechanically powered grout mixer should be used. When quantities up to 50 kg are used, a slow speed drill fitted with a high shear mixer is suitable. Larger quantities will require a high shear vane mixer. Do not use a colloidal impeller mixer.
To enable the grouting operation to be carried out continuously, it essential that sufficient mixing capacity and labor are available. The use of a grout holding tank with provision to gently agitate the grout may be required.
The selected water content should be accurately measured into the mixer. The total contents of the Vetogrout CG511 bag should be slowly added and continuous mixing should take place for 5 minutes. This will ensure that the grout has a smooth even consistency.
Refer to Vetogrout CG511 Technical Data Sheet for further details about approx. Flow Distance in mm.
At 25ºC place the grout within 20 minutes of mixing to gain full benefit of the expansion process.
Vetogrout CG511 can be placed in thicknesses up to 125 mm in a single pour when used as an under-plate grout. For thicker sections it is necessary to fill out Vetogrout CG511 with well-graded silt free aggregate to minimize heat build-up. Typically a 10 mm aggregate is suitable.
Any bolt pockets must be grouted prior to grouting between the substrate and the base plate.
Continuous grout flow is essential. Sufficient grout must be prepared before starting. The time taken to pour a batch must be regulated to the time to prepare the next one.
On completion of the grouting process, exposed areas should be covered well with polyethylene sheets to prevent evaporation of the water in the mix at least for the first 24 hours, later the grouted area should be cured using clean potable water twice a day for 3 days. Or you can use Vetocure XT425 water based curing compound after placing the grout.
Vetogrout CG511 should be removed from tools and equipment with clean water immediately after use. Cured material can be removed mechanically.
The surface should be sound, clean, free from loose material, grease, laitance, dirt curing compound, etc.
Wet the substrate to achieve a saturated and surface dry condition prior to application of Vetogrout CG511.
Erect hopper system and form-work, make sure that the shuttering is watertight by use of a polyurethane sealant such as Vetofl ex PU780 or a rubber gasket seal. This step is important to insure no cement paste and
water leak from the shuttering. Contact you Saveto’s local representative for more technical information and Saveto’s grouting detailed method statement and CAD details.
It is essential that the base plate is clean and free from oil, grease or scale. Air pressure relief holes should be provided to allow venting of any isolated high spots. If leveling shims are used and are to be removed after the grout has hardened, they should be treated with a thin layer of grease.
Unrestrained Surface Area
Generally the gap width between the perimeter form-work and the plate edge should not exceed 150 mm on the pouring side and 50 mm on the opposite side. It is advisable where practical to have no gap at the flank sides.
Low temperature working
When the air or contact surface temperatures are 5ºC or below on a falling thermometer, warm water (30 - 40ºC) is recommended to accelerate strength development. For ambient temperatures below 10ºC the grout consistency should be flowable and the form-work should be maintained in place for at least 36 hours. Normal precautions for winter working with cementitious materials should then be adopted.
High temperature working
At ambient temperatures above 35ºC the mixed grout should be stored in the shade Cool water (below 20ºC) should be used for mixing the grout. Vetogrout CG511 is alkaline and should not come into contact with skin and eyes. Avoid inhalation of dust during mixing. Gloves, goggles and dust mask should be worn.
Vetogrout CG511 is alkaline and should not come into contact with skin and eyes. Avoid inhalation of dust during mixing. Gloves, goggles and dust mask should be worn. If contact with skin occurs, wash with water. Splashes to eyes should be washed immediately with plenty of clean water and medical advice sought.
Vetogrout CG511 is non-flammable.
Saveto endeavors to ensure that any advice, recommendations, information it may give, is accurate and correct. It cannot accept any liability either directly or indirectly arising from the use of its products, because it has no direct or continuous control over where or how its products are applied, whether or not in accordance with any advice, specification, recommendation or information given by us. Saveto has the right to change any of the specifications mentioned in the Technical data sheets upon its discretion without prior notification.
Hard copies of TDSs are printed once or twice a year, while our technical data sheets are continuously being updated as per R&D improvements and new 3rd party testing; kindly refer to our website for the latest updated TDSs.
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