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Grout 6 HP

Castable, rheoplastic and structural concrete with very high strength

Grout 6 HP is a high-performance castable mortar, equipped with mechanical compressive and bending resistance far superior to normal structural mortars. It is used for repairs, replenishments, strengthening concrete reinforcement and special works in HPC. The special additives contained in the formulation are able to compensate for shrinkage and the development of exceptional rheological characteristics.
Customs code
3824 5090

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    Obtained Certifications and Regulations
    EN 1504-6EN 1504-3
    Lines of belonging
    Linea prodotto Infratech
    Thematic site
    Grout Power
    Features and benefits
    Where it is used
    How to use
    Technical data
    Additional content
    Warnings and precautions
    Related products

    Grout 6 HP

    With very low water-binder ratios, Grout 6 HP makes it possible to achieve compacting and hyperfluid rheologies that favour the movement of the mortar and the perfect filling of reinforced sprays, even with narrow spaces between the bars. The microsilica with pozzolanic activity increases the cohesion of the mixture with typical anti-segregating and anti-run-off effect. The particular fineness of the hydraulic binders contained in the formula promotes adherence to the substrate and the rapid development of very high mechanical resistance, even just 24 hours from casting. With regard to the ANTICORROSIVE and PROTECTIVE FUNCTION ON THE REINFORCEMENT BARS, the main features of Grout 6 HP are: • the mix of high-strength superfine binders, combined with very fine silicas with pozzolanic activities, to render the mortars intrinsically impermeable to water at the end of the hardening process; • The strongly alkaline pH (> 12) protects the reinforcement bars from triggering corrosion; • The negligible breathability of the carbon dioxide ensures hardened mortars with extremely prevalent anti-carbonation characteristics. Overall, these anticorrosive specificities render the classic treatment of reinforcing bar passivation, preparatory to the pouring of castable mortar UNNECESSARY, provided that not too much time passes between the white metal cleaning operations and the castings of pourable mortar, at the risk of new oxidative processes being triggered. Thus, only in the event that long exposure times are foreseen between the bar-cleaning operations and the pouring of castable mortar is it advisable to treat with passivating slurry (Repar Monosteel or Repar Steel), applied by brush and only on the reinforcing bars.

    Fields of application

    On-site castings or pumping carried out for any kind of structural replenishment of reinforced concrete, seismic reinforcement and adjustment, increases in cross-sectional resistance of concrete structures and masonry, anchorages of large-scale machinery, anchoring of port bollards, deep-drawing and reinforcement works, restoration of highly-stressed industrial flooring both from a static and dynamic perspective, restoration of degraded foundations on bridges and viaducts especially whereby necessitating rapid reopening to vehicle traffic, construction of structures designed with HPC (High Performance Concrete) needs.

    Allowed supports
    Mixed walls (bricks and stones)
    Stone walls
    Rusty reinforcement rods
    Preparation of supports

    Application surfaces must be clean, free of dust, contamination, crumbling, inconsistencies, etc., and adequately saturated-surface-dry with water. An adequate roughening of the surfaces by scarifying, sandblasting etc. is always necessary in order to obtain the maximum adhesion values to the substrate. The optimal values are obtained with high pressure hydro-scarification. Bare the irons undergoing disruptive oxidation or deeply oxidized, removing the rust of the exposed irons (by sandblasting or abrasive brushes).

    Mode of use

    Mix the entire content of a bag of Grout 6 HP with effective vertical-axis mixers for at least 6 minutes, initially introducing a slightly reduced amount of water (9% = 2.25 litres/25 kilograms bag) compared to the required total water permitted (10%–12% = 2.5 litres–3.0 litres/25-kilogram bag) whilst mixing for at least 4 minutes. After this mixing time, evaluate the consistency of the mixture and, if necessary, gradually add in the last of the water until achieving the desired workability, without exceeding the limit of 12% (3.0 litres/25-kilogram bag), mixing at high RPM for at least another two minutes. For thick casting sections, it is advisable to add Ghiaietto 6.10 (consult the relevant technical data sheet or ask for more information on the appropriate dosage of Ghiaietto 6.10 from our technical service). Given the self-levelling properties of the product and its self-compacting capacity, paying due attention to the vibration phase is recommended. Excessive zeal in the vibration operation can worsen the aesthetic rendering of the end result. Do not use in the absence of suitable lateral containment. Ensure exposed surfaces are protected and wet-cured. Adopt casting procedures to ensure the absence of voids and discontinuities. Only pour the mortar from one part of the casting perimeter to avoid air pockets.

    Application methods
    Pour out
    Tool cleaning
    Key features
    Max. recommended thickness
    Max. recommended thickness: 20 cm
    Maximum diameter of aggregate
    Maximum diameter of aggregate: 6 mm
    Min. recommended thickness
    Min. recommended thickness: 2.5 cm
    Mix with water
    Mix with water: 10 %
    Pot-life: 10 min
    Shelf-life: 12 months
    Temperature of use
    Temperature of use: +5 / +35 °C
    Technical specifications

    Compressive strength after 1 day
    UNI EN 12190

    > 40 N/mm²

    Compressive strength after 7 days
    UNI EN 12190

    > 75 N/mm²

    Compressive strength after 28 days
    UNI EN 12190

    > 85 N/mm²

    Flexural strength at 1 day
    UNI EN 196/1

    > 6 N/mm²

    Flexural strength after 7 days
    UNI EN 196/1

    > 10 N/mm²

    Flexural strength after 28 days
    UNI EN 196/1

    > 10 N/mm²

    Resistance to carbonatation
    UN EN 13295

    0.5 mm

    Bonding force
    UNI EN 1542

    3 N/mm²

    Capillary absorption
    UNI EN 13057

    < 0.5 kg•h^0.5/m²

    Reaction to fire
    EN 13501-1


    Chloride content
    UNI EN 1015-17

    < 0.01 %

    Water penetration under pressure (5 bar for 72 hours)
    UNI EN 12390-8

    < 5 mm

    UNI EN 1015-6

    2350 kg/m³

    Static elastic modulus
    EN 13412

    32000 N/mm²

    Approximately 20,5 kilograms/square metre of Grout 6 HP per centimetre of thickness to be realised (about 2050 kilograms per cubic metre).

    Available colors
    Packaging and dimensions
    Bag 25 kg
    Pallet: 50 x (Bag 25 kg)
    Storage and conservation
    Store the product in its original packing, in a fresh and dry environment, avoiding frost and direct sunlight.
    Additional content

    The general information, along with any instructions and recommendations for use of this product, including in this data sheet and eventually provided verbally or in writing, correspond to the present state of our scientific and practical knowledge.
    Any technical and performance data reported is the result of laboratory tests conducted in a controlled environment and thus may be subject to modification in relation to the actual conditions of implementation.

    Azichem Srl does not assume any liability arising from inadequate characteristics related to improper use of the product or connected to defects arising from factors or elements unrelated to the quality of the product, including improper storage.
    Those wishing to utilise the product are required to determine prior to use whether or not the same is suitable for the intended use, assuming all consequent responsibility.

    The technical and characteristic details contained in this data sheet shall be updated periodically. For consultation in real time, please visit the website: The date of revision is indicated in the space to the side. The current edition cancels out and replaces any previous version.

    Please note that the user is required to read the latest Safety Data Sheet for this product, containing chemical-physical and toxicological data, risk phrases and other information regarding the safe transport, use and disposal of the product and its packaging. For consultation, please visit:
    It is forbidden to dispose of the product and/or packaging in the environment.
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