GROUT MICRO-J

Micromortar anti-shrinkage rheoplastic, castable, injectable

Code: GRT.0075

Components: 1

Appearance: Powder

An anti-shrinkage, pourable, self-levelling, super-adhesive micro-mortar, based on high-strength cements, super-pozzolanic fillers, polymeric stabilisers and anti-shrinkage agents. Aggregates with a maximum size of 0.35 mm. Ideal for consolidating and reinforcing injections on concrete, masonry and cracked/damaged rock. Anchors and fastens steel bars, pins, brackets and so on, to concrete, masonry and rock.

Linee di appartenenza

Certification obtained and Standards

Products and systems for the protection and repair of concrete structures - Anchoring of reinforcing steel bar

EN 1504-6

Products and systems for the protection and repair of concrete structures - Anchoring of reinforcing steel bar

Products and systems for the protection and repair of concrete structures - Structural and non-structural repair (R4)

EN 1504-3

Products and systems for the protection and repair of concrete structures - Structural and non-structural repair (R4)

Masonry mortars - Masonry mortar for general purposes (G)

EN 998-2

Masonry mortars - Masonry mortar for general purposes (G)

EN 998-2

M80

EN 998-2

General characteristics

maximum-diameter-of-aggregate

Maximum diameter of aggregate: 0.35 mm

pot-life

Pot-life: 60 min

shelf-life

Shelf-life: 12 months

temperature-of-use

Temperature of use: +5 / +35 °C

Technical specifications

Bonding force

> 2.5 N/mm²

Capillary absorption

0.08

Chloride content

0.002 %

Compressive strength after 01 day

> 35 N/mm²

Compressive strength after 07 days

> 65 N/mm²

Compressive strength after 28 days

> 80 N/mm²

Darcy impermeability

10^(-10) cm/s

Density

2250 kg/m³

Flexural strength after 07 days

> 11 N/mm²

Flexural strength after 28 days

> 13 N/mm²

Flexural strength at 01 day

> 8 N/mm²

No bleeding according to UNI 8998

pH

>12 _

Resistance to the extraction of the steel bars with improved adhesion

< 0.6 mm

Static elastic modulus

25000 N/mm²

Available colours

- Gray

Packaging and dimensions

- Bag 25 kg

- Pallet: 50 x (Bag 25 kg)

Consumption

Approximately 1700 kg of GROUT MICRO-J for every cubic metre of mixture to be made.

Use fields

Injections of reinforcement and reinforcement of concrete, masonry, rock works etc. Anchoring and fixing of ties, electrowelded steel mesh, beam ends for construction joints etc. Sealing of post-tensioning sheathing. Creation of filling paddings in the spaces between conduits and excavation holes.

Preparation of supports

Application surfaces should be clean, free of soiling, crumbling and non-adhering parts, dust, etc., conveniently saturated with water until they reach the condition "saturated with dry surface". 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).

Use method

Pour 2/3 of the total mixing water in the concrete mixer, gradually add the product and the remaining water, mixing until a homogeneous lump-free mixture of the desired consistency is obtained. Apply on-site by injection or pouring within 60' from mixing with water.

Application methods

- Pour out

- Injection

- Pump

Tool cleaning

- Water

Permitted supports

- Concrete

- Mixed walls (bricks and stones)

- Stone walls

Warnings, precautions and Ecology

Adopt casting procedures capable of ensuring the absence of discontinuities and air bubbles.

Do not use in the absence of adequate confinement.

Cure the protection and the moist hardening of exposed surfaces.

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