Description

Auramix 359 is a new generation additive with a high water-reducing power without loss of workability or performance. It allows the production of very fluid concretes.

Uses

• Specially designed for the manufacture of shotcrete in plant.
• Very versatile additive, suitable for use in synergy.
• For all types of concrete requiring a normal workability period, high initial strength and high performance.
• For the manufacture of wet sprayed concrete.

Advantages

• High water reducing power.
• Significant improvement of both initial and final mechanical strength.
• Provides a stable and robust concrete avoiding large fluctuations in workability when little water is added.
• Allows the production of extremely fluid concrete for use on site without the need for vibration.

Standards

Auramix 359 complies with UNE-EN 934-2:2010 Tables 3.1. and 3.2. as a high activity water reducer / superplasticiser.

Typical dosage

The optimum dosage of Auramix 359 to achieve specific requirements should be determined by tests using the materials and conditions with which it will be tested in practice.

This dosage can range from 0.30 to 2.0% s.p.c. for synergies with plasticisers, when used alone the dosage will be between 0.5% and 1.5% depending on the type of concrete to be produced. For fluid concrete the average dosage would be approximately 0.8%.

Properties

The following results were obtained at a temperature of 20ºC:

• Appearance: Light brown liquid
• Density: 1,050 ± 0,01 kg/l
• pH: 3 ± 1,0
• Water soluble chloride content (CI-): ≤ 0,10%.
• Alkali content (Na2O equivalent): max. 2% by mass
• Main function: Decrease water content. Increase workability.
• Secondary function: To increase initial and final strengths.

Mode of use

Mix design 

Once the appropriate dosage has been selected, care must be taken to ensure the consistency of the materials used and the mixing and distribution processes.

Compatibility

Auramix 359 is only compatible with superfluidisers from the Fosroc Euco range if the lowest possible w/c ratio is to be maintained. If more than one admixture is used, they should be added to the concrete separately and not mixed together prior to addition. The resulting properties of concrete containing more than one admixture should be checked by pre-testing.

Auramix 359 is suitable for use with all cements complying with RC-08.

Dosing system

The correct amount of Auramix 359 should be measured by means of a suitable dosing system. For best results, the admixture should be added to the concrete in the mixing water or directly into the mixer at the same time as the water.

Contact the Fosroc Euco Technical Department for advice on the appropriate dosing equipment and its installation.

Effects of overdosage

An overdosage of twice the maximum dosage indicated may cause segregation of the concrete as well as additional air entrapment.

Curing

The final characteristics of any structural concrete will depend on good curing practice. It is therefore very important to use a Fosroc Euco Concure curing membrane, water spray or wet burlap.

Clean-up and disposal

Spills of Auracast 353G should be absorbed with sand or earth and transferred to suitable containers. Product residues should be flushed away with a large amount of water. Disposal of the product and packaging is the responsibility of the end user.

Stoccaggio

Auramix 359 ha un periodo di conservazione di 12 mesi se conservato in un luogo asciutto e nei suoi contenitori originali e chiusi ad una temperatura compresa tra 2ºC e 40ºC. Il colore dell'additivo può variare nel tempo, senza influenzare le proprietà dell'additivo.

Precauzioni

Sicurezza e igiene

Auracast 353G non deve essere ingerito o entrare in contatto con la pelle e gli occhi. Indossare guanti e occhiali protettivi. Gli spruzzi sulla pelle devono essere lavati via con acqua. In caso di contatto con gli occhi, sciacquare immediatamente con abbondante acqua e consultare un medico. Se ingerito, consultare immediatamente un medico. Non indurre il vomito.

Per ulteriori informazioni vedere la scheda di sicurezza del materiale.

Fuoco

Auracast 353G non è infiammabile.