ALL IN ONE BENCHTOP MIX
This product excels at both cast-in-place and precast
MACt Premix GFRC (20Kg) is economical, Class A shrinkage compensated glass fibre reinforced concrete for architectural, construction casting and general duty. MACt manufactures MACt Premix at their Queensland Manufacturing Facility. MACt Premix has been designed to be used in any application where Ultra-High-Performance Concrete is needed.
It mixes, pours, flows and fills better than any other high-performance mix on the market.
Its proprietary fibre network provides great tensile strength allowing greater spans and unsupported segments than most other conventional mixes.
The white and light grey base colours provide unlimited design potential.
MACt Premix is a cost-effective, time saving general GFRC concrete with
the following benefits:
Develops high early strength without the use of chlorides
Impressive compressive and flexural strength
It can be dry-packed, rammed, trowelled, poured and pumped or sprayed
Near self-levelling properties means minimal effort in finishing
Can be cast as thin as 20mm for benchtop applications
Quick cure time allows for grinding and polishing 24 hrs later
Works with all stains, integral colours and hardeners
Twin component hydraulic binder glass fibre modified system with additional hydration, flow, defoaming, plasticising and anti-shrink admixtures.
Packed into easy to manage 20 kg bags
The use of a specialized acrylic fibre network and the high flexural strength
greatly limits the chance of cracking.
This highly flowable, near self-levelling mix makes this benchtop mix the perfect choice for both precast and cast-in-place designs and can be cast as thin as 20mm for benchtop applications.
CMB: 0.015 m3
30mm: 0.44 m2
*Typical properties given above are derived from laboratory testing at 23 ±2°C. Compressive strengths were measured using 50mm cube samples to AS 1012.8.3:2015. Variations are to be expected as a result of changing site conditions, weather, quality of preparation, level of expertise during application & curing.
MACt Premix GFRC (20Kg) is a general-purpose Ultra-High-Performance Concrete mix and is supplied ready to use in 20 kg bags. The flow or consistency of the GFRC mix is controlled by the addition of potable water and MACt Plasticiser.
Add all the required water (see below) to a clean bucket, add half of the powder and mix for three minutes with a drill and paddle. Add the second half of the powder with mixing and continue to mix for a further 3 mins until the grout is smooth.
Adding the maximum recommended of 3.0 litres per bag produces a flowing shrinkage compensated GFRC for gap thicknesses from 10 mm up to 100 mm. This also is a low viscosity mix for use as a pumped GFRC concrete.
Adding 2.9 litres produces a sprayable consistency which resists sagging on vertical surfaces.
Adding 2.8 Litres gives a trowel able stiff grout with a consistency sufficient for building up in unsupported structures against vertical and overhanging mouldings
Adding less than 2.6 litres may result in a flash-set grout.
The storage, handling and placement of the MACt Premix must be in strict accordance with the manufacturer’s instructions. A positive volumetric expansion of 1-3% shall occur while the MACt Premix is in a plastic state.
In hot weather for extra work time replace up to 50% water with ice (by weight) or use MACt Hydration Stabiliser (retarder)
MACt Premix GFRC (20Kg) MODIFICATIONS
Modification of MACt Premix GFRC (20Kg) by the addition of accurately weighed pigments may be undertaken. The addition of significant levels of pigment will reduce strength and flow characteristics. To increase flow add 3Ltr of water per bag, and use an additional MACt Plasticiser to achieve the required consistency. Non approved additives shall not be used and can seriously impact the performance of this product.
Mining and Cement Technology offers full technical support and on-site advice to specifiers, end-users and contractors for all of our comprehensive range of high quality, high-performance construction and mining products.
STORAGE & SHELF LIFE
If MACt Premix GFRC (20Kg) is kept in its original packaging in a dry environment, a shelf life of 12 months is to be expected. This time may be reduced if the product is subject to high temperatures or humidity. Bulk bags are expected to remain covered in plastic until use.
MACt Premix GFRC (20Kg) is packaged in 20kg bags or 1.0/1.2 tonne bulk bags.
Other packaging options can be requested.